Name: From Quantum Gravity to Cosmology
Start: 2026-09-28T09:15:00+09:00
End: 2026-10-02T21:20:00+09:00
Location: Kavli IPMU

Monday, 28 September 2026

09:45 Opening Remarks
Opening Remarks
09:45 - 10:00
Room: Lecture Hall
10:00 Invited Talks
10:00 - 10:35
Room: Lecture Hall
Contributions

10:00 Issues on quantum gravity from the perspective of inflationary cosmology - Jun'ichi Yokoyama
10:35 Coffee Break
Coffee Break
10:35 - 11:00
11:00 Invited Talks
11:00 - 12:40
Room: Lecture Hall
Contributions

11:00 Black hole resonances and cosmological particle production: an exact WKB approach - Ryo Namba

11:50 Locality of soft dressings: inflationary perturbations and the infrared-finite S-matrix - Yuko Urakawa
12:40 Lunch
Lunch
12:40 - 14:00

14:00 Survey on AI in physics research

14:00 - 14:10
Room: Lecture Hall
14:10 Invited Talks
14:10 - 15:00
Room: Lecture Hall
Contributions

14:10 Quantum spacetime without quantizing gravity - Misao Sasaki
15:00 Coffee Break
Coffee Break
15:00 - 15:45
Room: Lecture Hall
15:45 Contributed Talks
15:45 - 16:45
Room: Lecture Hall
Contributions

15:45 High Frequency Spectrum of Primordial Gravitational Waves - Kamil Mudrunka

16:00 Rolling Downhill, Averaging Uphill: Nonlinear Inflation on the Lattice - Pankaj Saha

16:15 Preheating in Einstein-Cartan Higgs inflation - Minxi He

16:30 Consistency conditions and gravitational-wave probes of spacetime symmetries - Nils A Nilsson
16:45 Discussion
16:45 - 17:45
Room: Lecture Hall
Contributions

16:45 Discussion session: Early Universe
Tuesday, 29 September 2026
09:30 Invited Talks
09:30 - 10:20
Room: Lecture Hall
Contributions

09:30 Hořava-Lifshitz Quantum Cosmology - Shinji Mukohyama
10:20 Coffee Break
Coffee Break
10:20 - 11:00
Room: Lecture Hall
11:00 Invited Talks
11:00 - 12:40
Room: Lecture Hall
Contributions

11:00 Primordial Signatures of the Quantum Bounce: The robustness of analytic approximations near the bounce in hybrid loop quantum cosmology - Kristina Giesel

11:50 Gravitational wave signals from area metric gravity - Bianca Dittrich
12:40 Lunch
Lunch
12:40 - 14:10
14:10 Invited Talks
14:10 - 15:00
Room: Lecture Hall
Contributions

14:10 Emergent spacetime and a quantum gravity explanation of the dark sector - Daniele Oriti
15:00 Coffee Break
Coffee Break
15:00 - 15:45
15:45 Contributed Talks
15:45 - 17:00
Room: Lecture Hall
Contributions

15:45 Quantum Gravity Corrections: From Background Dynamics to Cosmological Perturbations - Hongguang Liu

16:00 Inflationary Attractors from Canonical Quantum Gravity - Tatsuya Daniel

16:15 Volume as a Clock: Observers and Topology Change in Quantum Gravity - Farbod Sayyed Rassouli

16:30 Hearing the Shape of Spacetime Using Nonlinearities in Causal Set Theory - Cristiano Sampaio

16:45 Emergent Schrödinger Symmetry in Matter-Coupled Black Hole Minisuperspaces - Taishi Sano
17:00 Discussion
17:00 - 18:00
Room: Lecture Hall
Contributions

17:00 Discussion Session: Quantum Gravity
Wednesday, 30 September 2026
09:30 Invited Talks
09:30 - 10:20
Room: Lecture Hall
Contributions

09:30 Is Dark Energy Dynamical in the DESI Era? - Salvatore Capozziello
10:20 Coffee Break
Coffee Break
10:20 - 11:00
Room: Lecture Hall
11:00 Invited Talks
11:00 - 12:40
Room: Lecture Hall
Contributions

11:00 Phantom crossing from the Standard Model and General Relativity - Antonino Marcianò

