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arXiv · 0708.3178

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

Wen-Qiang Ning·Shi-Jian Gu·Chang-Qin Wu·Hai-Qing Lin
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Abstract

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.

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Wen-Qiang Ning, Shi-Jian Gu, Chang-Qin Wu, Hai-Qing Lin. 2007-08-23. Phase diagram of a Bose-Fermi mixture in a one-dimensional optical lattice in terms of fidelity and entanglement. https://doi.org/10.1088/0953-8984%2F20%2F23%2F235236

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