TY  - JOUR
AU  - Liendo, Pedro
AU  - Rong, Junchen
AU  - Zhang, Haoyu
TI  - Spontaneous breaking of finite group symmetries at all temperatures
JO  - SciPost physics
VL  - 14
IS  - 6
SN  - 2542-4653
CY  - Amsterdam
PB  - SciPost Foundation
M1  - PUBDB-2023-07628
SP  - 168
PY  - 2023
AB  - We study conformal field theories with finite group symmetries with spontaneous symmetry breaking (SSB) phases which persist at all temperatures. We work with two λϕ<sup>4</sup> theories coupled through their mass terms. The two λϕ<sup>4</sup> theories are chosen to preserve either the cubic symmetry group, or the tetrahedral symmetry group. A one-loop calculation in the 4 − ϵ  expansion shows that there exist infinitely many fixed points that can host an all temperature SSB phase. An analysis of the renormalization group (RG) stability matrix of these fixed points, reveals that their spectrum contains at least three relevant operators. In other words, these fixed points are tetracritical points.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:001020843600001
DO  - DOI:10.21468/SciPostPhys.14.6.168
UR  - https://bib-pubdb1.desy.de/record/599939
ER  -