General Theorems on Decoherence in the Thermodynamic Limit
Quantum Physics
2011-08-04 v2 Condensed Matter
High Energy Physics - Theory
Abstract
We extend the results on decoherence in the thermodynamic limit [M. Frasca, Phys. Lett. A {\bf 283}, 271 (2001)] to general Hamiltonians. It is shown that N independent particles, initially properly prepared, have a set of observables behaving classically in the thermodynamic limit. This particular set of observables is then coupled to a quantum system that in this way decoheres so to have the density matrix in a mixed form. This gives a proof of the generality of this effect.
Cite
@article{arxiv.quant-ph/0212064,
title = {General Theorems on Decoherence in the Thermodynamic Limit},
author = {Marco Frasca},
journal= {arXiv preprint arXiv:quant-ph/0212064},
year = {2011}
}
Comments
8 pages, no figures. Version accepted by Physics Letters A