5 papers · 1 filter
Condensate states in Fermi and Bose-Hubbard ladders
F. X. Liu, E. S. Ma, Z. Song
Although neither hardcore bosons nor fermions can occupy the same single-site state, they still obey different statistics, resulting in distinct many-particle quantum states, such…
Hilbert space fragmentation in quantum Ising systems induced by side coupling
E. S. Ma, Z. Song
We study Hilbert space fragmentation and quantum scars in quantum spin systems with Ising interactions. The system consists of two sets of quantum spins, A and B. As the parent sys…
Exceptional nodal rings emerging in spinful Rice-Mele chains
E. S. Ma, Z. Song
The Weyl exceptional nodal lines usually occur in 3D topological semimetals, but also emerge in the parameter space of 1D systems. In this work, we study the impact of dissipation…
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…