Dissipative Dynamics in Open Fermionic Chains
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arXiv
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| Hauptverfasser: | , |
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| Format: | Preprint |
| Veröffentlicht: |
2023
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| _version_ | 1866910516656472064 |
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| author | Karanikas, A. I. Pavlou, G. E. |
| author_facet | Karanikas, A. I. Pavlou, G. E. |
| contents | By merging the Feynman-Vernon's approach with the out-of-equilibrium Keldysh-Schwinger formalism, we construct the reduced generating functional through which all the time-dependent correlation functions of an open fermionic system can be directly derived by applying the appropriate functional derivatives. As a concrete example, we investigate the transverse Ising model, we derive the covariance matrix at the steady state of the system and we investigate its critical behavior. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2303_02747 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Dissipative Dynamics in Open Fermionic Chains Karanikas, A. I. Pavlou, G. E. Quantum Physics Statistical Mechanics By merging the Feynman-Vernon's approach with the out-of-equilibrium Keldysh-Schwinger formalism, we construct the reduced generating functional through which all the time-dependent correlation functions of an open fermionic system can be directly derived by applying the appropriate functional derivatives. As a concrete example, we investigate the transverse Ising model, we derive the covariance matrix at the steady state of the system and we investigate its critical behavior. |
| title | Dissipative Dynamics in Open Fermionic Chains |
| topic | Quantum Physics Statistical Mechanics |
| url | https://arxiv.org/abs/2303.02747 |