BEGIN:VCALENDAR VERSION:2.0 PRODID:-//HolographyCL - ECPv6.15.20//NONSGML v1.0//EN CALSCALE:GREGORIAN METHOD:PUBLISH X-WR-CALNAME:HolographyCL X-ORIGINAL-URL:https://holography.cl X-WR-CALDESC:Events for HolographyCL REFRESH-INTERVAL;VALUE=DURATION:PT1H X-Robots-Tag:noindex X-PUBLISHED-TTL:PT1H BEGIN:VTIMEZONE TZID:America/Santiago BEGIN:STANDARD TZOFFSETFROM:-0300 TZOFFSETTO:-0400 TZNAME:-04 DTSTART:20210404T030000 END:STANDARD BEGIN:DAYLIGHT TZOFFSETFROM:-0400 TZOFFSETTO:-0300 TZNAME:-03 DTSTART:20210905T040000 END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:-0300 TZOFFSETTO:-0400 TZNAME:-04 DTSTART:20220403T030000 END:STANDARD BEGIN:DAYLIGHT TZOFFSETFROM:-0400 TZOFFSETTO:-0300 TZNAME:-03 DTSTART:20220911T040000 END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:-0300 TZOFFSETTO:-0400 TZNAME:-04 DTSTART:20230402T030000 END:STANDARD BEGIN:DAYLIGHT TZOFFSETFROM:-0400 TZOFFSETTO:-0300 TZNAME:-03 DTSTART:20230903T040000 END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:-0300 TZOFFSETTO:-0400 TZNAME:-04 DTSTART:20240407T030000 END:STANDARD BEGIN:DAYLIGHT TZOFFSETFROM:-0400 TZOFFSETTO:-0300 TZNAME:-03 DTSTART:20240908T040000 END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:-0300 TZOFFSETTO:-0400 TZNAME:-04 DTSTART:20250406T030000 END:STANDARD BEGIN:DAYLIGHT TZOFFSETFROM:-0400 TZOFFSETTO:-0300 TZNAME:-03 DTSTART:20250907T040000 END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:-0300 TZOFFSETTO:-0400 TZNAME:-04 DTSTART:20260405T030000 END:STANDARD BEGIN:DAYLIGHT TZOFFSETFROM:-0400 TZOFFSETTO:-0300 TZNAME:-03 DTSTART:20260906T040000 END:DAYLIGHT END:VTIMEZONE BEGIN:VEVENT DTSTART;VALUE=DATE:20250113 DTEND;VALUE=DATE:20250119 DTSTAMP:20260505T100431 CREATED:20240829T190538Z LAST-MODIFIED:20240829T201201Z UID:7457-1736726400-1737244799@holography.cl SUMMARY:Farewell Meeting HolographyCL DESCRIPTION: URL:http://holography.cl/farewell#new_tab LOCATION:Universidad Adolfo Ibáñez\, Campus Viña del Mar\, Padre Hurtado 750\, Viña del Mar\, Chile CATEGORIES:Events END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Santiago:20241003T145000 DTEND;TZID=America/Santiago:20241015T170000 DTSTAMP:20260505T100431 CREATED:20240930T194424Z LAST-MODIFIED:20241010T194551Z UID:7508-1727967000-1729011600@holography.cl SUMMARY:Lecture Series by Diego Correa: Integrability in Gauge Theories DESCRIPTION:Outline \nIntegrable field theories have applications in various areas of physics\, such as high-energy physics\, condensed matter\, and mathematics. In this introductory 4-class course\, a general overview of the subject will be provided. We will begin with the notion of integrability in classical mechanical systems and field theories\, highlighting its relationship with the existence of conserved charges. Next\, we will explore the consequences of these conserved charges in quantum field theories\, emphasizing integrability’s constraints on the theory’s scattering matrix. We will also discuss integrability in spin chains and their solution through the Bethe Ansatz. Finally\, we will consider how these ideas apply to the study of scaling dimensions in conformal gauge theories in 4 dimensions. \n  \nResources \n \nReferences \n\nDorey\, Patrick. “Exact S-matrices.” Conformal Field Theories and Integrable Models: Lectures Held at the Eötvös Graduate Course\, Budapest\, Hungary\, 13–18 August 1996. Berlin\, Heidelberg: Springer Berlin Heidelberg\, 2007. 85-125.- arXiv \nZ. Bajnok “How Integrability Works (for AdS/CFT)”.-InspireHep\nFaddeev\, L. D. (1996). “How algebraic Bethe ansatz works for integrable model”.- arXiv\n\n  \n  \n  \nRegistrations for this event are closed. \n  URL:https://holography.cl/activity/lecture-series-by-diego-correa-integrability-in-gauge-theories/ LOCATION:Pontificia Universidad Católica de Chile\, Campus San Joaquín\, Santiago\, Chile CATEGORIES:Events ATTACH;FMTTYPE=image/png:https://holography.cl/wp-content/uploads/2024/09/Poster-Diego-Correa-copia.png END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Santiago:20240822T170000 DTEND;TZID=America/Santiago:20240905T183000 DTSTAMP:20260505T100431 CREATED:20240823T200216Z LAST-MODIFIED:20240905T192311Z UID:7444-1724346000-1725561000@holography.cl SUMMARY:Introduction to Carrollian Physics by Dr. David Rivera-Betancour DESCRIPTION:The event will take place the following days: \nThursday 22/08\nLecture 1: classroom 502 from 17:00 to 18:30 hrs. \nThursday 05/09\nLecture 2 and 3: classroom 302 from 17:00 to 18:30 hrs. \nOutline \nThe purpose of this mini-course is to give an introduction to Carrollian dynamics. \nContents \nLecture 1 \n\nCarroll Symmetries\n Carroll geometries:\n\nFrom c → 0 limit\nnull hypersurfaces\n(conformal) isometries\n\n\n\nLecture 2 \n\n Carrollian dynamics:\n\nFrom symmetries\nFrom c → 0 limit\n(non)-conserved Noether currents\n\n\n\nLecture 3 \n\n Some applications in gravity:\n\nBlack hole event horizon dynamics as Carrollian fluids\nHolographic reconstruction of Ricci-flat spacetimes\n\n\n\n  \nReferences \n\nDuval\, C.