Speaker
Dr
Yuta Ito
(KEK)
Description
Monte Carlo studies of QCD at finite density suffer from
the notorious sign problem, which becomes easily uncontrollable
as the chemical potential increases for a moderate lattice size.
In this work, we attempt to approach the high density
low temperature region by the complex Langevin method (CLM).
Simulations are performed on an 8^3 x 16 lattice using four-flavor
staggered fermions with reasonably small quark mass.
Unlike previous work with a 4^3 x 8 lattice,
the criterion for correct convergence is satisfied
in the nuclear matter phase without using the deformation technique.
In this phase the baryon number density has a plateau with respect
to the chemical potential, and it starts to grow rapidly at some point.
Primary author
Dr
Yuta Ito
(KEK)
Co-authors
Prof.
Asato Tsuchiya
(Shizuoka University)
Dr
Hideo Matsufuru
(KEK)
Prof.
Jun Nishimura
(KEK, SOKENDAI)
Dr
Shinji Shimasaki
(Keio University, KEK)
Dr
Shoichiro Tsutsui
(High Energy Accelerator Research Organization)