scholarly journals Color screening potential at finite density in two-flavor lattice QCD with Wilson fermions

2013 ◽  
Vol 88 (11) ◽  
Author(s):  
Junichi Takahashi ◽  
Keitaro Nagata ◽  
Takuya Saito ◽  
Atsushi Nakamura ◽  
Takahiro Sasaki ◽  
...  
Keyword(s):  
Lattice Qcd ◽  
Finite Density ◽  
Wilson Fermions

scholarly journals Phase fluctuation of fermion determinant in lattice QCD at finite density

2004 ◽  
Vol 129-130 ◽  
pp. 539-541 ◽  
Author(s):  
Yuji Sasai ◽  
Atsushi Nakamura ◽  
Tetsuya Takaishi
Keyword(s):  
Lattice Qcd ◽  
Phase Fluctuation ◽  
Finite Density

scholarly journals Gauge-fixed Lattice QCD and the dispersion relation of Wilson fermions

2022 ◽  
Vol 258 ◽  
pp. 02003
Author(s):  
Giuseppe Burgio ◽  
Hannes Vogt
Keyword(s):  
Dispersion Relation ◽  
Lattice Qcd ◽  
Correlation Functions ◽  
Landau Gauge ◽  
Coulomb Gauge ◽  
Tree Level ◽  
Wilson Fermions

We show that, when investigating Wilson-fermions correlation functions on the lattice, one is bound to encounter major difficulties in defining their dispersion relation, even at tree level. The problem is indeed quite general and, although we stumbled upon it while studying Coulomb-gauge applications, it also affects gauge fixed studies in covariant gauges, including their most popular version, Landau gauge. In this paper we will discuss a solution to this problems based on a redefinition of the kinematic momentum of the fermion.

scholarly journals A simple idea for Lattice QCD at finite density

2015 ◽  
Author(s):  
Rajiv V. Gavai ◽  
Sayantan Sharma
Keyword(s):  
Lattice Qcd ◽  
Finite Density ◽  
Simple Idea

Finite Density Simulations: Comparison of Various Approaches

2007 ◽  
Vol 22 (07n10) ◽  
pp. 473-489
Author(s):  
Atsushi NAKAMURA
Keyword(s):  
Lattice Qcd ◽  
Finite Density ◽  
Short Overview ◽  
Near Future

This is a short overview of the lattice QCD simulations of finite density systems. We first describe a brief introduction of the lattice QCD at finite density, including the minimum necessary formulation, where we show why an annoying complex fermion determinant appears, and why in some cases it does not appear. Then we review several approaches of present and past days. We conclude possible directions of lattice QCD simulations at finite density in near future.

scholarly journals FINITE DENSITY ALGORITHM IN LATTICE QCD—A CANONICAL ENSEMBLE APPROACH

2002 ◽  
Vol 16 (14n15) ◽  
pp. 2017-2032 ◽  
Author(s):  
KEH-FEI LIU
Keyword(s):  
Monte Carlo ◽  
Lattice Qcd ◽  
Efficient Method ◽  
Chemical Potential ◽  
Canonical Ensemble ◽  
Unbiased Estimate ◽  
Baryon Number ◽  
Monte Carlo Algorithm ◽  
Finite Density ◽  
Ensemble Approach

I will review the finite density algorithm for lattice QCD based on finite chemical potential and summarize the associated difficulties. I will propose a canonical ensemble approach which projects out the finite baryon number sector from the fermion determinant. For this algorithm to work, it requires an efficient method for calculating the fermion determinant and a Monte Carlo algorithm which accommodates unbiased estimate of the probability. I shall report on the progress made along this direction with the Padé–Z2 estimator of the determinant and its implementation in the newly developed Noisy Monte Carlo algorithm.

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