PHASE-STRUCTURE OF A Z(2) SCALAR-FERMION MODEL

被引：7

作者：

BERLIN, J

HASENFRATZ, A

HELLER, UM

KLOMFASS, M

机构：

[1] FLORIDA STATE UNIV,DEPT PHYS,TALLAHASSEE,FL 32306

[2] UNIV ARIZONA,DEPT PHYS,TUCSON,AZ 85721

来源：

PHYSICS LETTERS B | 1990年 / 249卷 / 3-4期

关键词：

D O I：

10.1016/0370-2693(90)91021-3

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We determine the phase diagram of a one-component real φ4 scalar model interacting with two flavors of staggered fermions via a hypercubic Yukawa coupling. Besides the gaussian critical point at y = 0 around which the usual perturbation theory is defined, we find indications for a possible multi-critical point at moderate Yukawa coupling. We compare our results with different formulations of the Yukawa interaction and argue that the features for small to intermediate y are universal. © 1990.

引用

页码：485 / 489

页数：5

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