Author

Z. Song

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Preprint Oct 2026

Emergent one-dimensional Bloch oscillations in coupled Ising layers

Bloch oscillations typically arise in periodic systems subjected to a constant force generated by a potential gradient. Here, we study domain-wall dynamics in coupled Ising layers under asymmetric longitudinal fields. The interlayer coupling is of Heisenberg type and acts as an effective transverse coupling in the emer...

En-Suo Ma, Z. Song · 0 citations

Preprint Sep 2026

Exact phase diagram of the XXZ Heisenberg chain in a staggered magnetic field

We study the phase diagram of the spin-1/2 XXZ Heisenberg chain in a staggered magnetic field. An exact solution is obtained along the phase boundary, where the exchange anisotropy and the staggered-field strength satisfy an exact analytical relation, yielding a highly degenerate manifold of ground states with off-diag...

H.-P. Zhang, Z. Song · 0 citations

Preprint Aug 2026

Quantum Many-Body Scars, Magnon-Pair Condensation, and Hilbert Space Fragmentation in an Anisotropic Heisenberg Model

We investigate a spin-$1/2$ anisotropic Heisenberg model on a lattice consisting of two identical bipartite sublattices. A family of exact eigenstates generated by the restricted spectrum generating algebra (RSGA) constitutes quantum many-body scar states, characterized by subextensive entanglement entropy and supporti...

J. Y. Liu-Sun, Z. Song · 0 citations