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qu an tph ] 2 0 M ar 2 01 9 Open quantum systems in Heisenberg picture
| Content Provider | Semantic Scholar |
|---|---|
| Author | Kheirandish, Fardin |
| Copyright Year | 2019 |
| Abstract | In the framework of Heisenberg picture, an alternative derivation of reduced density matrix of a driven quantum system interacting with its environment is presented. To illustrate the approach, the Hamiltonian of a dissipative quantum oscillator under the influence of an external source is investigated. The reduced density matrix for different initial states of the combined system is obtained from a general formula, and different limiting cases are studied. Exact expressions for the corresponding characteristic function in quantum thermodynamics and Wigner quasi distribution function are found. The process of derivation reveals that it can be applied to a general Hamiltonian where exact or approximate expressions for time-evolution of dynamical observables of the main subsystem are given in Heisenberg representation. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://arxiv-export-lb.library.cornell.edu/pdf/1903.08551 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
