6 papers
Reduced-Order Variational Deterministic-Particle-Based Scheme for Fokker-Planck Equations in Microscopic Polymer Dynamics
L. Fang, X. Bao, Z. Song +2
This study proposes an acceleration technique for the computational challenges in extending the variational deterministic-particle-based scheme (VDS) [Bao et al., Journal of Comput…
Hilbert Space Fragmentation in Hardcore Bose and Fermi Hubbard Models on Generalized Lieb Lattices
D. K. He, Z. Song
We study the Hilbert space fragmentation (HSF) in hardcore Bose and Fermi Hubbard models in the framework of the restricted spectrum generating algebra (RSGA). We present a family…
-pairing states in the Hubbard model with non-uniform Hubbard interaction
D. K. He, Z. Song
The existence of -pairing eigenstates in the fermionic Hubbard model is fundamentally rooted in the -pairing symmetry, which may hold for systems with non-uniform Hubbard i…
Higher order coherence as witness of exceptional point in Hermitian bosonic Kitaev dimer
D. K. He, Z. Song
The non-analyticity induced by exceptional points (EPs) has manifestations not only in non-Hermitian but also in Hermitian systems. In this work, we focus on a minimal Hermitian bo…
Detecting the Chern number via quench dynamics in two independent chains
D. K. He, Y. B. Shi, Z. Song
The Chern number, as a topological invariant, characterizes the topological features of a 2D system and can be experimentally detected through Hall conductivity. In this work, we i…
Hidden exceptional point, localization-delocalization phase transition in Hermitian bosonic Kitaev model
D. K. He, Z. Song
Exceptional points (EPs), a unique feature of non-Hermitian systems, represent degeneracies in non-Hermitian operators that likely do not occur in Hermitian systems. Nevertheless,…