13 citations · 60 across the 8 of their papers we have counts for
8 papers
Controlling Symmetries and Quantum Criticality in the Anisotropic Coupled-Top Model
Wen-Jian Mao, Tian Ye, Liwei Duan +1
We investigate the anisotropic coupled-top model, which describes the interactions between two large spins along both and directions. By tuning anisotropic coupling streng…
Superradiant phase transitions in the quantum Rabi model: Overcoming the no-go theorem through anisotropy
Tian Ye, Yan-Zhi Wang, Xiang-You Chen +2
Although the superradiant phase transition (SRPT) is prohibited in the paradigmatic quantum Rabi model due to the no-go theorem caused by the term, we demonstrate tw…
Quantum phase transitions in the triangular coupled-top model
Liwei Duan, Yan-Zhi Wang, Qing-Hu Chen
We study the coupled-top model with three large spins located on a triangle. Depending on the coupling strength, there exist three phases: disordered paramagnetic phase, ferromagne…
Quantum phase transition in the one-dimensional Dicke-Hubbard model with coupled qubits
Shu He, Li-Wei Duan, Yan-Zhi Wang +2
We study the ground state phase diagram of a one-dimensional two qubits Dicke-Hubbard model with XY qubit-qubit interaction. We use a numerical method combing the cluster mean-fiel…
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…
Quantum tricritical point emerging in the spin-boson model with two dissipative spins in staggered biases
Yan-Zhi Wang, Shu He, Liwei Duan +1
We study the spin-boson model (SBM) with two spins in staggered biases by a numerically exact method based on variational matrix product states. Several observables such as the mag…
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…
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…