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arXiv 2201.00588hep-th
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关键维度有效行动的背景独立性

Background independence of effective actions at critical dimension

Mohammad R. Garousi

摘要:

最近,通过$α',α'^2,α'^3$阶的显式计算,人们观察到弦论在临界维的有效作用量与封闭时空流形的背景无关。本文推测,对于开时空流形,有效作用量甚至与边界的性质无关,\ie类时和类空边界的边界耦合是相同的.我们通过计算类空边界的玻色弦论中$α'$阶的边界耦合来支持这一建议,并表明它们与最近发现的类时边界的耦合是相同的。

英文摘要:

Recently, by explicit calculations at orders $α',α'^2,α'^3$, it has been observed that the effective action of string theory at the critical dimension is independent of the background for the closed spacetime manifolds. In this paper we speculate that for the open spacetime manifolds, the effective action is even independent of the character of the boundary, \ie the boundary couplings for timelike and spacelike boundaries are the same. We support this proposal by calculating the boundary couplings in the bosonic string theory at order $α'$ for the spacelike boundary and show that they are the same as the couplings for the timelike boundary that have been recently found.

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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