One day workshop on High Frequency Gravitational Waves

Date: August 7th (Thursday) , 2025 Place: KEK Tsukuba campus, Research main building 1F Conference Room 1 # Please just come to the main entrance of Research main bulding, then you will find the way.

This one-day workshop focuses on high-frequency gravitational waves, ranging from kHz to GHz. With growing interest in probing the early universe through novel experimental techniques, it brings together both experimental and theoretical researchers to explore the implications of high-frequency gravitational waves for reheating, primordial black holes (PBHs), and the quantum aspects of the early universe. The aim is to foster interdisciplinary dialogue and identify future directions in this rapidly developing field.

Program
Chair: Yuko Urakawa

10:30 – 11:00 Akito Kusaka (The University of Tokyo)

High-Frequency Gravitational Wave Experiments (Microwave)

11:00 – 11:30 Kentaro Komori (The University of Tokyo)

High-Frequency Gravitational Wave Experiments (Laser Interferometry)

(Lunch time)

Chair: Kyohei Mukaida

13:00 – 14:00 Kazunori Nakayama (Tohoku University)
High-Frequency Gravitational Waves and Reheating

14:00 – 15:00 Yuichiro Tada (Rikkyo University)

High-Frequency Gravitational Waves and Primordial Black Holes

Chair: Yuko Urakawa

15:15 – 16:15 Hiroki Takeda (Kyoto University)

High-Frequency Gravitational Waves and Decoherence

If you would like to participate in this workshop, please register from here.
We will close the registration form once the maximum capacity is reached. (As of July 28th, we can only accept 4 more registrants due to capacity limitations.)

Travel support will be provided upon request; however, we may not be able to accommodate all applications. If you wish to apply for travel support, please complete your registration by August 1.

The registration is now closed due to the capacity limitations.

Organizers:

Masaya Hasegawa (KEK QUP), Akito Kusaka (The University of Tokyo), Kyohei Mukaida (KEK), Kazunori Nakayama (Tohoku University / KEK QUP), Tatsumi Nitta (KEK QUP) , Ippei Obata (KEK), Pankaj Saha (KEK), Yuko Urakawa (KEK)

This workshop is co-hosted by KEK Institute of Particle and Nuclear Studies and QUP.