Lindblad approximation and spin relaxation in quantum electrodynamics
| Autor: | Amour, Laurent, Nourrigat, Jean |
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| Rok vydání: | 2019 |
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| Druh dokumentu: | Working Paper |
| DOI: | 10.1088/1751-8121/ab8e04 |
| Popis: | This article is concerned with the time evolution of a $\frac{1}{2}$-spin particle in a constant external magnetic field with the quantized electromagnetic field (photons). We derive a Lindblad (or GKLS) type approximation of the spin dynamics together with a precise control of the error coming from this approximation. The error term is bounded by $g^2$ where $g$ is the coupling constant of the spin-photon interaction. The point here is the uniformity in time $t>0$ of this error control. |
| Databáze: | arXiv |
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