KEKCosmo 2025 — Program

Frontiers of Cosmology: From the Early Universe to Observational Tensions

2–5 March · KEK Tsukuba

Lectures — Day 1 (Monday, 2 March)
TimeSessionRoom
09:50–10:00 Opening Seminar Hall
10:00–12:00
Quantum measurement and Bell inequality 1
Izumi Tsutsui
 Seminar Hall
13:00–15:00
Cosmological Tensions 1
Shi-Fan Chen
 Seminar Hall
15:30–17:30
Pulsar Timing Arrays 1
Atsushi Nishizawa
 Seminar Hall
Lectures — Day 2 (Tuesday, 3 March)
TimeSessionRoom
10:00–12:00
Quantum measurement and Bell inequality 2
Izumi Tsutsui
 Seminar Hall
12:50–14:50
Cosmological Tensions 2
Shi-Fan Chen
 Seminar Hall
15:10–17:10
Pulsar Timing Arrays 2
Atsushi Nishizawa
 Seminar Hall
Workshop — Day 1 (Wednesday, 4 March)
TimeSessionRoom
09:10
Opening
 Seminar Hall
09:15–10:15
The BAO-CMB Tension and Implications for Inflation
Elisa Ferreira
 Seminar Hall
10:15–11:35
Short talks (20 mins × 4)
10:15–10:35 Quantum and classical properties of interacting primordial inhomogeneities — Amaury Micheli (RIKEN)
10:35–10:55 Quantum Nature of Primordial Gravitational Waves in Hořava-Lifshitz Gravity — Hiroki Matsui (Nihon U)
10:55–11:15 The Imprints of Primordial Non-Gaussianity on the Scalar-Induced Gravitational-Wave Background — Jun-Peng Li (NAOJ)
11:15–11:35 Quantum Algorithm for the Fokker-Planck Equation in Cosmology — Hou Heng Leong (KEK/SOKENDAI)
Seminar Hall
13:00–14:00
Invited talk: Frontiers of CMB measurements and cosmological tests of Bell inequality
Yuji Chinone
 Seminar Hall
14:00–15:00
Short talks (20 mins × 3)
14:00–14:20 Towards the prediction of primordial-black-hole clusters — Danilo Artigas (YITP)
14:20–14:40 Parity-violating scalar trispectrum from helical primordial magnetic fields — Yura Kaito (Nagoya U)
14:40–15:00 Phenomenological and Gravitational Properties of a Monopole-Domain Wall System — Yu Komiya (YITP)
Seminar Hall
15:30–16:30
Causality and Kramers-Kronig Relations in Gravitational Lensing
Teruaki Suyama
 Seminar Hall
16:30–17:30
Short talks (20 mins × 3)
16:30–16:50 Toward estimating supermassive Black Hole Binary Distributions via Higher-Order Statistics of the Gravitational Wave Background — Hinano Hisamatsu (Chiba U)
16:50–17:10 Resolving individual signals in the presence of stochastic background in future pulsar timing arrays. — Kazuya Furusawa (Nagoya U)
17:10–17:30 Testing the standard structure growth with HSC-Y3 cosmic shear data and CMB data: Implications for S8 tension — Ryo Terasawa (IPMU)
Seminar Hall
Evening
Banquet
Workshop — Day 2 (Thursday, 5 March)
TimeSessionRoom
09:10–10:10
Intrinsic galaxy alignment cosmology
Teppei Okumura
 Seminar Hall
10:10–11:10
Short talks (20 mins × 3)
10:10–10:30 Probing Light Dark Matter with Cosmic Gravitational Focusing — Liang Tan (TDLI)
10:30–10:50 Constrain the Dark Matter physics through weak lensing observation — Lei Zu (NAOJ)
10:50–11:10 Exponential Quintessence Model: Analytical Quantification of the Fine-Tuning Problem in dark energy — Naoto Maki (NAOJ/Sokendai)
Seminar Hall
12:45–13:45
Invited talk: TBA
Kentaro Kasai
 Seminar Hall
13:45–14:45
Invited talk: TBAs
Tatsumi Nitta
 Seminar Hall
15:00–16:00
Gravitational waves from coalescing supermassive black holes in a galaxy and AGN formation model based on the CDM cosmology
Masahiro Nagashima
 Seminar Hall