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arXiv 2009.14767hep-lathep-th
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用Wilson流重整化三维标量$SU(N)$理论中的能量动量张量

Renormalization of the energy-momentum tensor in three-dimensional scalar $SU(N)$ theories using the Wilson flow

Luigi Del Debbio, Elizabeth Dobson, Andreas Jüttner, Ben Kitching-Morley, Joseph K. L. Lee, Valentin Nourry, Antonin Portelli, Henrique Bergallo Rocha, Kostas Skenderis

摘要:

能量动量张量的非微扰确定对于理解强耦合系统的物理是必不可少的。Wilson流消除发散接触项的能力使其成为重整化晶格上能量-动量张量的实用方法。本文利用Wilson流定义了一个在格点上伴随有$φ^4$相互作用的$SU(N)$的三维无质量标量场的能量动量张量的重整化过程。在这个理论中,能量动量张量可以与$φ^2$混合,我们给出了$N=2$理论的混合系数的数值结果。

英文摘要:

A nonperturbative determination of the energy-momentum tensor is essential for understanding the physics of strongly coupled systems. The ability of the Wilson flow to eliminate divergent contact terms makes it a practical method for renormalizing the energy-momentum tensor on the lattice. In this paper, we utilize the Wilson flow to define a procedure to renormalize the energy-momentum tensor for a three-dimensional massless scalar field in the adjoint of $SU(N)$ with a $φ^4$ interaction on the lattice. In this theory the energy-momentum tensor can mix with $φ^2$ and we present numerical results for the mixing coefficient for the $N=2$ theory.

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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