Friday, August 3, 2012

1208.0123 (Martin Stein et al.)

Phase diagram of dilute nuclear matter: Unconventional pairing and the
BCS-BEC crossover
   [PDF]

Martin Stein, Xu-Guang Huang, Armen Sedrakian, John W. Clark
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 LOFF 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 tri-critical points (one a Lifshitz point), which may degenerate into a single tetra-critical point for some degree of isospin asymmetry.
View original: http://arxiv.org/abs/1208.0123

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