Ke-lin Wang

activity

19972021

most citedExact solvability of the quantum Rabi models within Bogoliubov operators

265 citations · 824 across the 29 of their papers we have counts for

collaborators

Showing 2009Show all

2 papers · 1 filter

cond-mat.quant-gas2009★ 79 cited

Quantum Phase Transition in the Sub-Ohmic Spin-Boson Model: Extended Coherent-state Approach

Yu-Yu Zhang, Qing-Hu Chen, Ke-Lin Wang

We propose a general extended coherent state approach to the qubit (or fermion) and multi-mode boson coupling systems. The application to the spin-boson model with the discretizati…

quant-ph2009★ 2 cited

Berry Phase and Fidelity in the Dicke model with $A^{2}$ term

Yu-Yu Zhang, Tao Liu, Qing-Hu Chen +1

The instability, so-called the quantum-phase-like transition, in the Dicke model with a rotating-wave approximation for finite $N$ atoms is investigated in terms of the Berry phase…

Quantum Phase Transition in the Sub-Ohmic Spin-Boson Model: Extended Coherent-state Approach

Berry Phase and Fidelity in the Dicke model with A2 term

Berry Phase and Fidelity in the Dicke model with $A^{2}$ term