Linear dynamics of quantum-classical hybrids

Details Linear dynamics of quantum-classical hybrids Linear dynamics of quantum-classical hybrids

2011-11-09

arxiv.org/abs/1111.2276v2

Physics

Quantum Physics

23 pages; 1 reference corrected, 3 references and section 5.4. added

Scientific paper

A new formulation of quantum-classical hybrid dynamics is presented, which concerns the direct coupling of classical and quantum mechanical degrees of freedom. It is of interest for applications in quantum mechanical approximation schemes and may be relevant for the foundations of quantum mechanics, in particular, when it comes to experiments exploring the quantum-classical border. The present linear theory differs from the nonlinear ensemble theory of Hall and Reginatto, but shares with it to fullfill all consistency requirements discussed in the literature, while earlier attempts failed in this respect. Our work is based on the representation of quantum mechanics in the framework of classical analytical mechanics by A. Heslot, showing that notions of states in phase space, observables, Poisson brackets, and related canonical transformations can be naturally extended to quantum mechanics. This is suitably generalized for quantum-classical hybrids here.

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