The structure of 0⁺ states in ¹⁶O using real-time evolution method

¹ Department of Physics, Hokkaido University, Sapporo 060-0810, Japan
² Nuclear Reaction Data Centre (JCPRG), Hokkaido University, Sapporo 060-0810, Japan
³ Research Center for Nuclear Physics (RCNP), Osaka University, Ibaraki 567-0047, Japan
⁴ RIKEN (The Institute of Physical and Chemical Research), Wako, Saitama 351-0198, Japan

^* e-mail: motoki@nucl.sci.hokudai.ac.jp
^** e-mail: masaaki@nucl.sci.hokudai.ac.jp

Published online: 24 February 2022

Abstract

α + ¹²C clustering in ¹⁶O has been vigorously studied. In the 2000s, a new picture was proposed that the Hoyle state, ${}^{12}{\text{C(0}}_2^{+}\text{)}$, is a Bose-Einstein condensate of three α particles by the so-called THSR framework. As a next step, many researchers are interested in 4α condensate state in ¹⁶O. In this work, a microscopic calculation named the real-time evolution method (REM) was first applied to a 4α system. As a result, the 0⁺ states in ¹⁶O up to 4α condensate state were expected to be reproduced simultaneously for the first time.