101 citations · 455 across the 15 of their papers we have counts for
16 papers
State-selective entanglement and point-gap topology in the unidirectional Bose-Hubbard chain
Chuan-Fu Lin, Yu-Chin Tzeng, Po-Yao Chang
We study the effect of repulsive interactions on skin modes and entanglement in the unidirectional Bose--Hubbard model. Although the ground state of this integrable model undergoes…
Fidelity and quantum geometry approach to Dirac exceptional points in diamond nitrogen-vacancy centers
Chia-Yi Ju, Gunnar Möller, Yu-Chin Tzeng
Dirac exceptional points (EPs) represent a novel class of non-Hermitian singularities that, unlike conventional EPs, reside entirely within the parity-time unbroken phase and exhib…
Dissociation of bulk and entanglement phase transitions in the Haldane phase
Yu-Chin Tzeng, Gunnar Möller
Quantum entanglement provides a sensitive probe of topological phases and strong correlations in quantum many-body systems. We revisit the momentum-resolved entanglement spectrum (…
Entanglement Hamiltonian and effective temperature of non-Hermitian quantum spin ladders
Pei-Yun Yang, Yu-Chin Tzeng
Quantum entanglement plays a crucial role not only in understanding Hermitian many-body systems but also in offering valuable insights into non-Hermitian quantum systems. In this p…
Interaction-induced Metal to Topological Insulator Transition
Yu-Chin Tzeng, Po-Yao Chang, Min-Fong Yang
By means of exact diagonalizations, the Bernevig-Hughes-Zhang model at quarter-filling in the limit of strong Hubbard on-site repulsion is investigated. We find that the non-intera…
Exploring quantum phase transitions by the cross derivative of the ground state energy
H. Y. Wu, Yu-Chin Tzeng, Z. Y. Xie +2
In this work, the cross derivative of the Gibbs free energy, initially proposed for phase transitions in classical spin models [Phys. Rev. B 101, 165123 (2020)], is extended for qu…