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arXiv 2302.03233hep-th
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一个具有非局域模和边界模的黑洞玩具模型:来自非平凡边界条件

A black hole toy model with non-local and boundary modes from non-trivial boundary conditions

Peng Cheng

AI总结:

本文通过研究两个平行边界间具有非平凡边界条件的规范理论作为黑洞玩具模型,系统分析了边界模、非局域模、体涨落模和拓扑模的熵贡献及其随温度的转变,为理解贝肯斯坦-霍金熵提供新线索。

摘要:

我们研究两个平行边界之间具有非平凡边界条件的规范理论,该理论作为黑洞背景的一个玩具模型,其两个边界分别位于视界附近和无穷远处,旨在更好地理解贝肯斯坦-霍金熵。这组新的边界条件允许边界模和两个边界之间相互作用的非局域模存在。我们对这些边界模以及拉伸在两个边界之间的威尔逊线进行了仔细分析,并确认它们是相空间中的物理变量。连同体涨落模和拓扑模,所有物理模的配分函数和熵都通过欧几里得路径积分进行了计算。结果表明,随着温度的变化,不同模的主导地位之间会发生转变。在高温下,熵与体积成正比的边界涨落模占主导地位;在低温下,按边界面积标度的边界模和威尔逊线更为重要。在超低温下,当所有涨落模都消失时,我们观察到拓扑模,其熵为系统长度尺度的对数。这些边界模和非局域模在具有类似边界条件的黑洞系统中应有其对应物,这可能为黑洞物理提供重要线索。

英文摘要:

We study gauge theories between two parallel boundaries with non-trivial boundary conditions, which serve as a toy model for black hole background with two boundaries near the horizon and infinite, aiming for a better understanding of the Bekenstein-Hawking entropy. The new set of boundary conditions allows boundary modes and non-local modes that interplay between the two boundaries. Those boundary modes and Wilson lines stretched between the two boundaries are carefully analyzed and are confirmed as physical variables in the phase space. Along with bulk fluctuation modes and topological modes, the partition function and entropy of all physical modes are evaluated via Euclidean path integral. It is shown that there are transitions between the dominance of different modes as we vary the temperature. The boundary fluctuation modes whose entropy is proportional to the volume dominate at high temperatures, and the boundary-area scaled boundary modes and Wilson lines are the more important at low temperatures. At super-low temperatures, when all the fluctuation modes die off, we see the topological modes whose entropy is the logarithm of the length scales of the system. The boundary modes and non-local modes should have their counterparts in a black hole system with similar boundary conditions, which might provide important hints for black hole physics.

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