Phase diagram of dilute nuclear matter: Unconventional pairing and the BCS-BEC crossover
Abstract
We report on a comprehensive study of the phase structure of cold, dilute nuclear matter featuring a SD condensate at non-zero isospin asymmetry, within wide ranges of temperatures and densities. We find a rich phase diagram comprising three superfluid phases, namely a Larkin-Ovchinnikov-Fulde-Ferrell phase, the ordinary BCS phase, and a heterogeneous, phase-separated BCS phase, with associated crossovers from the latter two phases to a homogeneous or phase-separated Bose-Einstein condensate of deuterons. The phase diagram contains two tricritical points (one a Lifshitz point), which may degenerate into a single tetracritical point for some degree of isospin asymmetry.
Keywords
Cite
@article{arxiv.1208.0123,
title = {Phase diagram of dilute nuclear matter: Unconventional pairing and the BCS-BEC crossover},
author = {Martin Stein and Xu-Guang Huang and Armen Sedrakian and John W. Clark},
journal= {arXiv preprint arXiv:1208.0123},
year = {2012}
}
Comments
v2: 5 pages, 2 figures, published version; v1: 11 pages, 2 figures, uses RevTex