Geometrical quench and dynamical quantum phase transition in the $\alpha-T_3$ lattice

28 Apr 2020 Gulácsi Balázs Heyl Markus Dóra Balázs

We investigate quantum quenches and the Loschmidt echo in the two dimensional, three band $\alpha-T_3$ model, a close descendant of the dice lattice. By adding a chemical potential to the central site, the integral of the Berry curvature of the bands in different valleys is continously tunable by the ratio of the hopping integrals between the sublattices... (read more)

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Categories


  • QUANTUM GASES
  • MESOSCALE AND NANOSCALE PHYSICS