Workshop on Very Light Dark Matter 2023

Mario Royal Kaikan (Chino, Nagano) + Online

Mario Royal Kaikan (Chino, Nagano) + Online


Workshop on Very Light Dark Matter 2023

Date: March 28-30, 2023

Venue: Mario Royal Kaikan (Chino, Nagano) + Online (Zoom)

The present universe is filled with dark matter. Although it is still unclear what dark matter is made of, it is known to have played an extremely important role in the formation of the structure of the universe such as galaxies and galaxy clusters. Recently, dark matter with extremely low mass has attracted much attention. Characteristic signatures of some candidates (e.g. axions and dark photons) in the very early universe have also been vigorously discussed.

Following the success of VLDM2021, in this workshop, recent experimental results as well as future prospects, and theoretical progress of very light dark matter will be discussed. We will have invited talks by experts in the related fields, as well as contributed talks. One of the aims of this workshop is to deepen the understanding of recent developments and future prospects in this field through discussions among the participants. The following is a list of representative topics.

  • Axion and axion like particles
  • Dark photon and other light dark matter
  • Light dark matter search experiments
  • Black hole superradiance
  • Cosmic birefringence
  • Structure formation
  • Weak gravity conjecture


Invited Speakers:
Nancy Aggarwal (Northwestern University)
Hiroki Fujimoto (University of Tokyo)
Mariangela Lisanti (Princeton University)
Marta Monelli (Max-Planck-Institute for Astrophysics)
Toshifumi Noumi (Kobe University)
Yuka Oshima (University of Tokyo)
Alexandros Papageorgiou (IBS-CTPU)
Konstantin Springmann (Technical University of Munich)

Code of Conduct:
It is the policy of the Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU) that all members and visitors will conduct themselves in a professional manner that is welcoming and free from any form of discrimination, harassment, or retaliation. Members and visitors will avoid any inappropriate actions or statements based on individual characteristics such as age, race, ethnicity, gender, sexual orientation, marital status, nationality, or political affiliation. Disruptive or harassing behavior of any kind will not be tolerated. Harassment includes but is not limited to inappropriate or intimidating behavior and language, unwelcome jokes or comments, unwanted touching or attention, offensive images, photography without permission, and stalking. Members and visitors will treat each other with respect to create a collegial, inclusive, and professional environment at the Kavli IPMU.


Elisa Ferreira (Kavli IPMU)
Tomohiro Fujita (Waseda / RESCEU)
Motoko Fujiwara (TUM)
Nagisa Hiroshima (Toyama / RIKEN)
Naoya Kitajima (Tohoku)
Eiichiro Komatsu (MPA / Kavli IPMU)
Yuta Michimura (Caltech / RESCEU)
Ippei Obata (Kavli IPMU)
Maresuke Shiraishi (SUS)
Fuminobu Takahashi (Tohoku)
Yuko Urakawa (KEK)
Masaki Yamada (Tohoku)
Wen Yin (Tohoku)

Supported by:
JSPS KAKENHI No. JP20H05851 (PI: Fuminobu Takahashi)
JSPS KAKENHI No. JP20H05852 (PI: Kohta Murase)
JSPS KAKENHI No. JP20H05854 (PI: Yuta Michimura)
JSPS KAKENHI No. JP20H05859 (PI: Eiichiro Komatsu)
JSPS KAKENHI No. JP19K14718 (PI: Maresuke Shiraishi)
JSPS KAKENHI No. JP22K14035 (PI: Nagisa Hiroshima)

file file

Registration and abstract submission