Quantum phase transitions in an effective Hamiltonian: fast and slow systems
Quantum Physics
2009-11-13 v1
Abstract
An effective Hamiltonian describing interaction between generic "fast" and a "slow" systems is obtained in the strong interaction limit. The result is applied for studying the effect of quantum phase transition as a bifurcation of the ground state of the "slow subsystem" in the thermodynamic limit. Examples as atom-field and atom-atom interactions are analyzed in detail.
Keywords
Cite
@article{arxiv.0801.4689,
title = {Quantum phase transitions in an effective Hamiltonian: fast and slow systems},
author = {Isabel Sainz and Andrei B. Klimov and Luis Roa},
journal= {arXiv preprint arXiv:0801.4689},
year = {2009}
}