Quantum phase transitions in an interacting atom-molecule boson model
Quantum Gases
2010-07-07 v1 Quantum Physics
Abstract
We study the quantum phase transitions of a model that describes the interconversion of interacting bosonic atoms and molecules. Using a classical analysis, we identify a threshold coupling line separating a molecular phase and a mixed phase. Through studies of the energy gap, von Neumann entanglement entropy, and fidelity, we give evidence that this line is associated to a boundary line in the ground-state phase diagram of the quantum system.
Cite
@article{arxiv.1007.0913,
title = {Quantum phase transitions in an interacting atom-molecule boson model},
author = {Gilberto Santos and Angela Foerster and Jon Links and Eduardo Mattei and Silvio R. Dahmen},
journal= {arXiv preprint arXiv:1007.0913},
year = {2010}
}
Comments
6 pages, 10 figures