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arXiv 2304.14366hep-latcond-mat.stat-mechhep-th
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非紧致阿贝尔规范模型中的规范固定与规范关联

Gauge fixing and gauge correlations in noncompact Abelian gauge models

Claudio Bonati, Andrea Pelissetto, Ettore Vicari

AI总结:

该研究针对非紧致U(1)规范对称性格点模型,分析线性规范固定下规范场可观测量的定义性问题,结合解析推导与三维非紧致格点Abelian Higgs模型的数值验证,揭示规范固定方式对可观测量定义的影响。

摘要:

我们研究了具有非紧致U(1)规范对称性的格点模型中线性规范固定与规范场关联函数的若干一般性质。特别地,我们证明了即使存在规范固定,某些规范场可观测量(如光子质量算符)仍没有良好定义,这取决于所采用的具体规范固定方式及其实现方式。在三维非紧致格点Abelian Higgs模型中开展的数值测试完全支持解析结果,并提供了进一步的洞见。

英文摘要:

We investigate some general properties of linear gauge fixings and gauge-field correlators in lattice models with noncompact U(1) gauge symmetry. In particular, we show that, even in the presence of a gauge fixing, some gauge-field observables (like the photon-mass operator) are not well-defined, depending on the specific gauge fixing adopted and on its implementation. Numerical tests carried out in the three-dimensional noncompact lattice Abelian Higgs model fully support the analytical results and provide further insights.

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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