Lifting flat directions in lattice supersymmetry

被引：12

作者：

Catterall, Simon ^{[1
]}

Schaich, David ^{[1
]}

机构：

[1] Syracuse Univ, Dept Phys, Syracuse, NY 13244 USA

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2015年 / 07期

关键词：

Lattice Gauge Field Theories; Supersymmetric gauge theory;

D O I：

10.1007/JHEP07(2015)057

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：

We present a procedure to improve the lattice definition of N = 4 supersymmetric Yang-Mills theory. The lattice construction necessarily involves U(1) flat directions, and we show how these can be lifted without violating the exact lattice supersymmetry. The basic idea is to modify the equations of motion of an auxiliary field, which determine the moduli space of the system. Applied to numerical calculations, the resulting improved lattice action leads to dramatically reduced violations of supersymmetric Ward identities and much more rapid approach to the continuum limit.

引用

页数：26

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