7 citations · 7 across the 1 of their papers we have counts for
3 papers
quant-ph2020★ 7 cited
symmetry of a square-wave modulated two-level system
Liwei Duan, Yan-Zhi Wang, Qing-Hu Chen
We study a non-Hermitian two-level system with square-wave modulated dissipation and coupling. Based on the Floquet theory, we achieve an effective Hamiltonian from which the bound…
cond-mat.stat-mech2020
Rich phase diagram of quantum phases in the anisotropic subohmic spin-boson model
Yan-Zhi Wang, Shu He, Liwei Duan +1
We study the anisotropic spin-boson model (SBM) with the subohmic bath by a numerically exact method based on variational matrix product states. A rich phase diagram is found in th…
cond-mat.stat-mech2018
Quantum phase transitions in the spin-boson model without the counterrotating terms
Yan-Zhi Wang, Shu He, Liwei Duan +1
We study the spin-boson model without the counterrotating terms by a numerically exact method based on variational matrix product states. Surprisingly, the second-order quantum pha…