Shi-Fan Chen
Columbia University
About the Workshop
The workshop Frontiers of Cosmology: From the Early Universe to Observational Tensions (KEK Cosmo 2025) brings together researchers from cosmology, gravity, particle physics, and quantum information to explore fundamental questions about the early Universe and the latest observations, including current cosmological tensions. The event will begin with two days of foundational lectures covering topics such as gravitational-wave observations with pulsar timing arrays, cosmological tensions, and quantum information. These will be followed by a two-day workshop focusing on related themes introduced in the lectures. The primary goal is to foster collaboration across disciplines and generations, connecting theoretical models with observational data and emerging computational tools to shape the future of precision cosmology.
The workshop also aims to provide young researchers with opportunities to learn about cutting-edge topics and present their own work. The workshop will be held in person only.
Topics
- Cosmological tensions
- High frequency Gravitational Waves
- Gravitational Lensing
- Quantum Measurements
- Pulsar Timing Arrays
Invited Speakers
Atsushi Nishizawa
Hiroshima University
Izumi Tsutsui
KEK
Yuji Chinone
KEK
Elisa Ferreira
IPMU
Kentaro Kasai
ICRR
Masahiro Nagashima
Bunkyo University
Tatsumi Nitta
KEK
Teppei Okumura
ASIAA
Teruaki Suyama
Institute of Science Tokyo
Program
Detailed program is HERE.
A print friendly program is HERE.
Banquet
The Banquet for the workshop will be held at the workshop center on Wednesday, March 4.
Workshop Fees
- Registration fee: ¥1,000.
- Banquet fee:
- ¥3,500 for students
- ¥5,500 for others
- Please pay the exact amount in cash at the registration desk.
Deadlines
Deadline for requesting VISA support: January 05, 2026
Deadline for applying travel support: February 02, 2026
Deadline for abstract submission: February 02, 2026
Registration deadline: February 19, 2026
Registration Procedures
Procedures for Registration （日本語版あり）
Inquiries
Ms. Tomoko Numata, Secretary, Theory Center, IPNS, KEK
email: tomokon[at]post.kek.jp
Venue
Seminar Hall on the ground floor at Building 3 (San-Go-Kan), K03, KEK Tsukuba Campus. (Map)
Bus: Narita Airport ⇄ Tsukuba Center
Bus: Tsukuba Center ⇄ KEK Bus Stop
Walk: KEK Bus Stop → Bldg. 3 (K03, San-Go-Kan)
To find the best route to Tsukuba Station, try: https://world.jorudan.co.jp/mln/en/
For local dining and more: https://www2.kek.jp/rso/eng/Map/Restaurantl.html
Other Information
- Please be aware of fraudulent emails requesting personal information or financial details in exchange for accommodation. We will never ask for such information. If you receive a suspicious email, please do not reply.
- If you need a VISA to visit Japan, please see details in Travel Support.
- Weather in Tsukuba, Ibaraki Southern Region
Organizers
- Yuko Urakawa (KEK, Chair)
- Kazuyuki Akitsu (KEK)
- Kazunori Kohri (NAOJ)
- Takahiko Matsubara (KEK)
- Shin'ichi Nojiri (KEK)
- Ippei Obata (KEK)
- Pankaj Saha (KEK)
Sponsors
- KEK Theory Center
- JST FOREST Program under Contract No. JPMJFR222Y (Y. Urakawa)
- Grant-in-Aid for Scientific Research under Contract JP21KK0050, JP23K25873 (Y. Urakawa)
