Generalized Purity and Quantum Phase Transition for Bose-Einstein condensates in a Symmetric Double Well
Quantum Physics
2009-10-17 v1
Abstract
The generalized purity is employed for investigating the process of coherence loss and delocalization of the Q-function in the Bloch sphere of a two-mode Bose-Einstein condensate in a symmetrical double well with cross-collision. Quantum phase transition of the model is signaled by the generalized purity as a function of an appropriate parameter of the Hamiltonian and the number of particles (N). A power law dependence of the critical parameter with N is derived.
Keywords
Cite
@article{arxiv.0812.4387,
title = {Generalized Purity and Quantum Phase Transition for Bose-Einstein condensates in a Symmetric Double Well},
author = {Thiago F. Viscondi and K. Furuya and M. C. de Oliveira},
journal= {arXiv preprint arXiv:0812.4387},
year = {2009}
}
Comments
4 pages, 4 figures