Dresden 2013 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 79: Nukleare Astrophysik
HK 79.6: Vortrag
Donnerstag, 7. März 2013, 18:30–18:45, HSZ-403
Phase diagram of dilute nuclear matter: Unconventional pairing and the BCS-BEC crossover — •Martin Stein and Armen Sedrakian — Institut für Theoretische Physik, Goethe-UniversitätFrankfurt, Max-von-Laue-Straße 1, D-60438 Frankfurt, Germany
We report on a comprehensive study of the phase structure of cold, dilute nuclear matter featuring a 3S1-3D1 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.