Can I read Model approach to the sign problem on lattice QCD with theta vacuum on EtoBox?

Model approach to the sign problem on lattice QCD with theta vacuum by Sasaki, Takahiro; Takahashi, Junichi; Sakai, Yuji; Kouno, Hiroaki; Yahiro, Masanobu is a scholarly article available to read on EtoBox.

What is Model approach to the sign problem on lattice QCD with theta vacuum about?

We propose a practical way of circumventing the sign problem in lattice QCD simulations with a theta-vacuum term. This method is the reweighting method for the QCD Lagrangian after the chiral transformation. In the Lagrangian, the P-odd mass term as a cause of the sign problem is minimized. Additionally, we investigate theta-vacuum effects on the QCD phase diagram for the realistic 2+1 flavor system, using the three-flavor Polyakov-extended Nambu-Jona-Lasinio (PNJL) model and the entanglement PNJL model as an extension of the PNJL model. The theta-vacuum effects make the chiral transition sharper. We finally investigate theta dependence of the transition temperature and compare with the result of the pure gauge lattice simulation with imaginary theta parameter.

Author

Sasaki, Takahiro; Takahashi, Junichi; Sakai, Yuji; Kouno, Hiroaki; Yahiro, Masanobu

Published

2012

Language

EN