Thirring model at finite density in 2+1 dimensions with stochastic quantization

被引:16
|
作者
Pawlowski, Jan M. [1 ,2 ]
Zielinski, Christian [1 ,3 ]
机构
[1] Heidelberg Univ, Inst Theoret Phys, D-69120 Heidelberg, Germany
[2] GSI Darmstadt, ExtreMe Matter Inst EMMI, D-64291 Darmstadt, Germany
[3] Nanyang Technol Univ, Div Math Sci, Singapore 637371, Singapore
来源
PHYSICAL REVIEW D | 2013年 / 87卷 / 09期
关键词
STRONG-COUPLING CALCULATIONS; COMPLEX LANGEVIN SIMULATION; LATTICE QCD; EQUATION;
D O I
10.1103/PhysRevD.87.094509
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We consider a generalization of the Thirring model in 2 + 1 dimensions at finite density. We employ stochastic quantization and check for the applicability in the finite density case to circumvent the sign problem. To this end we derive analytical results in the heavy dense limit and compare with numerical ones obtained from a complex Langevin evolution. Furthermore, we make use of indirect indicators to check for incorrect convergence of the underlying complex Langevin evolution. The method allows the numerical evaluation of observables at arbitrary values of the chemical potential. We evaluate the results and compare to the (0 + 1)-dimensional case.
引用
收藏
页数:11
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