Background field method in the gradient flow

研究成果: ジャーナルへの寄稿会議記事査読


The Yang-Mills gradient flow and its extension to the fermion field provide a very general method to obtain renormalized observables in gauge theory. The method is applicable also with non- perturbative regularization such as lattice. The gradient flow thus offers useful probes to study non-perturbative dynamics of gauge theory. In this work, aiming at possible simplification in per-Turbative calculations associated with the gradient flow, a modification of the gauge-fixed version of the flow equation, which preserves gauge covariance under the background gauge transforma-Tion, is proposed. This formulation allows for example a very quick one-loop calculation of the small flow time expansion of a composite operator that is relevant to the construction of a lattice energy-momentum tensor. Some details of the calculation, which have not been given elsewhere, are presented.

ジャーナルProceedings of Science
出版ステータス出版済み - 1月 1 2015
イベント33rd International Symposium on Lattice Field Theory, LATTICE 2015 - Kobe, 日本
継続期間: 7月 14 20157月 18 2015

!!!All Science Journal Classification (ASJC) codes

  • 一般


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