Isolated horizons and near horizon geometries, loop quantum gravity,
CR structures and spacetimes, Einstein equations and the twistor equation

Conference on the occasion of Jerzy Lewandowski's 60^th birthday (Jurekfest)

September 16-20, 2019
Faculty of Physics, University of Warsaw, Warszawa, Poland

photo by Jing Li

Invited speakers: (Titles link to slides of the talks in PDF format, opening in the same browser's tab. Film icons link to video recordings of talks stored on youtube, and opening in the new browser's tab.) Robert Alicki - Superradiance of quantum fields: From dry friction to black hole radiation   Abhay Ashtekar - Compact binary coalescences and the BMS group   Mehdi Assanioussi - Graph coherent states in loop quantum gravity   Benjamin Bahr - Operator spin foam models: coarse graining and entanglement entropy   Fernando Barbero - The geometric exegesis of the Dirac algorithm   Ingemar Bengtsson - A discrete structure in Hilbert space   Norbert Bodendorfer - Renormalisation in LQC with SU(1,1) techniques   Piotr Chruściel - Positivity of energy for asymptotically hyperbolic manifolds   Andrea Dapor - Effective dynamics of loop quantum gravity: Bouncing black holes and gravitational phonons   Denis Dobkowski-Ryłko - Isolated horizons, near horizon geometries and the Petrov type D equation   Maciej Dunajski - Conformally isometric embeddings and Hawking temperature   Jonathan Engle - Uniqueness of kinematics and minimal dynamics in loop quantum cosmology   Christian Fleischhack - Uniqueness   Kristina Giesel - Reduced loop quantum gravity with scalar fields Joshua Goldberg - Memoir Jacek Jezierski - Geometry of null hypersurfaces   Jerzy Jurkiewicz - Definition of holonomies in the model of causal dynamical triangulations   Jerzy Kijowski - Essence of gravity theory and Einstein's attempts to unify it with electromagnetism   Marcin Kisielowski - On the relation between loop quantum gravity and spin-foam models   John Klauder - The real quantum gravity   Mikołaj Korzyński - Weighing the spacetime along the line of sight   Ryszard P. Kostecki - Geometrisation of quantum theory beyond pure states and Hilbert spaces   Jerzy Kowalski-Glikman - Semiclassical quantum gravity and quantum deformed effective theories   Zygmunt Lalak - Opening Felipe Leitner - About the Kohn-Dirac operator on CR manifolds   Chun-Yen Lin - Elementary relational observables with quantum reference frames   Jorma Louko - Second law protection theorem for Lorentz-violating black holes   Yongge Ma - Isolated horizon entropy in loop quantum gravity   Edward Malec - Stationary tori in general-relativistic hydrodynamics: recent developments, their applications, open questions Lionel Mason - Gravitational scattering on plane waves and the double copy   Guillermo Mena Marugán - Primordial fluctuations in loop quantum cosmology   José Mourão - Non-uniqueness of quantization, complex time evolution and generalized coherent state transforms   Ezra T. Newman - Standard classical mechanics sitting in standard classical GR   Paweł Nurowski - Twistor geometry of rolling bodies   Tomasz Pawłowski - On the dynamics of loop quantum universe   Sir Roger Penrose - The palatial twistor approach to Einstein lambda vacuums   Jorge Pullin - Recent results in spherically symmetric loop quantum gravity   Carlo Rovelli - Dark matter from quantum gravity   Hanno Sahlmann - Walking in Jurek's garden   George A.J. Sparling - The interplay of symplectic and projective geometry in the context of plane wave spacetimes   Simone Speziale - The asymptotic analysis of the lorentzian KKL vertex of arbitrary valence   Jacek Tafel - The Penrose inequality for the perturbed Schwarzschild initial data   Thomas Thiemann - Quantum cosmological backreactions Posters: Krzysztof Andrzejewski - Charges of conformal symmetries and their applications in plane gravitational waves Paweł Ciosmak - Super quantum Airy structures Maciej Kolanowski - (Anti-)evaporation of Schwarzschild-de Sitter black