arXiv:0808.1578 · Acta Physica Polonica A

On the Phase Diagram of Spin-Polarized Attractive Hubbard Model: Weak Coupling Limit

Agnieszka Kujawa, R. Micnas

Published Jul 1, 2008• 8 citations

Abstract

The superfluid properties of the attractive Hubbard model in a Zeeman magnetic field, and in the weak coupling regime were investigated.The temperature and magnetic field dependences of the order parameter were analyzed.Furthermore, the temperature vs. magnetic field and temperature vs. spin polarization phase diagrams for the 2D and 3D lattices were obtained.For some parameters a reentrant transition was found.

DOI: 10.12693/aphyspola.114.43

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