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arXiv 1802.02883hep-thgr-qcmath-phmath.MPquant-ph
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外标量势中标量场的重整化

Renormalization for a Scalar Field in an External Scalar Potential

S. A. Fulling, T. E. Settlemyre, K. A. Milton

摘要:

Pauli-Villars正则化过程证实并锐化了先前通过协变点分裂得出的结论。将与静态标量势相互作用的量子化标量场的应力张量的发散分离到背景势的三参数局部协变泛函中。这些分歧可以自然地吸收到耦合常数的潜力,被视为一个动力学对象在其本身的权利;在这里,这是详细证明了两个不同的模型的场-势耦合。这是对势的对数的剩余依赖,让人想起完全相互作用量子场论中的重整化群;这些项是有限的,但在数值上依赖于任意的质量或长度参数,这纯粹是一个惯例问题。这项工作是一个程序中的一个步骤,以阐明边界分歧取代急剧上升的光滑的潜力的尖锐边界。

英文摘要:

The Pauli--Villars regularization procedure confirms and sharpens the conclusions reached previously by covariant point splitting. The divergences in the stress tensor of a quantized scalar field interacting with a static scalar potential are isolated into a three-parameter local, covariant functional of the background potential. These divergences can be naturally absorbed into coupling constants of the potential, regarded as a dynamical object in its own right; here this is demonstrated in detail for two different models of the field-potential coupling. here is a residual dependence on the logarithm of the potential, reminiscent of the renormalization group in fully interacting quantum field theories; these terms are finite but numerically dependent on an arbitrary mass or length parameter, which is purely a matter of convention. This work is one step in a program to elucidate boundary divergences by replacing a sharp boundary by a steeply rising smooth potential.

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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