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arXiv 1804.04569hep-thhep-lat
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半经典引力中自相互作用非极小标量场的随机量子化

Stochastic quantization of a self-interacting nonminimal scalar field in semiclassical gravity

Eduardo Antonio dos Reis, Gastão Krein, Tibério de Paula Netto, Ilya L. Shapiro

摘要:

我们对弯曲时空中自相互作用的非极小质量标量场进行了随机量子化。利用协变背景场方法和局域动量空间表示,通过同时展开曲率张量及其协变导数和噪声场,得到了欧氏关联函数,并计算了多圈量子修正.随机关联函数再现了Bunch和Parker的著名结果,并被用来构造任意维直到曲率一阶的弯曲时空中的有效势$D$。此外,我们提出了一个例子的数值模拟$D=3$在一阶曲率。

英文摘要:

We employ stochastic quantization for a self-interacting nonminimal massive scalar field in curved spacetime. The covariant background field method and local momentum space representation are used to obtain the Euclidean correlation function and evaluate multi-loop quantum corrections through simultaneous expansions in the curvature tensor and its covariant derivatives and in the noise fields. The stochastic correlation function reproduces the well-known result by Bunch and Parker and is used to construct the effective potential in curved spacetime in an arbitrary dimension $D$ up to the first order in curvature. Furthermore, we present a sample of numerical simulations for $D=3$ in the first order in curvature.

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