Disorder Operator and Rényi Entanglement Entropy of Symmetric Mass Generation

The "symmetric mass generation" (SMG) quantum phase transition discovered in recent years has attracted great interest from both condensed matter and high energy theory communities. Here, interacting Dirac fermions acquire a gap without condensing any fermion bilinear mass term or any conc...

Full description

Saved in:
Bibliographic Details
Published in:Physical review letters 2024-04, Vol.132 (15), p.156503-156503, Article 156503
Main Authors: Liu, Zi Hong, Da Liao, Yuan, Pan, Gaopei, Song, Menghan, Zhao, Jiarui, Jiang, Weilun, Jian, Chao-Ming, You, Yi-Zhuang, Assaad, Fakher F, Meng, Zi Yang, Xu, Cenke
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The "symmetric mass generation" (SMG) quantum phase transition discovered in recent years has attracted great interest from both condensed matter and high energy theory communities. Here, interacting Dirac fermions acquire a gap without condensing any fermion bilinear mass term or any concomitant spontaneous symmetry breaking. It is hence beyond the conventional Gross-Neveu-Yukawa-Higgs paradigm. One important question we address in this Letter is whether the SMG transition corresponds to a true unitary conformal field theory. We employ the sharp diagnosis including the scaling of disorder operator and Rényi entanglement entropy in large-scale lattice model quantum Monte Carlo simulations. Our results strongly suggest that the SMG transition is indeed an unconventional quantum phase transition and it should correspond to a true (2+1)d unitary conformal field theory.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.132.156503