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arXiv 1509.05028hep-phhep-th
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标准模型及其推广中电弱基态的稳定性

Stability of the electroweak ground state in the Standard Model and its extensions

Luca Di Luzio, Gino Isidori, Giovanni Ridolfi

摘要:

我们回顾了量子场论中计算不稳定基态隧穿几率的形式,特别是关于电弱相互作用的标准模型。我们描述了一些细节的近似隐含在这样的计算。特别注意标度不变性的作用,以及由于量子效应和可能的新自由度的标度不变性违反的不同影响。我们表明,新的相互作用的特点是一个新的能量尺度,接近普朗克质量,不无效的主要结论的稳定性的标准模型基态在没有这些条款。

英文摘要:

We review the formalism by which the tunnelling probability of an unstable ground state can be computed in quantum field theory, with special reference to the Standard Model of electroweak interactions. We describe in some detail the approximations implicitly adopted in such calculation. Particular attention is devoted to the role of scale invariance, and to the different implications of scale-invariance violations due to quantum effects and possible new degrees of freedom. We show that new interactions characterized by a new energy scale, close to the Planck mass, do not invalidate the main conclusions about the stability of the Standard Model ground state derived in absence of such terms.

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