\, Gibbons\, G. W.\, & Horvathy\, P. A. (2014). Conformal Carroll groups and BMS symmetry. Classical and Quantum Gravity\, 31(9)\, 092001.- arXiv\nCiambelli\, L.\, Marteau\, C.\, Petkou\, A. C.\, Petropoulos\, P. M.\, & Siampos\, K. (2018). Flat holography and Carrollian fluids. Journal of High Energy Physics\, 2018(7)\, 1-46.- arXiv\nCiambelli\, L.\, & Marteau\, C. (2019). Carrollian conservation laws and Ricci-flat gravity. Classical and Quantum Gravity\, 36(8)\, 085004. – arXiv\nDonnay\, L.\, & Marteau\, C. (2019). Carrollian physics at the black hole horizon. Classical and Quantum Gravity\, 36(16)\, 165002.- arXiv\nCiambelli\, L.\, Leigh\, R. G.\, Marteau\, C.\, & Petropoulos\, P. M. (2019). Carroll structures\, null geometry\, and conformal isometries. Physical Review D\, 100(4)\, 046010.- arXiv\nPetkou\, A. C.\, Petropoulos\, P. M.\, Rivera-Betancour\, D.\, & Siampos\, K. (2022). Relativistic fluids\, hydrodynamic frames and their Galilean versus Carrollian avatars. Journal of High Energy Physics\, 2022(9)\, 1-94.- arXiv\nCampoleoni\, A.\, Delfante\, A.\, Pekar\, S.\, Petropoulos\, P. M.\, Rivera-Betancour\, D.\, & Vilatte\, M. (2023). Flat from anti de Sitter. Journal of High Energy Physics\, 2023(12)\, 1-46.- arXiv\n\nResources \n\n Lectures PDF URL:https://holography.cl/activity/introduction-to-carrollian-physics-by-dr-david-rivera-betancour/ LOCATION:Universidad Diego Portales\, Ejercito 441\, Santiago\, Región Metropolitana\, 8150215\, Chile CATEGORIES:Events ATTACH;FMTTYPE=image/jpeg:https://holography.cl/wp-content/uploads/2024/08/Carrollian-David.jpg END:VEVENT BEGIN:VEVENT DTSTART;VALUE=DATE:20240820 DTEND;VALUE=DATE:20240821 DTSTAMP:20260505T100431 CREATED:20240813T194018Z LAST-MODIFIED:20240817T173138Z UID:7430-1724112000-1724198399@holography.cl SUMMARY:Marco Bianchi Universidad San Sebastián DESCRIPTION:We are pleased to announce an upcoming seminar featuring Marco Bianchi from Universidad San Sebastián. Marco has an impressive academic background\, having completed postdoctoral research at institutions such as Humboldt University of Berlin\, Queen Mary University of London\, and the Niels Bohr Institute (NBI). His work focuses on areas such as AdS-CFT Correspondence\, Extended Supersymmetry\, and Integrable Field Theories. \nThe event will take place at Universidad Adolfo Ibáñez\, Sede Errázuriz. Here we leave you the details of the talk \nTitle:\nTwo holographic problems on which help is welcome. \nAbstract:\nIn this talk\, I will present two QFT observables that are theoretically open to a holographic description\, although a complete description has yet to be achieved. First\, the two-point functions of certain protected operators in N=4 SYM\, when computed using dimensional regularization at weak coupling\, exhibit uniform transcendentality. Notably\, the leading term in the regulator can be exactly determined to all orders in perturbation theory\, suggesting a potential for a holographic calculation at strong coupling. Second\, the expectation value of supersymmetric Wilson loops in the ABJM model can be exactly determined through supersymmetric localization\, providing an interpolation between weak and strong coupling. However\, this result includes imaginary contributions\, for which I will present recent progress in interpreting at weak coupling. The holographic interpretation of these contributions remains unresolved. \n  \n  URL:https://holography.cl/activity/marco-bianchi-universidad-san-sebastian/ LOCATION:Universidad Adolfo Ibáñez\, Sede Errázuriz\, Pdte. Errázuriz 3485\, Las Condes\, Santiago\, Chile CATEGORIES:Seminars ATTACH;FMTTYPE=image/png:https://holography.cl/wp-content/uploads/2024/08/poster-Marco-Bianchi-2.png END:VEVENT BEGIN:VEVENT DTSTART;VALUE=DATE:20240522 DTEND;VALUE=DATE:20240523 DTSTAMP:20260505T100431 CREATED:20240515T221149Z LAST-MODIFIED:20240709T123453Z UID:7391-1716336000-1716422399@holography.cl SUMMARY:Laura Andrianopoli Politecnico di Torino DESCRIPTION:We are happy to announce a new seminar by Laura Andrianopoli from Politecnico di Torino. Her research interests are mainly focused on Theoretical particle physics\, more specifically supergravity\, supersymmetry and quantum gravity. Dr. Laura also was awarded with Premio “Le Scienze” conferred by Rivista “Le Scienze” for the internationally recognized level of her researches in supergravity. \nThe event will take place in the Auditorio Ninoslav Bralic at Pontificia Universidad Católica de Chile\, here we leave you the details of the talk \nTitle:\nAdS3 supergravity with chiral torsion and its BPS states. \nAbstract:\nI will present some recent results on torsion deformations of 3-dimensional Einstein-Cartan gravity\, which behave as a chiral matter-source. They involve a peculiar interplay between the vector and the singlet irreducible components of the torsion which feature a formal analogy with the equation for a Beltrami fluid.