holes revisited Colin MacLaurin - Cosmic cable Lukáš Polcar - Lie series method in a perturbed black hole spacetime Carlos I. Pérez-Sánchez - Schwinger-Dyson equations of tensor field theory as Tutte-like equations in dimension 3   Conference poster: Ready-to-print version (A2 size in PNG file). Schedule and programme: Full programme in PDF (including the book of abstracts). Monday 16.09 Tuesday 17.09 Wednesday 18.09 Thursday 19.09 Friday 20.09 8:30-8:45 Registration 8:45-9:00 LalakOpening 9:00-9:40 AshtekarCompact binary coalescences and the BMS group ThiemannQuantum cosmological backreactions MaIsolated horizon entropy in loop quantum gravity PenroseThe palatial twistor approach to Einstein lambda vacuums Mena MarugánPrimordial fluctuations in loop quantum cosmology 9:40-10:20 ChruścielPositivity of energy for asymptotically hyperbolic manifolds BarberoThe geometric exegesis of the Dirac algorithm RovelliDark matter from quantum gravity SparlingThe interplay of symplectic and projective geometry in the context of plane wave spacetimes PullinRecent results in spherically symmetric loop quantum gravity 10:20-10:50 Coffee Break Coffee Break Coffee Break Coffee Break Coffee Break 10:50-11:30 LeitnerAbout the Kohn-Dirac operator on CR manifolds SahlmannWalking in Jurek's garden KlauderThe real quantum gravity AssanioussiGraph coherent states in loop quantum gravity JurkiewiczDefinition of holonomies in the model of causal dynamical triangulations 11:30-12:10 NewmanStandard classical mechanics sitting in standard classical GR GieselReduced loop quantum gravity with scalar fields LoukoSecond law protection theorem for Lorentz-violating black holes DunajskiConformally isometric embeddings and Hawking temperature MalecStationary tori in general-relativistic hydrodynamics: recent developments, their applications, open questions 12:10-14:00 Lunch Break Lunch Break Lunch Break Lunch Break Lunch Break 14:00-14:40 TafelThe Penrose inequality for the perturbed Schwarzschild initial data MourãoNon-uniqueness of quantization, complex time evolution and generalized coherent state transforms BengtssonA discrete structure in Hilbert space NurowskiTwistor geometry of rolling bodies DaporEffective dynamics of loop quantum gravity: Bouncing black holes and gravitational phonons 14:40-15:20 KijowskiEssence of gravity theory and Einstein's attempts to unify it with electromagnetism PawłowskiOn the dynamics of loop quantum universe AlickiSuperradiance of quantum fields: From dry friction to black hole radiation Dobkowski-RyłkoIsolated horizons, near horizon geometries and the Petrov type D equation BodendorferRenormalisation in LQC with SU(1,1) techniques 15:20-15:50 Coffee Break Coffee Break Coffee Break Coffee Break Coffee Break 15:50-16:30 Kowalski-GlikmanSemiclassical quantum gravity and quantum deformed effective theories FleischhackUniqueness BahrOperator spin foam models: coarse graining and entanglement entropy KosteckiGeometrisation of quantum theory beyond pure states and Hilbert spaces 16:30-17:10 JezierskiGeometry of null hypersurfaces EngleUniqueness of kinematics and minimal dynamics in loop quantum cosmology KisielowskiOn the relation between loop quantum gravity and spin-foam models MasonGravitational scattering on plane waves and the double copy 17:10-17:50 KorzyńskiWeighing the spacetime along the line of sight LinElementary relational observables with quantum reference frames SpezialeThe asymptotic analysis of the lorentzian KKL vertex of arbitrary valence Evening Dinner GoldbergMemoir Conference venue: room #0.06, Faculty of Physics, University of Warsaw address: Pasteura 5 street, Warszawa, Poland. Organising committee: Denis Dobkowski-Ryłko (denis.dobkowski-rylko at fuw.edu.pl) Wojciech Kamiński (wkaminsk at fuw.edu.pl) Ryszard Paweł Kostecki (kostecki at fuw.edu.pl) Andrzej Okołów (oko at fuw.edu.pl) Adam Szereszewski (aszer at fuw.edu.pl) Organising institution: Financial support: last update of this page: March 3, 2020; 14:15 CET.