Kenta Shigaki investigates the properties of the extraordinary matter utilizing the particle accelerators, LHC at CERN (Switzerland) and RHIC and future EIC at Brookhaven National Laboratory (US). He works on high energy nucleus-nucleus collision experiments to study the new state of matter with deconfined quarks and gluons, which must have filled the early universe within ~10 microseconds after the Big Bang. His main interest is to elucidate phenomena with restored chiral symmetry, the key mechanism to generate the mass of matter.