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arXiv 2310.20596math-phmath.MP
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基于 Nash-Moser 定理的 RG 流方程局部解

Local solutions of RG flow equations from the Nash-Moser theorem

Edoardo D'Angelo, Nicola Pinamonti

AI总结:

针对相互作用量子场论的泛函重整化群方程,本文在洛伦兹框架下引入量子态与质量调节器,并借助 Nash-Moser 定理证明局域势近似下质量重标度流方程的局部解存在性。

摘要:

我们证明了在采用适当的 Local Potential Approximation(局域势近似)时,相互作用量子场论有效作用量的泛函 Renormalisation Group(重整化群)方程存在局部解。为在 Lorentzian(洛伦兹)框架中得到该方程,先为理论选定一个量子态,并在作用量中加入由质量构成的调节器。随后利用著名的 Nash-Moser 定理研究质量重标度对应的流方程。

英文摘要:

We prove local existence of solutions of a functional Renormalisation Group equation for the effective action of an interacting quantum field theory, when a suitable Local Potential Approximation is considered. To obtain this equation in a Lorentzian setting, a quantum state for the theory is selected, and a regulator consisting in a mass is added to the action. The flow equation for mass rescalings is then studied using the renown Nash-Moser theorem.

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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