photo by R.-P. Kostecki
Geometry of classical and quantum space-times
Jerzy Lewandowski Memorial Conference
September 15–19, 2025
Banach Center, Institute of Mathematics, Polish Academy of Sciences, Warszawa, Poland
& Faculty of Physics, University of Warsaw, Warszawa, Poland
photo by R.-P. Kostecki |
| Invited speakers:
Schedule and programme: Full programme in PDF, including the book of abstracts. Hover the cursor over the names of the speakers in the timetable to see the titles of the talks:
* – online talk Talks: Robert Alicki – Cosmology without inflaton Abhay Ashtekar – Black hole thermodynamics, arbitrarily far from equilibrium Fernando Barbero – Some reflections on hamiltonians and GR Ingemar Bengtsson – A discrete structure in Hilbert space: constructions Luca Cafaro – On the gravitational collapse in loop quantum gravity José M. Cidade Mourão – Momentum space quantization for cotangent bundles of symmetric spaces and coherent state transforms Piotr T. Chruściel – Hyperbolic mass in 2 + 1 dimensions Alex Colling – Symmetries of extremal horizons Marek Demiański – Discovering black holes Maciej Dunajski – Einstein–Maxwell gravitational instantons Jonathan Engle – Spinfoams and Ponzano–Regge Christian Fleischhack – Jurek’s uniqueness Kristina Giesel – Gravity quantised Jerzy Kijowski – What is gravity? (Can we extrapolate the validity of a successful physical theory by 20 orders of magnitude?) Maciej Kolanowski – Quantum (near) extremal black holes Mikołaj Korzyński – Redshift and position drift in cosmology Ryshard-Pavel Kostecki – Topos-theoretic extension of vacuum algebraic quantum field theory over curved space-times Jerzy Kowalski-Glikman – From corner proposal to emergence of the area law David Kubizňák – On a lower-dimensional Killing vector origin of irreducible Killing tensors Jorma Louko – Waiting around for Unruh James Lucietti – Intrinsic rigidity of extremal horizons and black hole uniqueness Yǒnggé Mǎ – Loop quantum gravity effects on forming a black hole: in collaboration with Jurek Lewandowski Ilkka Mäkinen – Scalar curvature operator: applications to models of LQG dynamics Lionel Mason – Celestial holography from twistor space Guillermo A. Mena Marugán – A hamiltonian formalism for perturbed (interiors of) nonrotating black holes Maciej Ossowski – Topologically non-trivial black holes and their spacetimes Tomasz Pawłowski – Propagation of light over (loop) quantum universe Roger Penrose – Gravitational radiation and dark matter with positive Λ István Rácz – Construction of hyperboloidal initial data without logarithmic singularities Carlo Rovelli – Should we expect a 20μg particle? Hanno Sahlmann – Why loop quantum gravity with selfdual variables is hard George A. J. Sparling – Signposts to the future: the legacy of Jerzy Lewandowski Simone Speziale – Symmetries of non-expanding horizons and general null hypersurfaces Arman Taghavi-Chabert – Cauchy–Riemann geometry in general relativity: a brief survey Yaser Tavakoli – Fermions in loop quantum cosmology Thomas Thiemann – Canonical quantum gravity Madhavan Varadarajan – Hilbert space non-separability as a virtue Wolfgang Wieland – Local subsystems on the light front: luminosity and local amplitudes Cōng Zhāng – General covariance in effective quantum black hole models Speakers of the memorial session: Abhay Ashtekar Fernando Barbero Marek Demiański Patryk Mach Carlo Rovelli Hanno Sahlmann Posters: Hristu Culetu – Geodesics in a static spacetime applied in microphysics Grzegorz Czelusta – Spin networks on quantum computers Igor Kanatchikov – On the quantum gravitational origin of MOND from quantum spin connection foam Patryk Mieszkalski – Dual differential geometry Hugo A. Morales-Técotl – General covariance in effective models motivated by loop quantum gravity Antonio Panassiti – On the Cauchy horizon (in)stability of regular black holes Dinner: On 17.09.2025 (Wednesday), starting at 19:00, in “Wiesz co zjesz” restaurant, at Plac Konstytucji 1 (see the map below). Conference poster: Poster of the conference (A3 size in .pdf format). Conference venue: Banach Center, Institute of Mathematics of the Polish Academy of Sciences address: Śniadeckich 8 (entry from: Koszykowa 53), Warszawa, Poland. All talks will be held in the room 321. Note: Due to construction works inside Banach Center, the main entry, from Śniadeckich street, is currently closed, and the only entry is from the Koszykowa street, as indicated by the red arrows on the map below. Upon entering Banach Center, turn left immediately and enter the reception area through the small corridor. There you will need to sign up in the Banach Center’s entrance book. The conference room (#321) is on the third floor, which is accessible via the staircase. If you require assistance, then please inform the receptionist (or contact us) about it. The way towards the conference room will be marked by signs.  See jakdojade.pl/warszawa for the best up-to-date public transportation planner for Warszawa. The nearby tram and bus stops are called “Plac Konstytucji”. There is also a nearby “Politechnika” metro station, located 5 minutes by walk towards south from Plac Konstytucji. Online registration: Online registration (for those participants who are not invited speakers) was open from July 15, 2025 to August 8, 2025 August 15, 2025, anywhere on Earth. Notifications regarding poster/talk acceptance were sent on August 22, 2025. Post-conference publication: All speakers, as well as selected poster presenters, are invited to submit their papers to the peer-reviewed article collection in the «General Relativity and Gravitation» journal (editors: Kristina Giesel, Wojciech Kamiński, Ryshard-Pavel Kostecki). Early submission deadline: 31 January 2026. Final submission deadline: 31 March 2026. More news soon. Organising committee:
Additional materials (under construction): Memorials:
last update: October 2, 2025; 20:42 CET. |
