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arXiv 1910.04556hep-thgr-qc
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群场论中的温度场双态

Thermofield Double States in Group Field Theory

Xiao-Kan Guo

摘要:

群场论是矩阵/张量模型的高阶推广,并编码了量子引力的单纯几何。本文研究了群场论中的温度场双态。本文以Kotecha和Oriti最近发现的群场论中的平衡Gibbs态为出发点,在此基础上构造了满足Kubo-Martin-Schwinger条件的热场双态。我们利用群场的Weyl $C^*$ -代数,从该Weyl代数上的压缩态出发,得到了一类特殊的具有单对称性的热场双态.在群场论Fock真空中,热场双态是有限流动参数$β$下的凝聚态。我们认为,在黑洞视界和量子宇宙学的群场论凝聚图象中,这类热场双态的平衡流参数$β$与引力热力学中的逆温度有关。

英文摘要:

Group field theories are higher-rank generalizations of matrix/tensor models, and encode the simplicial geometries of quantum gravity. In this paper, we study the thermofield double states in group field theories. The starting point is the equilibrium Gibbs states in group field theory recently found by Kotecha and Oriti, based on which we construct the thermofield double state as a "thermal" vacuum respecting the Kubo-Martin-Schwinger condition. We work with the Weyl $C^*$-algebra of group fields, and a particular type of thermofield double states with single type of symmetry are obtained from the squeezed states on this Weyl algebra. The thermofield double states, when viewed as states on the group field theory Fock vacuum, are condensate states at finite flow parameter $β$. We suggest that the equilibrium flow parameters $β$ of this type of thermofield double states in the group field theory condensate pictures of black hole horizon and quantum cosmology are related to the inverse temperatures in gravitational thermodynamics.

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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