\n“Beltrami-torsion” can describe a torsional deformation of the BTZ black hole which\, in some cases\, removes the causal singularity.\nI will also discuss the presence of Killing spinors in the deformed geometry\, and show the corresponding supersymmetric background obtained as a torsional deformation of N = 2 Achucarro-Townsend supergravity. \n  URL:https://holography.cl/activity/seminar-by-laura-andrianopoli-politecnico-di-torino/ LOCATION:Pontificia Universidad Católica de Chile\, Campus San Joaquín\, Santiago\, Chile CATEGORIES:Seminars ATTACH;FMTTYPE=image/jpeg:https://holography.cl/wp-content/uploads/2024/05/Laura-Andrianopoli-poster.jpeg END:VEVENT BEGIN:VEVENT DTSTART;VALUE=DATE:20240304 DTEND;VALUE=DATE:20240307 DTSTAMP:20260505T100431 CREATED:20240104T140037Z LAST-MODIFIED:20240404T194558Z UID:6994-1709510400-1709769599@holography.cl SUMMARY:Workshop on Celestial Holography and Asymptotic Symmetries DESCRIPTION: URL:https://holography.cl/celestial LOCATION:Universidad Adolfo Ibáñez\, Sede Errázuriz\, Pdte. Errázuriz 3485\, Las Condes\, Santiago\, Chile CATEGORIES:Events END:VEVENT BEGIN:VEVENT DTSTART;VALUE=DATE:20240111 DTEND;VALUE=DATE:20240118 DTSTAMP:20260505T100431 CREATED:20230628T205625Z LAST-MODIFIED:20240226T192221Z UID:6638-1704931200-1705535999@holography.cl SUMMARY:Topological and Holographic Quantum Matter: School and Conference DESCRIPTION: URL:http://holography.cl/activities/events/thqm LOCATION:Pontificia Universidad Católica de Chile\, Campus San Joaquín\, Santiago\, Chile CATEGORIES:Events END:VEVENT BEGIN:VEVENT DTSTART;VALUE=DATE:20231106 DTEND;VALUE=DATE:20231116 DTSTAMP:20260505T100431 CREATED:20230815T040304Z LAST-MODIFIED:20240104T113826Z UID:6726-1699228800-1700092799@holography.cl SUMMARY:Lecture Series by Marc Henneaux: Asymptotic Structure of Gravity and Gauge Theories DESCRIPTION:The classroom distribution for the forthcoming days is the following: \nMonday 6/11\nLecture 1: classroom AP003 from 11:00 to 13:00 hrs.\nLecture 2: classroom AP003 from 15:00 to 17:00 hrs. \nWednesday 8/11\nLecture 3: classroom AP302 from 11:00 to 13:00 hrs.\nLecture 4: classroom AP302 from 15:00 to 17:00 hrs. \nMonday 13/11\nLecture 5: classroom AP201 from 11:00 to 13:00 hrs.\nLecture 6: classroom AP302 from 15:00 to 17:00 hrs. \nWednesday 15/11\nLecture 7: classroom AP302 from 11:00 to 13:00 hrs.\nLecture 8: classroom AP302 from 15:00 to 17:00 hrs. \n  \nOutline \nThe lectures will develop a pedagogical introduction to the asymptotic structure of gauge theories and gravity. A systematic derivation of the asymptotic symmetries will be given\, with a particular emphasis on the asymptotically flat case.  Hamiltonian methods at spatial infinity will be followed throughout. Matching with null infinity will also be discussed. \nContents \n1. Hamiltonian vector fields and Hamiltonian functions\n    Proper and improper gauge transformations\n    General theorems \n2. Asymptotic structure of Chern-Simons theories with multiple boundaries \n3. Connection between spatial infinity and null infinity in (asymptotically) Minkowski space: the example of the scalar field \n4. Asymptotic symmetries of electromagnetism and angle-dependent u(1) transformations \n5. Gravity in the asymptotically flat case – BMS group \n6. Supertranslation ambiguity in the angular momentum; nonlinear redefinitions leading to a supertranslation invariant angular momentum \n7. Further topics (depending on time): higher dimensions\, supergravity \nReferences \n\nSymplectic form with surface term contribution\, electromagnetism\n– M. Henneaux\, C. Troessaert – “Asymptotic symmetries of electromagnetism at spatial infinity” – JHEP 05 (2018) 137- arXiv\nConnection between spatial infinity and null infinity (scalar field)\n– M. Henneaux\, C. Troessaert –”Asymptotic structure of a massless scalar field and its dual two-form field at spatial infinity” – JHEP 05 (2019) 147 – arXiv\n+ enclosed slides\nBMS group in Hamiltonian form\n– M. Henneaux\, C. Troessaert – “The Asymptotic Structure of Gravity at Spatial Infinity in Four Spacetime Dimensions” – Proceedings of the Steklov Institute of Mathematics 309 (2020) 127–149 (available on the arXiv)\n– M. Henneaux\, C. Troessaert –”Hamiltonian structure and asymptotic symmetries of the Einstein-Maxwell system at spatial infinity” – JHEP 07 (2018) 171 – arXiv\n(see also earlier work M. Henneaux\, C. Troessaert – “BMS group at spatial infinity: the Hamiltonian (ADM) approach” – JHEP 03 (2018) 147 – arXiv)\nSupertranslation-invariant Lorentz generators\n– O. Fuentealba\, M. Henneaux and C. Troessaert – « Logarithmic supertranslations and supertranslation-invariant Lorentz charges » – JHEP 02 (2023) 248- arXiv\n– O. Fuentealba\, M. Henneaux and C. Troessaert – « Asymptotic Symmetry Algebra of Einstein Gravity and Lorentz Generators » – Phys. Rev. Lett. 131 (2023) 111402 – arXiv\n(for electromagnetism: O. Fuentealba\, M. Henneaux and C. Troessaert – « A note on the asymptotic symmetries of electromagnetism » – JHEP 03 (2023) 073 – arXiv)\n\nResources \n\nLectures PDF URL:https://holography.cl/activity/marc-henneaux-lectures/ LOCATION:Pontificia Universidad Católica de Chile\, Campus San Joaquín\, Santiago\, Chile CATEGORIES:Events ATTACH;FMTTYPE=image/png:https://holography.cl/wp-content/uploads/2023/10/Poster-Henneaux.png END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Santiago:20230926T110000 DTEND;TZID=America/Santiago:20230926T110000 DTSTAMP:20260505T100431 CREATED:20231005T153508Z LAST-MODIFIED:20231007T000547Z UID:6774-1695726000-1695726000@holography.cl SUMMARY:Carlos Sopuerta Universitat de València DESCRIPTION:[vc_row][vc_column][vc_column_text]On the dynamics of isolated black holes \nAbstract: There are two important physical processes around black holes that can be well described using relativistic perturbation theory: Scattering of electromagnetic and gravitational waves (and other fields) and quasinormal mode oscillations that take place\, for instance\, after the coalescence of a black hole binary. It is well-known that these physical processes\, at first perturbative order\, can be described in terms of gauge-invariant master functions. We have analyzed the space of all possible master functions for the case of non-rotating (Schwarzschild) black holes and we find two differentiated branches of solutions. One branch includes the known results: In the odd-parity case\, the most general master function is an arbitrary linear combination of the Regge-Wheeler and the Cunningham-Price-Moncrief master functions whereas in the even-parity case it is an arbitrary linear combination of the Zerilli master function and another master function that is new to our knowledge. The other branch is very different since it includes an infinite collection of potentials which in turn lead to an independent collection master of functions which depend on the potential. We also find that of all them are connected via Darboux transformations. These transformations preserve physical quantities like the quasinormal mode frequencies and the infinite hierarchy of Korteweg-de Vries conserved quantities\, revealing a new hidden symmetry in the description of the perturbations of Schwarzschild black holes: Darboux covariance. In this talk I will describe this hidden symmetry and how to apply it to the computation of scattering probabilities.\n \n[/vc_column_text][/vc_column][/vc_row] URL:https://holography.cl/activity/carlos-sopuerta/ LOCATION:Online\, Zoom CATEGORIES:Seminars ATTACH;FMTTYPE=image/jpeg:https://holography.cl/wp-content/uploads/2023/10/Carlos-Sopuerta.jpeg END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Santiago:20230705T140000 DTEND;TZID=America/Santiago:20230705T140000 DTSTAMP:20260505T100431 CREATED:20230703T180801Z LAST-MODIFIED:20230703T190836Z UID:6662-1688565600-1688565600@holography.cl SUMMARY:Edgar Shaghoulian University of California Santa Cruz DESCRIPTION:[vc_row][vc_column][vc_column_text]Modular invariance and thermal effective field theory \nAbstract: I will review some old perspectives and results on modular invariance in higher-dimensional conformal field theories (D > 2). I will then discuss how thermal effective field theory provides a new perspective on the problem\, letting us relate the leading subextensive piece of the thermal entropy on a sphere to a Casimir energy.\n \n[/vc_column_text][/vc_column][/vc_row] URL:https://holography.cl/activity/edgar-shaghoulian-university-of-california-santa-cruz/ LOCATION:Online\, Zoom CATEGORIES:Seminars ATTACH;FMTTYPE=image/png:https://holography.cl/wp-content/uploads/2023/07/Edgar-Shaghoulian.png END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Santiago:20230601T160000 DTEND;TZID=America/Santiago:20230601T160000 DTSTAMP:20260505T100431 CREATED:20230529T195305Z LAST-MODIFIED:20230529T201722Z UID:6510-1685635200-1685635200@holography.cl SUMMARY:Olivera Mišković Pontificia Universidad Católica de Valparaíso DESCRIPTION:[vc_row][vc_column][vc_column_text]¿De verdad vivimos en un holograma? XXV Aniversario de la correspondencia AdS/CFT \nHace 25 años\, en noviembre de 1997\, apareció en arXiv.org un manuscrito del físico argentino Juan Maldacena (U. Princeton)\, que introduciría un cambio ex- traordinario en la Física Teórica de Altas Energías. En el artículo se conjetura que las teorías de campos conformes (CFT) pueden ser vistas como un “holograma” de una teoría de gravedad (cuerdas) en el espacio anti-de Sitter (AdS)\, lo que se conoce como la correspondencia AdS/CFT. Hoy\, 25 años más tarde\, con más de 18.000 citas\, el artículo de Maldacena se ha convertido en uno de los trabajos más citados de la historia. En esta charla abordaremos\, en palabras simples\, la idea y razones del porqué esta famosa correspondencia todavía tiene una influencia determinante en la física contemporánea.