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22-28 July 2018
Kellogg Hotel and Conference Center
EST timezone

Exploring the phase diagram of finite density QCD at low temperature by the complex Langevin method

Jul 23, 2018, 3:00 PM
20m
Centennial (Kellogg Hotel and Conference Center)

Centennial

Kellogg Hotel and Conference Center

219 S Harrison Rd, East Lansing, MI 48824
Nonzero Temperature and Density Nonzero Temperature and Density

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)

Presentation Materials