Competing order parameters and a tricritical point with a difference

Arghya Dutta; J. K. Bhattacharjee

doi:10.1016/j.physb.2012.05.050

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arXiv · 1011.6521

Competing order parameters and a tricritical point with a difference

Arghya Dutta·J. K. Bhattacharjee

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Abstract

We propose a mean-field, phenomenological Ginzburg-Landau free energy functional with two competing order parameters for a two-component, spin-polarized Fermi gas. This free energy supports a tricritical point which is different from the conventional one and this change offers a correct understanding of the experimental phase diagram of imbalanced Fermi systems (Shin et al, Nature, 2008). The specific heat also happens to be different than in standard theory.

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Arghya Dutta, J. K. Bhattacharjee. 2012-07-15. Competing order parameters and a tricritical point with a difference. https://doi.org/10.1016/j.physb.2012.05.050

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