Study on positronium Bose–Einstein condensation

Akira Ishida; Kenji Shu; Tomoyuki Murayoshi; Xing Fan; Toshio Namba; Shoji Asai; Kosuke Yoshioka; Makoto Kuwata-Gonokami; Nagayasu Oshima; Brian E. O’Rourke; Ryoichi Suzuki

doi:10.56646/jjapcp.7.0_011001

3rd China-Japan Joint Workshop on Positron Science (JWPS2017)

Session ID : 011001

DOI https://doi.org/10.56646/jjapcp.7.0_011001

Conference information

Host: The organizing committee of JWPS2017

Name : 3rd China-Japan Joint Workshop on Positron Science (JWPS2017)

Location : Hefei, China

Date : June 08, 2017 - June 10, 2017

Theory and related experiments on physics and chemistry

Study on positronium Bose–Einstein condensation

Akira Ishida, Kenji Shu, Tomoyuki Murayoshi, Xing Fan, Toshio Namba, Shoji Asai, Kosuke Yoshioka, Makoto Kuwata-Gonokami, Nagayasu Oshima, Brian E. O’Rourke, Ryoichi Suzuki

Author information

Akira Ishida
Department of Physics, Graduate School of Science, and International Center for Elementary Particle Physics (ICEPP), the University of Tokyo, Bunkyo, Tokyo 113-0033, Japan
Kenji Shu
Department of Physics, Graduate School of Science, and International Center for Elementary Particle Physics (ICEPP), the University of Tokyo, Bunkyo, Tokyo 113-0033, Japan
Tomoyuki Murayoshi
Department of Physics, Graduate School of Science, and International Center for Elementary Particle Physics (ICEPP), the University of Tokyo, Bunkyo, Tokyo 113-0033, Japan
Xing Fan
Department of Physics, Graduate School of Science, and International Center for Elementary Particle Physics (ICEPP), the University of Tokyo, Bunkyo, Tokyo 113-0033, Japan
Toshio Namba
Department of Physics, Graduate School of Science, and International Center for Elementary Particle Physics (ICEPP), the University of Tokyo, Bunkyo, Tokyo 113-0033, Japan
Shoji Asai
Department of Physics, Graduate School of Science, and International Center for Elementary Particle Physics (ICEPP), the University of Tokyo, Bunkyo, Tokyo 113-0033, Japan
Kosuke Yoshioka
Photon Science Center (PSC), Graduate School of Engineering, the University of Tokyo, Bunkyo, Tokyo 113-8656, Japan
Makoto Kuwata-Gonokami
Department of Physics, Graduate School of Science, and International Center for Elementary Particle Physics (ICEPP), the University of Tokyo, Bunkyo, Tokyo 113-0033, Japan
Nagayasu Oshima
National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8568, Japan
Brian E. O’Rourke
National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8568, Japan
Ryoichi Suzuki
National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8568, Japan

CONFERENCE PROCEEDINGS OPEN ACCESS

Details

Abstract

Realization of the Bose–Einstein condensation (BEC) of positronium is a long-standing challenge of positron physics. Since the positron is the antimatter of the electron, the positronium is the antimatter of itself, and its gravity interaction is a sum of matter and antimatter components. In this sense, it can be used to study antimatter gravity. It can also be used as a source of a γ-ray laser. We have proposed a new method to realize a positronium BEC: a combination of thermalization in a cold silica target and laser cooling using 1S-2P transitions. We have started some basic studies based on our new idea. Here we report a preliminary result of our positronium thermalization measurement in cryogenic environment and development status of a new laser system for positronium cooling.

Corresponding author

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