\n \n[/vc_column_text][/vc_column][/vc_row] URL:https://holography.cl/activity/olivera-miskovic-pontificia-universidad-catolica-de-valparaiso/ LOCATION:Universidad Andrés Bello\, Campus República\, Echaurren 227\, Santiago\, Chile CATEGORIES:Seminars ATTACH;FMTTYPE=image/png:https://holography.cl/wp-content/uploads/2023/05/PosterOliveraMiskovic2.png END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Santiago:20230531T170000 DTEND;TZID=America/Santiago:20230531T170000 DTSTAMP:20260505T100431 CREATED:20230524T010302Z LAST-MODIFIED:20230529T202038Z UID:6477-1685552400-1685552400@holography.cl SUMMARY:Carlos Hoyos Universidad de Oviedo DESCRIPTION:[vc_row][vc_column][vc_column_text]Holographic Baryonic Matter without Flavor Branes \nAbstract: In holographic models flavor is usually realized by introducing additional branes in a dual supergravity background. With this realization one is forced to work in a probe approximation or solve supergravity equations with sources\, which typically requires introducing additional phenomenological simplifications. In addition\, since there are no fields carrying baryon charge on the branes\, baryonic matter is dual to solitonic configurations on the flavor branes\, which makes challenging to describe a state with non-zero baryon density. Here we will show how these issues can be avoided by considering a holographic model where baryon symmetry is already realized in the dual supergravity sector. We construct confining solutions with non-zero baryon density that do not involve solitonic configurations despite the absence of dual fields carrying baryon charge. The model is a three-dimensional field theory cousin of Klebanov-Strassler and shares with it some interesting features like a duality cascade.\n \n[/vc_column_text][/vc_column][/vc_row] URL:https://holography.cl/activity/carlos-hoyos-universidad-de-oviedo/ LOCATION:Universidad Adolfo Ibáñez\, Sede Errázuriz\, Pdte. Errázuriz 3485\, Las Condes\, Santiago\, Chile CATEGORIES:Seminars ATTACH;FMTTYPE=image/png:https://holography.cl/wp-content/uploads/2023/05/Carlos-Hoyos.png END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Santiago:20230524T140000 DTEND;TZID=America/Santiago:20230524T160000 DTSTAMP:20260505T100431 CREATED:20230517T192814Z LAST-MODIFIED:20230517T223508Z UID:6371-1684936800-1684944000@holography.cl SUMMARY:Cristóbal Corral Universidad Arturo Prat DESCRIPTION:[vc_row][vc_column][vc_column_text]Axial Anomaly in Nonlinear Conformal Electrodynamics \nAbstract: In this talk\, we present the axial anomaly of Dirac spinors on gravitational instanton backgrounds in the context of nonlinear electrodynamics. In order to do so\, we consider Einstein gravity minimally coupled to a recently proposed conformal electrodynamics that enjoys duality transformation invariance. These symmetries allow us to generalize the Eguchi-Hanson configuration while preserving its geometry. We then compute the Dirac index of the nonlinearly charged Eguchi-Hanson and Taub-NUT configurations. We find that there is an excess of positive chiral Dirac fermions over the negative ones which triggers the anomaly.\n \n[/vc_column_text][/vc_column][/vc_row] URL:https://holography.cl/activity/cristobal-corral-universidade-arturo-prat/ LOCATION:Universidad Andrés Bello\, Campus República\, Echaurren 227\, Santiago\, Chile CATEGORIES:Seminars ATTACH;FMTTYPE=image/png:https://holography.cl/wp-content/uploads/2023/05/PosterCristobalCorral.png END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Santiago:20230510T150000 DTEND;TZID=America/Santiago:20230510T170000 DTSTAMP:20260505T100431 CREATED:20230508T010457Z LAST-MODIFIED:20230518T041138Z UID:6332-1683730800-1683738000@holography.cl SUMMARY:Javier Matulich Universidad Autónoma de Madrid DESCRIPTION:[vc_row][vc_column][vc_column_text]You can watch Javier’s talk here: \nhttps://holography.cl/wp-content/uploads/2023/05/Javier-Matulich-Zoom.mp4\n[/vc_column_text][/vc_column][/vc_row][vc_row][vc_column][vc_empty_space][/vc_column][/vc_row][vc_row][vc_column][vc_column_text]The Asymptotic Structure of Flat Spacetimes \nAbstract: One of the most impressive achievements of theoretical physics is the “principle of least action” of classical mechanics\, where a substantial number of phenomena can be described by just a single statement: the action must be stationary under arbitrary variations of the dynamical variables\, with initial and final condition that must be held fixed. Therefore\, the powerful formulation of classical and quantum mechanics based in the action\, needs to be supplemented with a proper treatment of boundary conditions at infinity. This issue is of vital importance in the case of theories where the sufficiently rapidly decay of the fields at infinity is not a valid assumption. For example\, the asymptotic symmetry analysis of General Relativity leads to the renowned BMS (Bondi-van der Burg-Metzner-Sachs) group\, which corresponds to a fundamental piece in the understanding of the infrared dynamics of gravitational interactions. In this talk\, the asymptotic structure of flat spacetimes will be discussed\, focusing on the case of gravity and its interactions\, starting in three spacetime dimensions and then discussing the higher dimensional case.