UNQUENCHED INVESTIGATION OF FERMION MASSES IN A CHIRAL FERMION THEORY ON THE LATTICE

被引：30

作者：

BOCK, W ^{[1
]}

DE, AK ^{[1
]}

机构：

[1] FORSCHUNGSZENTRUM JULICH, HLRZ, W-5170 JULICH 1, GERMANY

来源：

PHYSICS LETTERS B | 1990年 / 245卷 / 02期

关键词：

D O I：

10.1016/0370-2693(90)90135-S

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Using dynamical fermions we study the decoupling of the fermion doublers of chiral lattice fermions in the broken symmetry phase of a scalar-fermion model. The model uses a chiral invariant Wilson term, called a Wilson-Yukawa term with coupling strength w, in addition to the usual Yukawa coupling y. We find qualitative agreement with our results obtained before in the quenched approximation. First in the w = 0 case we establish a strong Yukawa coupling region. Then for relatively large but fixed w we confirm that the fermion doublers can be easily decoupled by giving them masses of the order of the cutoff as the symmetry restoring transition is approached. © 1990.

引用

页码：207 / 212

页数：6

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