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Phase transitions on the dark side of the Gross-Neveu model: Spontaneous symmetry breaking at repulsive coupling
Gabriel Osiander Rein, Fakher F. Assaad, Igor F. Herbut
Gross-Neveu model in 2+1 dimensions exhibits a continuous transition from gapless Dirac semimetal to the gapped quantum anomalous Hall (QAH) insulator at a finite (attractive) coup…
cond-mat.str-el2025
The two-dimensional optical Su-Schrieffer-Heeger model: ground state and thermodynamic properties
Jadson L. Portela e Silva, Gabriel Rein, Sebastião dos A. Sousa-Júnior +2
We investigate the two-dimensional optical Su-Schrieffer-Heeger (SSH) model, in which the electron hopping amplitude is modulated by the difference between neighboring phonon coord…