\n \n[/vc_column_text][/vc_column][/vc_row] URL:https://holography.cl/activity/javier-matulich-ift-universidad-autonoma-de-madrid/ LOCATION:Universidad Adolfo Ibáñez\, Sede Errázuriz\, Pdte. Errázuriz 3485\, Las Condes\, Santiago\, Chile CATEGORIES:Seminars ATTACH;FMTTYPE=image/png:https://holography.cl/wp-content/uploads/2023/05/Poster-Javier-Matulich.png END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Santiago:20230330T163000 DTEND;TZID=America/Santiago:20230330T173000 DTSTAMP:20260505T100431 CREATED:20230325T233325Z LAST-MODIFIED:20230426T145029Z UID:5764-1680193800-1680197400@holography.cl SUMMARY:Max Bañados Pontificia Universidad Católica de Chile DESCRIPTION:[vc_row][vc_column][/vc_column][/vc_row] URL:https://holography.cl/activity/max-banados/ LOCATION:Universidad Andrés Bello\, Campus República\, Echaurren 227\, Santiago\, Chile CATEGORIES:Seminars ATTACH;FMTTYPE=image/jpeg:https://holography.cl/wp-content/uploads/2023/04/Seminar-Max-Banados.jpg END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Santiago:20230330T150000 DTEND;TZID=America/Santiago:20230330T160000 DTSTAMP:20260505T100431 CREATED:20230325T233120Z LAST-MODIFIED:20230426T145208Z UID:5760-1680188400-1680192000@holography.cl SUMMARY:Marios Petropoulos CPHT\, Ecole Polytechnique DESCRIPTION:[vc_row][vc_column][/vc_column][/vc_row] URL:https://holography.cl/activity/marios-petropoulos/ LOCATION:Universidad Andrés Bello\, Campus República\, Echaurren 227\, Santiago\, Chile CATEGORIES:Seminars ATTACH;FMTTYPE=image/jpeg:https://holography.cl/wp-content/uploads/2023/04/Seminar-Marios-Petropoulos.jpg END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Santiago:20230116T000000 DTEND;TZID=America/Santiago:20230120T235959 DTSTAMP:20260505T100431 CREATED:20221209T164316Z LAST-MODIFIED:20221209T164316Z UID:5210-1673827200-1674259199@holography.cl SUMMARY:NordGrav@ICEN 2023 DESCRIPTION: URL:https://sites.google.com/view/nordgraviquique#new_tab LOCATION:Universidad Arturo Prat\, ICEN\, Iquique\, Chile CATEGORIES:Events ATTACH;FMTTYPE=image/png:https://holography.cl/wp-content/uploads/2022/12/Poster-NordGrav2023.png END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Santiago:20230111T090000 DTEND;TZID=America/Santiago:20230111T170000 DTSTAMP:20260505T100431 CREATED:20221229T163222Z LAST-MODIFIED:20221229T163222Z UID:5336-1673427600-1673456400@holography.cl SUMMARY:2nd Workshop on Asymptotic Symmetries & Holography DESCRIPTION: URL:https://holography.cl/activity/2nd-workshop-on-asymptotic-symmetries-holography/ LOCATION:Universidad Adolfo Ibáñez\, Sede Peñalolen\, Av. Diagonal Las Torres 2640\, Peñalolen\, Santiago\, Metropolitana\, 7941169\, Chile CATEGORIES:Events ATTACH;FMTTYPE=image/png:https://holography.cl/wp-content/uploads/2022/12/Poster-IIWASH.png END:VEVENT BEGIN:VEVENT DTSTART;VALUE=DATE:20221205 DTEND;VALUE=DATE:20221208 DTSTAMP:20260505T100431 CREATED:20221012T210118Z LAST-MODIFIED:20230315T181302Z UID:4066-1670198400-1670457599@holography.cl SUMMARY:III Latin American Workshop on Gravity and Holography DESCRIPTION: URL:http://holography.cl/activities/events/lawgh2022 LOCATION:Universidad Adolfo Ibáñez\, Sede Errázuriz\, Pdte. Errázuriz 3485\, Las Condes\, Santiago\, Chile CATEGORIES:Events ATTACH;FMTTYPE=image/png:https://holography.cl/wp-content/uploads/2022/09/Poster-LAWGH.png END:VEVENT BEGIN:VEVENT DTSTART;VALUE=DATE:20221201 DTEND;VALUE=DATE:20221204 DTSTAMP:20260505T100431 CREATED:20221012T205816Z LAST-MODIFIED:20230315T181330Z UID:4063-1669852800-1670111999@holography.cl SUMMARY:Latin American School on Gravity and Holography DESCRIPTION: URL:http://holography.cl/activities/events/lawgh2022 LOCATION:Pontificia Universidad Católica de Chile\, Campus San Joaquín\, Santiago\, Chile CATEGORIES:Events ATTACH;FMTTYPE=image/png:https://holography.cl/wp-content/uploads/2022/09/Poster-LAWGH-School.png END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Santiago:20221130T150000 DTEND;TZID=America/Santiago:20221130T163000 DTSTAMP:20260505T100431 CREATED:20221128T034456Z LAST-MODIFIED:20230524T032425Z UID:5079-1669820400-1669825800@holography.cl SUMMARY:Tomás Andrade U. Barcelona DESCRIPTION:Miércoles 30 de Noviembre | 15:00 Auditorio Edificio