11:50 Connecting Quantum Gravity, Effective Theory and Cosmological Observations - Benjamin Bose
12:40 Lunch
Lunch
12:40 - 14:10
Room: Lecture Hall

14:10 Conference Photo

14:10 - 14:15
Room: Entrance Staircase, 1st floor
14:15 Contributed Talks
14:15 - 15:00
Room: Lecture Hall
Contributions

14:15 3-form dark energy and cosmic birefringence - Tucker Manton

14:30 What can solve the Cosmological Constant Problem? - Benjamin Muntz

14:45 Phantom crossing and suppressed cosmic growth in a coupled Galileon dark-energy model with a scalar potential - Masroor Pookkillath
15:00 Coffee Break
Coffee Break
15:00 - 15:30
15:30 Invited Talks
15:30 - 16:30
Room: Lecture Hall
Contributions

15:30 The Dark Universe: from Cosmology to the Laboratory (IPMU colloquium) - Clare Burrage
16:30 Contributed Talks
16:30 - 17:00
Room: Lecture Hall
Contributions

16:30 Cosmological Uncertainty Relation and Late-Universe Acceleration - Savvas Koushiappas

16:45 New paths towards the first detection of primordial non-Gaussianities from large-scale structure - Minh Nguyen
17:00 Discussion
17:00 - 18:00
Room: Lecture Hall
Contributions

17:00 Discussion session: Dark Sector
19:30 Workshop Dinner

19:30 - 21:10
Thursday, 1 October 2026
09:30 Invited Talks
09:30 - 10:20
Room: Lecture Hall
Contributions

09:30 Making Quantum Gravity Observable: From the Big Bang to Black Holes and Cosmic Horizons. - Niayesh Afshordi
10:20 Coffee Break
Coffee Break
10:20 - 11:00
Room: Lecture Hall
11:00 Invited Talks
11:00 - 11:50
Room: Lecture Hall
Contributions

11:00 Formalizing QFT and Quantum Gravity via Homotopy Algebras - Olaf Hohm
11:50 Contributed Talks
11:50 - 12:50
Room: Lecture Hall
Contributions

11:50 Kaluza-Klein Perturbation Theory from Exceptional Field Theory - Camilla Lavino

12:05 Gravitational-Wave Imprints of Primordial Black Hole Evaporation - Xin-Chen He

12:20 The Knitting Mechanism: From Quantum Gravity to the Emergence of Our Universe - Yoshiyuki Watabiki

12:35 Cosmological correlators and discrete kinematic flow on complex Hartle-Hawking saddles - Vikramaditya Mondal
12:50 Lunch Break
Lunch Break
12:50 - 14:20
Room: Lecture Hall
Friday, 2 October 2026
09:30 Invited Talks
09:30 - 10:20
Room: Lecture Hall
Contributions

09:30 Cosmology in the string theory landscape and swampland - Viktoria Venken
10:20 Coffee Break
Coffee Break
10:20 - 11:00
Room: Lecture Hall
11:00 Invited Talks
11:00 - 12:40
Room: Lecture Hall
Contributions

11:00 Emergent Metric Spacetime and Early Universe Cosmology from the BFSS Matrix Model - Robert Brandenberger

11:50 Emergence of (3+1)-dimensional expanding spacetime from the Lorentzian type IIB matrix model with deformations - Asato Tsuchiya
12:40 Lunch Break
Lunch Break
12:40 - 14:10
Room: Lecture Hall
14:10 Invited Talks
14:10 - 15:00
Room: Lecture Hall
Contributions

14:10 Emergent droplet geometry from multi-Matrix Quantum Mechanics - Suddhasattwa Brahma
15:00 Coffee Break
Coffee Break
15:00 - 15:45
Room: Lecture Hall
15:45 Contributed Talks
15:45 - 16:15
Room: Lecture Hall
Contributions

15:45 Regularized Master-Field Approximation for Mass-Deformed Supersymmetric Yang–Mills Matrix Models - Reishi Maeta

16:00 Emergent Spacetime and the Arrow of Time from Non-Hermitian Effective Field Theory of Holographic Projections - Yutaka Tamaura
16:15 Discussion
16:15 - 17:15
Room: Lecture Hall
Contributions

16:15 Discussion session: Challenges and Opportunities
17:15 Closing Remarks
Closing Remarks
17:15 - 17:25
Room: Lecture Hall