4 papers
Dynamic destruction of magnetic order in a quantum Ising chain with oscillating transverse field
E. S. Ma, Z. Song
We study the dynamic response of magnetic domain walls in low-lying excited states of an Ising chain to an oscillating transverse field. Based on the exact instantaneous eigenstate…
Dynamically stable topological edge states in an extended Su-Schrieffer-Heeger ladder with balanced perturbation
E. S. Ma, K. L. Zhang, Z. Song
The on-site potentials may break the symmetry of a system, resulting in the loss of its original topology protected by the symmetry. In this work, we study the counteracting effect…
Condensate ground states of hardcore bosons induced by an array of impurities
J. Y. Liu-Sun, E. S. Ma, Z. Song
Neither hardcore bosons nor fermions can occupy the same lattice site-state. However, a nearest neighbour interaction may counteract the hardcore effect, resulting in condensate st…
Topological quantized edge-pumping-spin flip in Rice-Mele model with spin-orbit coupling
E. S. Ma, Z. Song
The quantized Thouless pumping charge in a spinless Rice-Mele (RM) model originates from a degeneracy point in the parameter space and cannot be detected when open boundary conditi…