Investigación R1\, Republica 330 Universidad Andrés Bello URL:https://holography.cl/activity/tomas-andrade-u-barcelona/ LOCATION:Universidad Andrés Bello\, Campus República\, Echaurren 227\, Santiago\, Chile CATEGORIES:Seminars ATTACH;FMTTYPE=image/png:https://holography.cl/wp-content/uploads/2022/11/Poster-Andrade.png END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Santiago:20221129T150000 DTEND;TZID=America/Santiago:20221129T163000 DTSTAMP:20260505T100431 CREATED:20221128T032207Z LAST-MODIFIED:20230524T032308Z UID:5070-1669734000-1669739400@holography.cl SUMMARY:Veronika Hubeny UC Davis DESCRIPTION:Edificio R2\, Echaurren 277\, Tercer Piso\, Sala FIAC\, Universidad Andrés Bello. URL:https://holography.cl/activity/veronika-hubeny/ LOCATION:Universidad Andrés Bello\, Campus República\, Echaurren 227\, Santiago\, Chile CATEGORIES:Seminars ATTACH;FMTTYPE=image/png:https://holography.cl/wp-content/uploads/2022/11/Poster-Hubeny.png END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Santiago:20221102T140000 DTEND;TZID=America/Santiago:20221102T160000 DTSTAMP:20260505T100431 CREATED:20221101T032939Z LAST-MODIFIED:20221101T032939Z UID:4569-1667397600-1667404800@holography.cl SUMMARY:Journal Club DESCRIPTION:[vc_row][vc_column][vc_column_text]In this week’s Journal Club\, we have \n  \n\nFelipe Díaz (UNAB): “Thermal Fluctuations and Holographic Charged\nRenyi entropy”\n\nAbstract: “Renyi entropies correspond to a one-parameter generalization\nof Von-Neumann entropy but with some advantages; they are easier to\nstudy\, both numerically and experimentally. In the AdS/CFT context\, they\nhave been also shown to provide great insights into the comprehension of\nthe entropy area law and in the black hole information problem. For a\nCFT with a global symmetry\, it is possible to extend the notion to the\nso called “charged Renyi entropy” by means of a conformal map that leads\nto a grand canonical partition function with a Wilson loop encircling\nthe entangling region. This quantity has been conjectured to be\nholographically dual to charged black holes. In this talk we extend this\nresult to include nonlinear sources and compute the thermal fluctuations\non the gravity side. These corrections lead to a new logarithmic\ndivergence in the entanglement entropy which usually appear in a field\ntheory with spontaneous breaking of a continuous symmetry.” \n  \n\nAnthony Osses (UC): “Breve introducción a las amplitudes celestiales:\nel plano complejo de los pesos conformes”\n\nAbstract: “En esta charla se dará una breve introducción a “Amplitudes\ncelestiales”. Estas son una realización de holografia en espacios\nasintoticamente planos que mapea amplitudes de scattering en 4D\nfunciones a funciones de correlación de una aún desconocida 2D CFT. Se\ndará especial énfasis al rol que juega la estructura analítica de los\npesos conformes y cómo ésta conecta el IR y el UV de una nueva e\ninteresante manera.” \n[/vc_column_text][/vc_column][/vc_row] URL:https://holography.cl/activity/journal-club/ LOCATION:Online\, Zoom CATEGORIES:Journal Club END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Santiago:20221014T130000 DTEND;TZID=America/Santiago:20221014T143000 DTSTAMP:20260505T100431 CREATED:20221013T162939Z LAST-MODIFIED:20230524T032129Z UID:4028-1665752400-1665757800@holography.cl SUMMARY:Max Metlitski MIT DESCRIPTION:[vc_row][vc_column][vc_column_text css=”.vc_custom_1665623294973{margin-top: 20px !important;margin-bottom: 40px !important;}”] \nHolographyCL Seminar on October 14\nWe are happy to announce a special seminar! Professor Max Metlitski from the Massachusetts Institute of Technology (MIT) will be telling us about “Boundary and plane defect criticality in the 3d O(N) model”. \nWhen: Friday\, October 14\, 13.00 hrs (Chilean time) \nWhere: Streamed via Zoom \nHow: please register at contacto@holography.cl. We will send you the Zoom link to your email. \n[/vc_column_text][vc_column_text]   Part 1: \nhttps://holography.cl/wp/wp-content/uploads/2022/10/Max-Metliski-Part-1.mp4\n  \n   Part 2: \nhttps://holography.cl/wp/wp-content/uploads/2022/10/Max-Metliski-Part-2.mp4\n[/vc_column_text][/vc_column][/vc_row] \nTitle: “Boundary and plane defect criticality in the 3d O(N) model” URL:https://holography.cl/activity/max-metlitski/ LOCATION:Online\, Zoom CATEGORIES:Seminars ATTACH;FMTTYPE=image/png:https://holography.cl/wp-content/uploads/2022/10/Max-Metlitski.png END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Santiago:20221005T140000 DTEND;TZID=America/Santiago:20221005T160000 DTSTAMP:20260505T100431 CREATED:20221010T221048Z LAST-MODIFIED:20230926T192455Z UID:4758-1664978400-1664985600@holography.cl SUMMARY:Journal Club DESCRIPTION:[vc_row][vc_column][vc_column_text] \nThis week’s journal club: \n\n Anthonny Canazas (UNAB): “Una demostración con funciones signo y simetría conforme 