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arXiv 2308.03225hep-thcond-mat.stat-mechgr-qchep-lat
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加速视为沿虚圆的圆周运动:虚时间形式体系中加速场论的 Kubo-Martin-Schwinger 条件

Acceleration as a circular motion along an imaginary circle: Kubo-Martin-Schwinger condition for accelerating field theories in imaginary-time formalism

Victor E. Ambruş, Maxim N. Chernodub

AI总结:

本文在虚时间形式体系中研究均匀加速热场论,证明加速 KMS 条件对应于绕欧几里得 Rindler 视界点的整数倍旋转及虚固有时边界条件,为格点模拟 Hawking-Unruh 效应等奠定基础。

摘要:

我们讨论了均匀加速参考系中处于热平衡的场论的虚时间形式体系。我们表明,在 Minkowski 时空的 Wick 旋转下,Rindler 事件视界在切于加速方向和虚时间的二维子空间中收缩为一个点。我们证明,Kubo-Martin-Schwinger(KMS)条件的加速版本意味着对该切向子空间中绕此欧几里得 Rindler 事件视界点作整数倍旋转而相关联的所有时空点进行等同,旋转量子由热加速 α=a/T 定义。在 Wick 旋转后的 Rindler 双曲坐标中,KMS 关系在虚固有时(快度)坐标方面归结为标准的(反)周期边界条件。我们的发现为利用第一性原理格点模拟研究具有事件视界的几何中的 Hawking-Unruh 辐射、加速早期宇宙中的相变以及相对论重离子碰撞中产生的夸克-胶子等离子体早期阶段铺平了道路。

英文摘要:

We discuss the imaginary-time formalism for field theories in thermal equilibrium in uniformly accelerating frames. We show that under a Wick rotation of Minkowski spacetime, the Rindler event horizon shrinks to a point in a two-dimensional subspace tangential to the acceleration direction and the imaginary time. We demonstrate that the accelerated version of the Kubo-Martin-Schwinger (KMS) condition implies an identification of all spacetime points related by integer-multiple rotations in the tangential subspace about this Euclidean Rindler event-horizon point, with the rotational quanta defined by the thermal acceleration, $α= a/T$. In the Wick-rotated Rindler hyperbolic coordinates, the KMS relations reduce to standard (anti-)periodic boundary conditions in terms of the imaginary proper time (rapidity) coordinate. Our findings pave the way to study, using first-principle lattice simulations, the Hawking-Unruh radiation in geometries with event horizons, phase transitions in accelerating Early Universe and early stages of quark-gluon plasma created in relativistic heavy-ion collisions.

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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