Interaction free and decoherence free states
An interaction free evolving state of a closed bipartite system composed of two interacting subsystems is a generally mixed state evolving as if the interaction were a c-number. In this paper we find the characteristic equation of states possessing similar properties for a bipartite systems governed...
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| Veröffentlicht in: | Physica scripta 2015-07, Vol.90 (7), p.74040-7 |
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| container_title | Physica scripta |
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| creator | Chru ci ski, Dariusz Napoli, Anna Guccione, Marina Nale yty, Pawe Messina, Antonino |
| description | An interaction free evolving state of a closed bipartite system composed of two interacting subsystems is a generally mixed state evolving as if the interaction were a c-number. In this paper we find the characteristic equation of states possessing similar properties for a bipartite systems governed by a linear dynamical equation whose generator is sum of a free term and an interaction term. In particular in the case of a small system coupled to its environment, we deduce the characteristic equation of decoherence free states namely mixed states evolving as if the interaction term were effectively inactive. Several examples illustrate the applicability of our theory in different physical contexts. |
| doi_str_mv | 10.1088/0031-8949/90/7/074040 |
| format | Article |
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| language | eng |
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| source | Institute of Physics Journals |
| subjects | Dynamical systems Dynamics Equations of state Evolution generalized subradiant states Generators Joining Mathematical analysis open quantum systems quantum dynamics |
| title | Interaction free and decoherence free states |
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