1D”\n\nAbstract: The AdS2/CFT1 correspondence has recently drawn a lot of attention in our community. Understanding one-dimensional conformal symmetry is essential in such a scenario. This time we will discuss the expression Σ=sgn(τ1-τ2)+sgn(τ2-τ3)+sgn(τ3-τ4)+sgn(τ4-τ1) which arises in the context of calculating a 4-point function applying the GKPW prescription to a propagating scalar field in AdS2 with interpolating boundary conditions between Dirichlet and Neumann. The fact that Σ is conformally invariant and cannot be written as a function of the invariant u (cross ratio) challenges us to ask ourselves questions to reflect on. \n  \n\nRodrigo Olea (UNAB): “On minimal surfaces”\n\nAbstract: We explore the connection between the notion of minimality\nfor surfaces in manifolds with conical defects and what is usually computed from Variational Calculus. In addition\, in a holographic framework\, we renormalize the codimension-2 area functional for surfaces anchored to the conformal boundary. \n[/vc_column_text][/vc_column][/vc_row] URL:https://holography.cl/activity/journal-club-2/ LOCATION:Online\, Zoom CATEGORIES:Journal Club END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Santiago:20220608T140000 DTEND;TZID=America/Santiago:20220608T153000 DTSTAMP:20260505T100431 CREATED:20220608T180021Z LAST-MODIFIED:20230524T031314Z UID:4319-1654696800-1654702200@holography.cl SUMMARY:Pedro Vieira ICTP-SAIFR/Perimeter Institute DESCRIPTION:HolographyCL Seminar on June 08\n\n\n\nWe announce our next seminar to be held on June 08 where Prof. Pedro Vieira from the Perimeter Institute for Theoretical Physics and the South American Institute for Fundamental Research (ICTP – SAIFR) will present his talk entitled “Stampedes: Exactly Solvable Corners of QFTs”. \n\n\n\n📖Abstract \n\n\n\n  \n\n\n\n📍The seminar will be via Zoom \n\n\n\n🔖 Registration \n\n\n\nTo register for this seminar please send an email to contacto@holography.cl with your full name and RUT (ID number). You will then receive a confirmation email with the Zoom link for the talk. URL:https://holography.cl/activity/pedro-vieira/ LOCATION:Online\, Zoom CATEGORIES:Seminars ATTACH;FMTTYPE=image/jpeg:https://holography.cl/wp-content/uploads/2022/08/Foto-Vieira.jpeg END:VEVENT BEGIN:VEVENT DTSTART;TZID=America/Santiago:20220420T150000 DTEND;TZID=America/Santiago:20220420T170000 DTSTAMP:20260505T100431 CREATED:20220420T190034Z LAST-MODIFIED:20230524T032007Z UID:4313-1650466800-1650474000@holography.cl SUMMARY:Alejandra Castro University of Amsterdam DESCRIPTION:[vc_row][vc_column][vc_column_text] \nHolographyCL Seminar on April 20\n\n\nWe announce our first seminar\, to be held next April 20\, in which Prof. Alejandra Castro from the University of Amsterdam will present her talk entitled “Near AdS-2 Spectroscopy”. \n\n\n📖Abstract \n \n“In this talk\, I will describe holographic properties of near AdS2 spacetimes that arise within spherically symmetric configurations of N=2 4-D supergravity\, for both gauged and ungauged theories. These theories pose a rich space of AdS2 x S2 backgrounds\, and their responses in the near-AdS2 region are not universal. I will show that the spectrum of operator dual to the matter fields\, and their cubic interactions\, are sensitive to the properties of the background and the theory it is embedded in. The properties that have the most striking effect are whether the background is BPS or non-BPS\, and if the theory is gauged or ungauged. The resulting differences will have an imprint on the quantum nature of the microstates of near-extremal black holes\, reflecting that not all extremal black holes respond equally when kicked away from extremality.” \n\n\n📍Location \n\n\nAv. República 252\, R2-413\, Campus República\, Universidad Andrés Bello \n\n\n \n\n\n🔖 Registration \n\n\nTo register for this seminar please send an email to contacto@holography.cl with your full name and RUT (ID number). You will then receive a confirmation email with a form that has to be filled in order to access to the campus. \n \n\n[/vc_column_text][/vc_column][/vc_row] URL:https://holography.cl/activity/alejandra-castro/ LOCATION:Universidad Andrés Bello\, Campus República\, Echaurren 227\, Santiago\, Chile CATEGORIES:Seminars ATTACH;FMTTYPE=image/jpeg:https://holography.cl/wp-content/uploads/2022/11/Alejandra-Castro.jpeg END:VEVENT BEGIN:VEVENT DTSTART;VALUE=DATE:20220404 DTEND;VALUE=DATE:20220407 DTSTAMP:20260505T100431 CREATED:20220310T131500Z LAST-MODIFIED:20220310T131500Z UID:4194-1649030400-1649289599@holography.cl SUMMARY:Kickoff Meeting HolographyCL DESCRIPTION: URL:https://holography.cl/activities/events/kickoff/ LOCATION:Pontificia Universidad Católica de Valparaíso\, Campus Curauma\, Valparaíso\, Chile CATEGORIES:Events ATTACH;FMTTYPE=image/png:https://holography.cl/wp-content/uploads/2022/05/Poster-Kickoff.png END:VEVENT END:VCALENDAR