BEGIN:VCALENDAR VERSION:2.0 PRODID:researchseminars.org CALSCALE:GREGORIAN X-WR-CALNAME:researchseminars.org BEGIN:VEVENT SUMMARY:Alexey Koshelev (UBI) DTSTART:20211206T140000Z DTEND:20211206T150000Z DTSTAMP:20260422T212728Z UID:FHD3/1 DESCRIPTION:Title: Res olving Black Holes singularities in Analytic infinite derivative theories of gravity\nby Alexey Koshelev (UBI) as part of Frontiers of Holograph ic Duality-3\n\n\nAbstract\nIn my talk I will show that Analytic infinite derivative gravity in any dimension represents the most general gravity ac tion ever needed to extract propagator around maximally symmetric spacetim es. Moving on\, I will show that such a theory is geodesically complete le ading to the resolution of the Black Hole singularities. Thus singular bla ckholes (Schwarzschild as an example) can be understood as non-singular c ompact objects still with a horizon\, whose core is governed by the mass a nd the effective scale of the non-locality.\n LOCATION:https://researchseminars.org/talk/FHD3/1/ END:VEVENT BEGIN:VEVENT SUMMARY:Oleg Andreev (Munich University) DTSTART:20211207T140000Z DTEND:20211207T150000Z DTSTAMP:20260422T212728Z UID:FHD3/2 DESCRIPTION:Title: Fro m strings to QCD: The study of doubly heavy hadrons\nby Oleg Andreev ( Munich University) as part of Frontiers of Holographic Duality-3\n\n\nAbst ract\nWe will discuss the string theory constructions for the $QQq$ and $Q Q\\bar q\\bar q $systems. Following the hadro-quarkonium picture the poten tial is a function of separation between the heavy quarks. The results sh ow the universality of the string tension and factorization at small separ ations expected from heavy quark-diquark symmetry. The potentials look ver y similar at small quark separations but at larger separations they differ . The reason for this is that the flattening of the potentials happens at two well-separated scales as follows from the two different mechanisms: st ring breaking by light quarks for QQq and string junction annihilation for $QQ\\bar q\\bar q$.\n LOCATION:https://researchseminars.org/talk/FHD3/2/ END:VEVENT BEGIN:VEVENT SUMMARY:Anastasia Golubtsova (JINR) DTSTART:20211207T150000Z DTEND:20211207T160000Z DTSTAMP:20260422T212728Z UID:FHD3/3 DESCRIPTION:by Anastasia Golubtsova (JINR) as part of Frontiers of Hologra phic Duality-3\n\nAbstract: TBA\n LOCATION:https://researchseminars.org/talk/FHD3/3/ END:VEVENT BEGIN:VEVENT SUMMARY:Matti Jarvinen (APCTP) DTSTART:20211208T130000Z DTEND:20211208T140000Z DTSTAMP:20260422T212728Z UID:FHD3/4 DESCRIPTION:Title: Gen eralized 3D instanton crystals\nby Matti Jarvinen (APCTP) as part of F rontiers of Holographic Duality-3\n\n\nAbstract\nNuclear matter at large n umber of colors is necessarily in a solid phase. In particular holographic nuclear matter takes the form of a crystal of instantons of the flavor gr oup. I analyze the three-dimensional crystal structures and the orientatio n patterns for the two-body potential motivated by holographic duality. I use simulations of large ensembles of instantons to identify the lattice s tructure and orientations for various parameter values of the two-body pot ential. The resulting phase diagram is surprisingly complex\, including a variety of ferromagnetic and antiferromagnetic crystals with various globa l orientation patterns\, and various "non-Abelian" crystals where orientat ions have no preferred direction. The simulation results are augmented by analytic analysis of the long-distance divergences\, and numerical computa tion of the (divergence free) energy differences between the non-Abelian c rystals\, which precisely determine the structure of the phase diagram.\n LOCATION:https://researchseminars.org/talk/FHD3/4/ END:VEVENT BEGIN:VEVENT SUMMARY:Giuseppe Policastro (Ecole Normale) DTSTART:20211208T140000Z DTEND:20211208T150000Z DTSTAMP:20260422T212728Z UID:FHD3/5 DESCRIPTION:Title: A s emi-holographic model of non-Fermi liquids\nby Giuseppe Policastro (Ec ole Normale) as part of Frontiers of Holographic Duality-3\n\n\nAbstract\n In recent years\, the holographic correspondence has been used in many con texts\nto explore properties of strongly coupled systems that are hard to explain\nby conventional methods. One instance of such systems is given by the high-T superconductors\,\nwhich exhibit non-Fermi liquid behavior in the so-called "strange metal" phase above the critical temperature.