A fully solvable model of fermionic interaction in 3 + 1d

被引：0
|
作者：
Seth Grable
Max Weiner
机构：
[1] University of Colorado Boulder,Department of Physics
来源：
Journal of High Energy Physics | / 2023卷
关键词：
Effective Field Theories; Thermal Field Theory; Phase Transitions; Renormalization Group;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Recently, Romatschke found that the poles in O(N) scalar theories do not affect observables such as temperature and pressure. Romatschke went on to show this result holds for marginal, relevant, and irrelevant operators in 3 + 1d O(N) scalar theories. We continue in this direction by studying large-N fermi-interactions in 3 + 1d. To do so, we produce a model of marginally coupled fermi-interactions which is fully renormalizable at large-N. This theory contains poles in the running coupling, however we argue these poles do not affect any physical observables. Further, our theory contains first order phase transition which separates a stable, meta-stable, and unstable phase.
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