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The European Physical Journal B
ISSN: 1434-6028 (printed version)
ISSN: 1434-6036 (electronic version)
Abstract Volume 2 Issue 3 (1998) pp 393-398
Liquid-gas binodal anomaly for systems with pairing transition
H. Stein (1) (a), C. Porthun (2), G. Röpke (1)
(1) Fachbereich Physik, Universität Rostock, Universitätsplatz 3, 18051 Rostock, Germany
(2) Alfred-Wegener-Institut für Polar- und Meeresforschung, 27568 Bremerhaven, Germany
Received: 14 October 1997 / Accepted: 2 December 1997
Abstract: For fermionic model systems with a separable interaction the BCS equations are solved self-consistently. In addition, the possibility of a liquid-gas phase transition is considered by inspecting thermodynamic stability. Different examples of temperature-density phase diagrams are given depending on the parameters of a model interaction. In particular, a liquid-gas binodal anomaly is found due to the superposition of the superfluid and the liquid-gas phase transition.
PACS. 05.30.Fk Fermion systems and electron gas - 64.70.Fx Liquid-vapor transitions - 67.20.+k Quantum effects on the structure and dynamics of nondegenerate fluids (e.g., normal phase liquid 4He)
(a) email: holger@darss.mpg.uni-rostock.de
Online publication: May 27, 1998
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