论文标题
宇宙学相变：有效的现场理论只是玩具吗？
Cosmological phase transitions: is effective field theory just a toy?
论文作者
论文摘要
为了获得一阶相变，需要对标准模型（SM）higgs潜力进行大量新的物理校正。这意味着新物理学的规模相对较低，这提出了一个问题，是否可以使用有效的场理论（EFT）描述以（几乎）独立于模型的方式来分析相变。我们在分析上和数值上表明，SM-EFT无法描述SM的扰动扩展中的一阶相变。例外是带有树级匹配的higgs-singlet扩展；但是，即使在这种情况下，SM-EFT也只能捕获整个参数空间的一部分，如果在DIM-6运算符处被截断，则描述最多是定性的。我们还评论了EFT技术对黑暗扇区相变的适用性。
To obtain a first order phase transition requires large new physics corrections to the Standard Model (SM) Higgs potential. This implies that the scale of new physics is relatively low, raising the question whether an effective field theory (EFT) description can be used to analyse the phase transition in a (nearly) model-independent way. We show analytically and numerically that first order phase transitions in perturbative extensions of the SM cannot be described by the SM-EFT. The exception are Higgs-singlet extension with tree-level matching; but even in this case the SM-EFT can only capture part of the full parameter space, and if truncated at dim-6 operators, the description is at most qualitative. We also comment on the applicability of EFT techniques to dark sector phase transitions.
