Qing-Hu Chen

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quant-ph2026

$P T$ -Symmetric Spin--Boson Model with a Continuous Bosonic Spectrum: Exceptional Points and Dynamics

Yong-Xin Zhang, Qing-Hu Chen

This work studies a $P T$ -symmetric non-Hermitian spin--boson model, consisting of a non-Hermitian two-level system coupled to a continuous bosonic bath. The static proper…

quant-ph2026

Emergence of Rich Dissipative Phases in the Anisotropic Quantum Rabi Model Driven by the $A^{2}$ Term

Jun-Ling Wang, Yi-bo Liu, Qing-Hu Chen

The open quantum Rabi model is studied in this work, with the explicit $A^{2}$ term incorporated. It is shown that anisotropy provides a generic and robust mechanism for e…

quant-ph2026

Dissipative phase transitions of the Dicke-Ising model

Jun-Ling Wang, Jiong Li, Qing-Hu Chen

The dissipative phase transitions in the open transverse and longitudinal Dicke-Ising model (DIM), which incorporates nearest-neighbor Ising-type spin interactions into the Dicke f…

PT-Symmetric Spin--Boson Model with a Continuous Bosonic Spectrum: Exceptional Points and Dynamics

Emergence of Rich Dissipative Phases in the Anisotropic Quantum Rabi Model Driven by the A2 Term

Dissipative phase transitions of the Dicke-Ising model

$P T$ -Symmetric Spin--Boson Model with a Continuous Bosonic Spectrum: Exceptional Points and Dynamics

Emergence of Rich Dissipative Phases in the Anisotropic Quantum Rabi Model Driven by the $A^{2}$ Term