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arXiv 2103.13347hep-thgr-qchep-ph
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威尔逊有效场论与弦论

Wilsonian Effective Field Theory and String Theory

S. P. de Alwis

摘要:

我们认为,从弦论导出一个有效场论需要一个具有物理截止的威尔逊观点。采用适当的时间正则化,我们证明了解耦的状态和对比,这发生在维正则化。特别指出,即使在某些紫外尺度下由经典作用量计算的宇宙学常数(CC)是负的,这并不一定意味着在宇宙学尺度下计算的CC也是负的,并讨论了从弦/KK尺度下的CC为负开始实现正CC的可能标准。显然,这对沼泽地索赔有影响。

英文摘要:

We argue that deriving an effective field theory from string theory requires a Wilsonian perspective with a physical cutoff. Employing proper time regularization we demonstrate the decoupling of states and contrast this with what happens in dimensional regularization. In particular we point out that even if the cosmological constant (CC) calculated from some classical action at some ultra-violet scale is negative, this does not necessarily imply that the CC calculated at cosmological scales is also negative, and discuss the possible criteria for achieving a positive CC starting with a CC at the string/KK scale which is negative. Obviously this has implications for swampland claims.

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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