\nI wil l discuss the holographic constructions of these systems\,\nand in particu lar a model that I and my collaborators are currently investigating\,\nbas ed on a semi-holographic approach. I will discuss the results for the tran sport properties\, in particular\nI will show that under certain conditio ns an emergent linear-in-T behavior\nof the longitudinal resistivity appea rs over a significant range of temperatures.\n LOCATION:https://researchseminars.org/talk/FHD3/5/ END:VEVENT BEGIN:VEVENT SUMMARY:Jonah Kudler-Flam (Chicago University) DTSTART:20211209T140000Z DTEND:20211209T150000Z DTSTAMP:20260422T212728Z UID:FHD3/6 DESCRIPTION:Title: Dis tinguishability in Random States\, Eigenstates\, and Gravity\nby Jonah Kudler-Flam (Chicago University) as part of Frontiers of Holographic Dual ity-3\n\n\nAbstract\nRecently\, there has been significant progress in sol ving the black hole information problem from explicit calculations of the entropy of Hawking radiation\, confirming consistency of gravity with unit arity. One aspect of the information problem left unresolved by entropy ca lculations is the distinguishability of different black hole microstates: why do different microstates appear to lead to the same final (thermal) st ate? I will address this problem by studying the distinguishability of rad iation coming from different black holes. In parallel\, I will present a d erivation of the subsystem eigenstate thermalization hypothesis for a clas s of chaotic many-body systems as well as generalizations to tensor networ k states.\n LOCATION:https://researchseminars.org/talk/FHD3/6/ END:VEVENT BEGIN:VEVENT SUMMARY:Saso Grozdanov (University of Ljubljana) DTSTART:20211209T150000Z DTEND:20211209T160000Z DTSTAMP:20260422T212728Z UID:FHD3/7 DESCRIPTION:by Saso Grozdanov (University of Ljubljana) as part of Frontie rs of Holographic Duality-3\n\nAbstract: TBA\n LOCATION:https://researchseminars.org/talk/FHD3/7/ END:VEVENT BEGIN:VEVENT SUMMARY:Larus Thorlacius (University of Iceland) DTSTART:20211210T140000Z DTEND:20211210T150000Z DTSTAMP:20260422T212728Z UID:FHD3/8 DESCRIPTION:Title: Mov ing black branes and Lifshitz hydrodynamics at generic z\nby Larus Tho rlacius (University of Iceland) as part of Frontiers of Holographic Dualit y-3\n\n\nAbstract\nQuantum critical fluids with Lifshitz symmetry\, or Lif shitz fluids for short\, have interesting properties that set them aside f rom more conventional fluid systems. In particular\, a Lifshitz fluid with a generic dynamical critical exponent z > 1 does not have boost symmetry meaning that a moving fluid is physically distinct from a fluid at rest in a moving coordinate frame. We show how a relatively simple Einstein-Maxwe ll-Dilaton model provides a concrete holographic realisation of Lifshitz f luids. In this setting\, a black brane at generic z carrying linear moment um along the boundary corresponds to a non-equilibrium steady state of the fluid. We obtain the stress tensor complex for the dual field theory via a suitably defined holographic renormalisation procedure and demonstrate t hat the expected hydrodynamic relations for a Lifshitz perfect fluid are s atisfied.\n LOCATION:https://researchseminars.org/talk/FHD3/8/ END:VEVENT BEGIN:VEVENT SUMMARY:Michal Heller (Max Planck Institute for Gravitational Physics) DTSTART:20211213T150000Z DTEND:20211213T160000Z DTSTAMP:20260422T212728Z UID:FHD3/9 DESCRIPTION:Title: Tow ards deriving a gravity dual to complexity\nby Michal Heller (Max Plan ck Institute for Gravitational Physics) as part of Frontiers of Holographi c Duality-3\n\n\nAbstract\nWhat are boundary interpretations of holographi c complexity proposals and what are gravity duals to complexity are import ant open questions. I will discuss two ongoing efforts to answer them\, wh ich are based on searching for a gravity dual of a circuit cost and\, thro ugh minimization of the latter object\, to a gravity dual of bona fide com plexity. Based on 2101.01185 and an ongoing work.