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arXiv 1307.0482gr-qcmath-phmath.MP
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弯曲时空中量子场的“类阿达玛”态

"Vacuum-like" Hadamard states for quantum fields on curved spacetimes

Marcos Brum, Klaus Fredenhagen

摘要:

本文对最近提出的一类具有紧Cauchy超曲面的整体双曲时空中标量自由量子场的Sorkin-Johnston态进行了修正。修改依赖于一个光滑的截止的换向器功能,并导致总是阿达玛状态,与原来的索金-约翰斯顿状态。然而,修正后的索金-约翰斯顿态是由于平滑不再与时空唯一相关。

英文摘要:

We present a modification of the recently proposed Sorkin-Johnston states for scalar free quantum fields on a class of globally hyperbolic spacetimes possessing compact Cauchy hypersurfaces. The modification relies on a smooth cutoff of the commutator function and leads always to Hadamard states, in contrast to the original Sorkin-Johnston states. The modified Sorkin-Johnston states are, however, due to the smoothing no longer uniquely associated to the spacetime.

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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