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arXiv 2201.12001hep-lathep-th
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$PT$对称模型的复Langevin模拟

Complex Langevin simulations for $PT$-symmetric models

Arpith Kumar, Anosh Joseph

摘要:

具有$PT$对称性的自相互作用标量量子场论在物理上是可接受的,因为它们的能谱是实的,并且在下面有界。然而,具有$PT$不变势的模型通常具有复杂的作用,并且由于数值符号问题,使用基于传统Monte Carlo的方法对此类系统进行非微扰研究受到阻碍。在这项工作中,我们采用基于随机量子化的复朗之万研究二维标量场理论,包括表现出$PT$对称性。我们还研究了这些系统的最简单的超对称版本,并解决了动力学超对称破缺的问题。

英文摘要:

Self-interacting scalar quantum field theories possessing $PT$-symmetry are physically admissible since their energy spectrum is real and bounded below. However, models with $PT$-invariant potentials can have complex actions in general and a non-perturbative study of such systems using methods based on traditional Monte Carlo is hindered due to numerical sign problem. In this work we employ complex Langevin based on stochastic quantization to study two-dimensional scalar field theories, including the ones exhibiting $PT$-symmetry. We also study the simplest supersymmetric version of these systems and address the question on dynamical supersymmetry breaking.

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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