\n LOCATION:https://researchseminars.org/talk/FHD3/9/ END:VEVENT BEGIN:VEVENT SUMMARY:Hong Liu (MIT) DTSTART:20211213T160000Z DTEND:20211213T170000Z DTSTAMP:20260422T212728Z UID:FHD3/10 DESCRIPTION:Title: Ca usal connectability between quantum systems and the black hole interior in holographic duality\nby Hong Liu (MIT) as part of Frontiers of Hologr aphic Duality-3\n\n\nAbstract\nIn holographic duality an eternal AdS black hole is described by two copies of the boundary CFT in the thermal field double state. This identification still has many puzzles\, including the b oundary descriptions of the event horizons\, the interiors of the black ho le\, and the singularities. Compounding these mysteries is the fact that\ , while there is no interaction between the CFTs\, observers from them can fall into the black hole and interact. We will address these issues in th is talk. In particular\, we (i) present a boundary formulation of infallin g observers\; (ii) show that in any holographic systems\, a sharp event ho rizon can only emerge in the infinite N limit\; (iii) give an explicit con struction in the boundary theory of an evolution operator for a family of bulk in-falling observers\, making manifest the boundary emergence of the black hole horizons\, the interiors\, and the associated causal structure. \n\nA by-product is a concept called causal connectability\, which is a c riterion for any two quantum systems (which do not necessarily have a know n gravity dual) to have an emergent sharp horizon structure.\n LOCATION:https://researchseminars.org/talk/FHD3/10/ END:VEVENT BEGIN:VEVENT SUMMARY:Hao Geng (Harvard U.) DTSTART:20211214T140000Z DTEND:20211214T150000Z DTSTAMP:20260422T212728Z UID:FHD3/11 DESCRIPTION:Title: En tanglement Islands in Braneworlds\nby Hao Geng (Harvard U.) as part of Frontiers of Holographic Duality-3\n\n\nAbstract\nEntanglement island is a recently emergent concept playing an important role in resolving the bl ack hole information paradox. In these resolution proposals the black hole is coupled to a bath which absorbs the radiation from the black hole and we can calculate the entanglement entropy of the black hole radiation as a function of time by studying the bath. The results are consistent with Pa ge's argument that the entanglement entropy versus time diagram obeys unit arity-- a Page curve. In higher dimensions\, this calculation of the Page curve can be done only in braneworld models. More precisely\, the Karch-Ra ndall braneworld models and for AdS black holes. A closer look at the bra neworld models tells us that the graviton is massive as the massless gravi ton mode is not normalizable. However\, this effect of having a massive gr aviton is induced by coupling the black hole to a bath which is a universa l feature of all the resolution proposals in higher dimensions. Several at tempts to construct entanglement islands for massless gravity using branew orld give us many interesting new setups to study quantum gravity-- includ ing a codimension two holography in AdS (wedge holography) and Page curve for de Sitter radiation. Though these attempts didn't provide us with enta nglement islands for massless gravity in asymptotically AdS spaces. We wil l see that a more careful study tells us that in a large set of situations entanglement islands don't exist in massless gravity theories. In the tal k I will give a complete review of this line of research.\n LOCATION:https://researchseminars.org/talk/FHD3/11/ END:VEVENT BEGIN:VEVENT SUMMARY:Gabor Sarosi (CERN) DTSTART:20211214T150000Z DTEND:20211214T160000Z DTSTAMP:20260422T212728Z UID:FHD3/12 DESCRIPTION:Title: Th e volume of the black hole interior at late times\nby Gabor Sarosi (CE RN) as part of Frontiers of Holographic Duality-3\n\n\nAbstract\nThe volum e of the interior of a two-sided eternal black hole classically grows fore ver. I will show that in JT gravity\, summing the non-perturbative contrib ution of higher topologies leads to a saturation of the volume of the inte rior at times exponential in the entropy of the black hole. I will explain that this is evidence for the conjecture that the size of the interior is related to the complexity of the holographically dual quantum state.