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arXiv 1809.08557gr-qchep-thmath-phmath.MP
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非定常时空中量子场的热力学

Thermodynamics of Quantum Fields in Nonstationary Spacetimes

Klaus Fredenhagen, Thomas-Paul Hack, Nicola Pinamonti

摘要:

非定常时空的量子场论(QFT)从观测量代数的角度得到了很好的理解。然而,状态空间在很大程度上是未探索的,由于不存在区分状态(真空,散射状态,热状态)。SFB 676的项目C7专注于通过渐近条件来表征状态,例如全息术(如果边界具有足够多的对称性),近似粒子解释的精确版本(例如在罗伯逊-沃克时空中)以及局部协变场的期望值的确定。此外,还研究了在宇宙学背景下,量子物质场对曲率的反作用以及Einstein-Klein-Gordon系统的微扰量子化。最后,对相互作用场论的平衡态进行了详细的分析和构造。

英文摘要:

Quantum field theory (QFT) on non-stationary spacetimes is well understood from the side of the algebra of observables. The state space, however, is largely unexplored, due to the non-existence of distinguished states (vacuum, scattering states, thermal states). Project C7 of the SFB 676 was focused on characterisations of states by asymptotic conditions, e.g. holography (in case the boundary has sufficiently many symmetries), on a precise version of an approximate particle interpretation (for instance in Robertson--Walker spacetimes) and on the determination in terms of expectation values of locally covariant fields. Additionally, the backreaction of quantum matter fields on the curvature as well as the perturbative quantisation of the Einstein--Klein--Gordon system in the case of a cosmological background have been investigated. Finally, a detailed analysis and construction of equilibrium states for interacting field theories has been performed.

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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