YITP Workshop

Recent Progress of Quantum Cosmology

November 8 - November 10, 2021
Yukawa Institute for Theoretical Physics, Kyoto University

Program (November 8 - November 10)

This is the final program for RPQC 2021. (November 6, 2021)

Japan (JST)	10:00-11:00	11:00-12:00	17:00-18:00	18:00-19:00	22:00-23:00	23:00-24:00
Central Euro (CET)	2:00-3:00	3:00-4:00	9:00-10:00	10:00-11:00	14:00-15:00	15:00-16:00
West Euro (WET)	1:00-2:00	2:00-3:00	8:00-9:00	9:00-10:00	13:00-14:00	14:00-15:00
US East (EST)	20:00-21:00 (-1day)	21:00-22:00 (-1day)	3:00-4:00	4:00-5:00	8:00-9:00	9:00-10:00
US West (PST)	17:00-18:00 (-1day)	18:00-19:00 (-1day)	0:00-1:00	1:00-2:00	5:00-6:00	6:00-7:00

Nov. 8 (Monday)	R. Brandenberger	M. Bojowald	J. Nishimura J. Kristiano T. Hasegawa	S. Cespedes J. Mielczarek F. R. Klinkhamer	R. Loll	J. Quintin E. Tanin S. Gielen
Nov. 9 (Tuesday)	A. Ashtekar	Y. Nomura	T. Hayashi I. Koga J. H. Kwapisz	P. Peter	N. G. Turok	D. D. Baumann
Nov. 10 (Wednesday)	A. Vilenkin	J. B. Hartle	J. Lehners

November 8 (Mon)

The indicated time refers to LOCAL TIME in Japan (JST)

Morning Session (50+10 min., Chair: Hiroki Matsui)

9:50-10:00 Opening Address by Hiroki Matsui
10:00-11:00 Robert Brandenberger (McGill U.)
"Alternatives to Inflation from Quantum Cosmology" (Video)
11:00-12:00 Martin Bojowald (Penn State U.)
"Space and time in quantum cosmology" (Video)

Afternoon Session (15+5 min., Chair: Atsushi Naruko) (Video)

17:00-17:20 Jun Nishimura (KEK, Graduate U. Adv. Studies)
"The emergence of space-time in a matrix model formulation of superstring theory"
17:20-17:40 Jason Kristiano (Tokyo U., RESCEU)
"Theoretical bound on primordial non-Gaussianity in single field inflation"
17:40-18:00 Taiga Hasegawa (Yamaguchi U.)
"Eisenhart-Duval lift for minisuperspace quantum cosmology"
18:00-18:20 Sebastian Cespedes (Madrid, IFT and Madrid, Autonoma U.)
"Lorentzian vacuum transitions: Open or closed universes?"
18:20-18:40 Jakub Mielczarek (Jagiellonian U.)
"Simulating quantum cosmology on a quantum computer"
18:40-19:00 Frans R. Klinkhamer (KIT, Karlsruhe)
"Emergent spacetime from the master field of the IIB matrix model"

Night Session (50+10 min., 15+5 min., Chair: Hiroki Matsui)

22:00-23:00 Renate Loll (Nijmegen U., IMAPP)
"De Sitter Space from first principles" (Video)
23:00-23:20 Jerome Quintin (Max Planck Inst.)
"Cosmological Consequences of a Principle of Finite Amplitudes"
23:20-23:40 Erwin H. Tanin (Johns Hopkins U.)
"Thermal Perturbations from Cosmological Constant Relaxations"
23:40-24:00 Steffen Gielen (Sheffield U.)
"Unitarity, clock dependence and quantum recollapse in quantum cosmology" (Video)

November 9 (Tue)

Morning Session (50+10 min., Chair: Shinji Mukohyama)

10:00-11:00 Abhay Ashtekar (Penn State U.)
"Probing the Big Bang with Quantum Fields" (Video)
11:00-12:00 Yasunori Nomura (UC, Berkeley)
"Entanglement islands in the eternally inflating multiverse" (Video)

Afternoon Session (15+5 min., 50+10 min., Chair: Atsushi Naruko) (Video)

17:00-17:20 Takumi Hayashi (Tokyo U., RESCEU)
"Vacuum decay with the Lorentzian path integral"
17:20-17:40 Issei Koga (Kyushu U.)
"The beginning of an inflationary universe out of a Kerr-AdS_5 black hole"
17:40-18:00 Jan Henryk Kwapisz (Warsaw U.)
"Is asymptotically safe inflation eternal ?"
18:00-19:00 Patrick Peter (ILP, Paris)
"Unitarily inequivalent quantum cosmological bouncing models" (Video)

Night Session (50+10 min., Chair: Karim Noui)

22:00-23:00 Neil G. Turok (Perimeter Inst.)
"Cancelling the vacuum energy and Weyl anomaly in the standard model with dimension zero scalarss" (Video)
23:00-24:00 Daniel D. Baumann (Amsterdam U.)
"The Cosmological Bootstrap" (Video)

November 10 (Wed)

Morning Session (50+10 min., Chair: Kei-ichi Maeda)

10:00-11:00 Alexander Vilenkin (Tufts U.)
"Tunneling wave function of the universe" (Video)
11:00-12:00 James B. Hartle (UC, Santa Barbara)
"The Impact of Cosmology on Quantum Mechanicse" (Video)

Afternoon Session (50+10 min., Chair: Shinji Mukohyama)

17:00-18:00 Jean-Luc Lehners (Max Planck Inst.)
"Recent developments in the minisuperspace no-boundary proposal" (Video)
18:00-18:10 Closing Address by Hiroki Matsui