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arXiv 0709.4595hep-lathep-phhep-th
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手征费米子的世界线方法

Worldline Approach to Chiral Fermions

Kurt Langfeld, Gerald Dunne, Holger Gies, Klaus Klingmuller

摘要:

我们建议将“世界线数值”应用于夸克行列式的数值计算。具有U(1)手征对称性的Gross-Neveu模型被认为是第一测试。世界线方法允许解析重整化,只有有限部分的行列式需要数值计算。结果表明,离散的世界线,这是中央的数值处理,保持手征对称性。作为一个标量背景场的扭结配置的数值结果示出,并与分析结果进行比较。有限费米子化学势的情况也作了简要的讨论。

英文摘要:

We propose to apply ``worldline numerics'' to a numerical calculation of quark determinants. The Gross-Neveu model with a U(1) chiral symmetry is considered as a first test. The worldline approach allows for an analytic renormalisation, and only finite parts of the determinant require a numerical calculation. It is shown that the discretisation of the worldlines, which is central to the numerical treatment, preserves chiral symmetry exactly. Numerical results for a kink configuration as a scalar background field are shown and compared with analytical results. The case of finite fermion chemical potential is also briefly discussed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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