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oai:docta.ucm.es:20.500.14352/60092023-08-26T10:14:56Zcom_20.500.14352_14col_20.500.14352_15

00925njm 22002777a 4500 dc García Moreno, Gerardo author Ares Santos, Laura author Luis Aina, Alfredo author 2019-12 In this work we provide a complete model of semiclassical theories by including back-reaction and correlation into the picture. We specially aim at the interaction between light and a two-level atom, and we also illustrate it via the coupling of two harmonic oscillators. Quantum and classical systems are treated on the same grounds via the Wigner-Weyl phase-space correspondence of the quantum theory. We show that this model provides a suitable mixture of the quantum and classical degrees of freedom, including the fact that the evolution transfers nonclassical features to the classical subsystem and nonquantum behaviour to the quantum subsystem. In that sense, we can no longer distinguish between classical and quantum variables and we need to talk about a hybrid model. (C) 2019 Elsevier Inc. All rights reserved. 0003-4916 10.1016/j.aop.2019.167961 https://hdl.handle.net/20.500.14352/6009 http://dx.doi.org/10.1016/j.aop.2019.167961 https://www.sciencedirect.com Phase space quantum-classical hybrid model