Quantum critical point of spin-boson model and infrared catastrophe in bosonic bath

Critical and Strong-Coupling Phases in One- and Two-Bath Spin-Boson Models

(2012) Cheng Guo et al.   PHYSICAL REVIEW LETTERS

Entanglement evolution and quantum phase transition of biaseds=1/2spin-boson model

(2011) Chunjian Zhao et al.   PHYSICAL REVIEW E

Generalized Polaron Ansatz for the Ground State of the Sub-Ohmic Spin-Boson Model: An Analytic Theory of the Localization Transition

(2011) Alex W. Chin et al.   PHYSICAL REVIEW LETTERS

Quantum phase transition in the sub-Ohmic spin-boson model: An extended coherent-state approach

(2010) Yu-Yu Zhang et al.   PHYSICAL REVIEW B

Quantum Phase Transition in the Sub-Ohmic Spin-Boson Model: Quantum Monte Carlo Study with a Continuous Imaginary Time Cluster Algorithm

(2009) André Winter et al.   PHYSICAL REVIEW LETTERS

Sparse Polynomial Space Approach to Dissipative Quantum Systems: Application to the Sub-Ohmic Spin-Boson Model

(2009) A. Alvermann et al.   PHYSICAL REVIEW LETTERS