Quantum dynamics of a qubit coupled with structured bath
| dc.creator | Huang, Peihao | |
| dc.creator | Zheng, H. | |
| dc.date | 2007-07-05 | |
| dc.date | 2007-10-26 | |
| dc.date.accessioned | 2026-07-07T12:05:10Z | |
| dc.date.available | 2026-07-07T12:05:10Z | |
| dc.description | 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 non-equilibrium correlation function $P(t)$ and susceptibility $χ^{\prime\prime}(ω)$ are calculated for both the off-resonance case $Δ\lesssim 0.5Ω$ and the on-resonance case $Δ\sim Ω$. The approach is checked by the Shiba's relation and the sum rule. Besides, the coherent-incoherent transition point $α_c$ can be determined, which has not been demonstrated for the structured bath by previous authors up to our knowledge. | |
| dc.description | 25 pages, 11 figures | |
| dc.identifier | https://arxiv.org/abs/0707.0725 | |
| dc.identifier | http://arxiv.org/abs/0707.0725 | |
| dc.identifier | J. Phys.: Condens. Matter 20 (2008) 395233 | |
| dc.identifier | doi:10.1088/0953-8984/20/39/395233 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/208304 | |
| dc.subject | Disordered Systems and Neural Networks | |
| dc.subject | Mesoscale and Nanoscale Physics | |
| dc.title | Quantum dynamics of a qubit coupled with structured bath | |
| dc.type | text |