57 citations · 117 across the 7 of their papers we have counts for
3 papers · 1 filter
Evading the sign problem in the mean-field approximation through Lefschetz-thimble path integral
Yuya Tanizaki, Hiromichi Nishimura, Kouji Kashiwa
The fermion sign problem appearing in the mean-field approximation is considered, and the systematic computational scheme of the free energy is devised by using the Lefschetz-thimb…
Gravitational collapse of thin shells: Time evolution of the holographic entanglement entropy
Ville Keranen, Hiromichi Nishimura, Stefan Stricker +2
We study the dynamics of gravitationally collapsing massive shells in AdS spacetime, and show in detail how one can determine extremal surfaces traversing them. The results are use…
Complex saddle points in finite-density QCD
Hiromichi Nishimura, Michael C. Ogilvie, Kamal Pangeni
We consider complex saddle points in QCD at finite temperature and density, which are constrained by symmetry under charge and complex conjugations. This approach naturally incorpo…