Year: 2008
Type: article
Abstract: The dynamics of an unbiased spin-boson model with Lorentzian spectral density is investigated theoretically in terms of the perturbation theory based on a unitary transformation. The population difference P ( t ) and susceptibility χ '' (ω) are calculated for both the off-resonance case and the on-resonance case Δ∼Ω. The approach is checked by Shiba's relation and the sum rule. As well, the coherent–incoherent transition point α c can be determined.
Authors: Peihao Huang, H Zheng
Institution: Shanghai Jiao Tong University
Language: English
Subfield: Condensed Matter Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W2086606963