|
|
Sigmund Kohler |
|
||||
| Quantum Advanced Research Center | ||||||
| home | cv | research | publications | ||||||
On the conundrum of deriving exact solutions from approximate master equationsRoland Doll, David Zueco, Martijn Wubs, Sigmund Kohler, and Peter HänggiChem. Phys. 347, 243 (2008) We derive the exact time-evolution for a general quantum system under the influence of a bosonic bath that causes pure phase-noise and demonstrate that for a Gaussian initial state of the bath, the exact result can be obtained also within a perturbative time-local master equation approach already in second order of the system-bath coupling strength. We reveal that this equivalence holds if the initial state of the bath can be mapped to a Gaussian phase-space distribution function. Moreover, we discuss the relation to the standard Bloch-Redfield approach. arXiv:0707.3938 [quant-ph] |
[QuARC-CSIC]
[ICMM-CSIC]
last modified: 11.5.2026 by
Sigmund Kohler