PROPERTIES OF THE HYPERCHARGE SECTOR OF THE STANDARD MODEL ON THE LATTICE

被引：22

作者：

AOKI, S ^{[1
]}

LEE, IH ^{[1
]}

SHROCK, RE ^{[1
]}

机构：

[1] ROCKEFELLER UNIV, DEPT PHYS, NEW YORK, NY 10021 USA

来源：

NUCLEAR PHYSICS B | 1991年 / 355卷 / 02期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0550-3213(91)90120-M

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

Using a hopping parameter expansion, we demonstrate the decoupling of fermion doubler modes in the hypercharge U(1)Y lattice gauge theory. We also show analytically that it is possible to tune the bare Yukawa coupling to a value such that the fundamental physical fermion am(f) = 0 (as is necessary in order to obtain a finite physical mass m(f) in the continuum limit), and we calculate this value. The appropriate special case of these results is compared with numerical simulations of the frozen-gauge limit of the U(1)Y theory, and good agreement is found. The role of the Yukawa coupling in a chiral lattice gauge theory is contrasted with that in a nonchiral Yukawa model.

引用

页码：383 / 421

页数：39

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