Dual lattice representations for O(N) and CP(N-1) models with a chemical potential

被引：24

作者：

Bruckmann, Falk ^{[1
]}

Gattringer, Christof ^{[2
]}

Kloiber, Thomas ^{[1
,2
]}

Sulejmanpasic, Tin ^{[3
]}

机构：

[1] Univ Regensburg, Inst Phys, D-93053 Regensburg, Germany

[2] Graz Univ, Inst Phys, A-8010 Graz, Austria

[3] N Carolina State Univ, Dept Phys, Raleigh, NC 27695 USA

来源：

PHYSICS LETTERS B | 2015年 / 749卷

基金：

奥地利科学基金会;

关键词：

NUMERICAL SIMULATIONS; GAUGE-THEORY; ALGORITHM;

D O I：

10.1016/j.physletb.2015.08.015

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We derive dual representations for O(N) and CP(N - 1) models on the lattice. In terms of the dual variables the partition sums have only real and positive contributions also at finite chemical potential. Thus the complex action problem of the conventional formulation is overcome and using the dual variables Monte Carlo simulations are possible at arbitrary chemical potential. (C) 2015 The Authors. Published by Elsevier B.V.

引用

页码：495 / 501

页数：7

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