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arXiv 1409.3243hep-thgr-qc
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幺正性与Vainshtein机制

Unitarity and the Vainshtein Mechanism

Nemanja Kaloper, Antonio Padilla, Paul Saffin, David Stefanyszyn

摘要:

我们调查的大规模规范理论,功能的Vainshtein机制的低能量极限,集中在紫外模式的集成的影响。事实证明,戈德斯通部门显着影响的影响,从这样的模式相对于有效场论,其中不相关的运营商引起的重模式被简单地抛弃。一致保留的高阶修正的影响影响强耦合,并表明UV完成的性质影响低能理论显着。这使人们对天真地估计的环境强耦合尺度和环境增强筛选的有效性产生了怀疑。环境效应本身可能不足以治愈真空截止之外的理论的不良行为。

英文摘要:

We investigate low energy limits of massive gauge theories that feature the Vainshtein mechanism, focussing on the effects of the UV modes that are integrated out. It turns out that the Goldstone sectors are significantly influenced by the effects from such modes relative to the effective field theories where the irrelevant operators induced by heavy modes are simply cast aside. The effects of the consistently retained higher order corrections affect the strong coupling and show that the nature of the UV completion influences the low energy theory significantly. This casts doubts on the naively estimated environmental strong coupling scale, and on the effectiveness of the environmental enhancement of screening. The environmental effects by themselves might not suffice to cure the bad behavior of the theory beyond the vacuum cutoff.

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