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arXiv 2005.11804hep-thcond-mat.stat-mechcond-mat.str-el
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Lifshitz action的涌现几何和路径积分优化

Emergent geometry and path integral optimization for a Lifshitz action

Amr Ahmadain, Israel Klich

摘要:

扩展了Caputa等人(Phys. Rev. Lett.)提出的二维共形场论的欧几里得路径积分的背景度量优化过程。119,071602(2017)),到自由无质量标量场的各向异性尺度不变的$z=2$维Lifshitz场论,我们找到了静态和动态关联函数的最佳几何。对于静态的关联函数,最优背景度量等价于Poincare曲面上的AdS度量,而对于动态的关联函数,我们发现了Lifshitz类度量.这个结果表明,一个类似MERA的张量网络,也许没有么正性,仍然被认为是这个系统的数值描述的最佳背景时空配置,即使我们开始的经典作用量不是一个共形场论。

英文摘要:

Extending the background metric optimization procedure for Euclidean path integrals of two-dimensional conformal field theories, introduced by Caputa et al. (Phys. Rev. Lett. 119, 071602 (2017)), to a $z=2$ anisotropically scale-invariant $(2+1)$-dimensional Lifshitz field theory of a free massless scalar field, we find optimal geometries for static and dynamic correlation functions. For the static correlation functions, the optimal background metric is equivalent to an AdS metric on a Poincare patch, while for dynamical correlation functions, we find Lifshitz like metric. This results suggest that a MERA-like tensor network, perhaps without unitarity, would still be considered an optimal background spacetime configuration for the numerical description of this system, even though the classical action we start with is not a conformal field 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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