Phase diagram of a Bose-Fermi mixture in a one-dimensional optical lattice in terms of fidelity and entanglement

We study the ground-state phase diagram of a Bose-Fermi mixture loaded in a one-dimensional optical lattice by computing the ground-state fidelity and quantum entanglement. We find that the fidelity is able to signal quantum phase transitions between the Luttinger liquid phase, the density-wave phas...

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Bibliographic Details
Published in:arXiv.org 2007-08
Main Authors: Wen-Qiang, Ning, Shi-Jian, Gu, Chang-Qin, Wu, Hai-Qing Lin
Format: Article
Language:English
Subjects:
Density
Ising model
Liquid phases
Optical lattices
Phase diagrams
Phase separation
Phase transitions
Quantum entanglement
Quantum mechanics
Quantum theory
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Summary:We study the ground-state phase diagram of a Bose-Fermi mixture loaded in a one-dimensional optical lattice by computing the ground-state fidelity and quantum entanglement. We find that the fidelity is able to signal quantum phase transitions between the Luttinger liquid phase, the density-wave phase, and the phase separation state of the system; and the concurrence can be used to signal the transition between the density-wave phase and the Ising phase.
ISSN:2331-8422
DOI:10.48550/arxiv.0708.3178