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arXiv 1703.04747hep-thcond-mat.stat-mechmath-phmath.MP
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Lifshitz理论的热核方法

Heat kernel methods for Lifshitz theories

Andrei O. Barvinsky, Diego Blas, Mario Herrero-Valea, Dmitry V. Nesterov, Guillem Pérez-Nadal, Christian F. Steinwachs

摘要:

利用热核技术研究了Lifshitz理论的单圈协变有效作用量。Lifshitz理论的特点是空间和时间之间的各向异性标度。这是由时空的优先叶理的存在所强制的,它打破了洛伦兹不变性。与相对论的情况相反,协变的Lifshitz理论只有在保叶理结构的双同态下才是不变的。我们开发了一个系统的方法,以减少计算的有效行动的一个通用的Lifshitz运营商的算法作用于相对论运营商的已知结果。此外,我们提出的技术,大大简化了具有特殊性质的运营商的计算。我们证明了这些方法的效率明确的应用。

英文摘要:

We study the one-loop covariant effective action of Lifshitz theories using the heat kernel technique. The characteristic feature of Lifshitz theories is an anisotropic scaling between space and time. This is enforced by the existence of a preferred foliation of space-time, which breaks Lorentz invariance. In contrast to the relativistic case, covariant Lifshitz theories are only invariant under diffeomorphisms preserving the foliation structure. We develop a systematic method to reduce the calculation of the effective action for a generic Lifshitz operator to an algorithm acting on known results for relativistic operators. In addition, we present techniques that drastically simplify the calculation for operators with special properties. We demonstrate the efficiency of these methods by explicit applications.

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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