\n LOCATION:https://researchseminars.org/talk/FHD3/12/ END:VEVENT BEGIN:VEVENT SUMMARY:Natalia Pinzani-Fokeeva (MIT) DTSTART:20211215T140000Z DTEND:20211215T150000Z DTSTAMP:20260422T212728Z UID:FHD3/13 DESCRIPTION:Title: En strophy and black hole supertranslations\nby Natalia Pinzani-Fokeeva ( MIT) as part of Frontiers of Holographic Duality-3\n\n\nAbstract\nEnstroph y is an approximately conserved quantity in 2+1 dimensional fluid flows th at has dramatic consequences for the phenomenology of nonrelativistic turb ulence: it implies an inverse energy cascade. In this talk\, I will presen t an algorithm on how to construct an enstrophy current for generic fluid flows (relativistic and non). In addition\, I will show how a subset of ce rtain horizon symmetries of 3+1 dimensional AdS black holes also lead to e nstrophy conservation in the dual holographic fluid theory.\n LOCATION:https://researchseminars.org/talk/FHD3/13/ END:VEVENT BEGIN:VEVENT SUMMARY:Jorit Kruthoff (Stanford) DTSTART:20211215T170000Z DTEND:20211215T180000Z DTSTAMP:20260422T212728Z UID:FHD3/14 DESCRIPTION:Title: Gr avity factorized\nby Jorit Kruthoff (Stanford) as part of Frontiers of Holographic Duality-3\n\n\nAbstract\nIn this talk I will discuss models o f two-dimensional gravity that resolve the factorization puzzle and have a discrete spectrum\, whilst retaining a semiclassical description. A novel ty of these models is that they contain non-trivially correlated spacetime branes or\, equivalently\, nonlocal interactions in their action. Demandi ng factorization fixes almost all brane correlators\, and the exact geomet ric expansion of the partition function collapses to only two terms: the b lack hole saddle and a subleading ``half-wormhole'' geometry\, whose sum y ields the desired discrete spectrum. Non-perturbatively\, the correlated b ranes are a certain multitrace interaction and I will show how it results in a factorizing theory with discrete spectrum. I will end with a few comm ents on the relevance of wormholes\, the matrix model implementation and h igher dimensions.\n LOCATION:https://researchseminars.org/talk/FHD3/14/ END:VEVENT BEGIN:VEVENT SUMMARY:Pawel Caputa (Warsaw University) DTSTART:20211216T140000Z DTEND:20211216T150000Z DTSTAMP:20260422T212728Z UID:FHD3/15 DESCRIPTION:Title: Ge ometry of Krylov Complexity\nby Pawel Caputa (Warsaw University) as pa rt of Frontiers of Holographic Duality-3\n\n\nAbstract\nI will describe ge ometric aspect of the operator growth\nand Krylov complexity from a new pe rspective of symmetries and\ncoherent states. As the main examples I will talk about operator\ngrowth and Krylov complexity in the SYK model and in 2d CFTs. Based\non arXiv: 2109.03824 [hep-th] and arXiv: 2110.10519 [hep-t h].\n LOCATION:https://researchseminars.org/talk/FHD3/15/ END:VEVENT BEGIN:VEVENT SUMMARY:Sergey Vernov (MSU) DTSTART:20211216T150000Z DTEND:20211216T160000Z DTSTAMP:20260422T212728Z UID:FHD3/16 DESCRIPTION:Title: No nlocal gravity and F(R) models\nby Sergey Vernov (MSU) as part of Fron tiers of Holographic Duality-3\n\nAbstract: TBA\n LOCATION:https://researchseminars.org/talk/FHD3/16/ END:VEVENT BEGIN:VEVENT SUMMARY:Niko Jokela (University of Helsinki) DTSTART:20211217T140000Z DTEND:20211217T150000Z DTSTAMP:20260422T212728Z UID:FHD3/17 DESCRIPTION:Title: NI CER view on holographic QCD\nby Niko Jokela (University of Helsinki) a s part of Frontiers of Holographic Duality-3\n\n\nAbstract\nHolographic te chniques are particularly fit to analyzing matter at extreme conditions wh ere QCD matter is strongly coupled. Combining predictions of the holograph ic model with state-of-the-art effective field theory models of nuclear ma tter\, I construct a family of feasible "hybrid" equations of state which cover both the quark matter and nuclear matter phases. The model predicts\ , among other things\, that the NICER's radius measurement is fully consis tent with the absence of quark matter inside massive neutron stars. I also briefly overview some results that holography has achieved on general lev el as well as discuss how I foresee holography contributing to compact-sta r physics in the coming years\n LOCATION:https://researchseminars.org/talk/FHD3/17/ END:VEVENT BEGIN:VEVENT SUMMARY:Kristina Rannu (PFUR) DTSTART:20211217T150000Z DTEND:20211217T160000Z DTSTAMP:20260422T212728Z UID:FHD3/18 DESCRIPTION:Title: An isotropic solutions for a holographic light-quark model with an external m agnetic field\nby Kristina Rannu (PFUR) as part of Frontiers of Hologr aphic Duality-3\n\nAbstract: TBA\n LOCATION:https://researchseminars.org/talk/FHD3/18/ END:VEVENT END:VCALENDAR