Open AccessA POSSIBLE PHASE TRANSITION IN LIQUID He3
Author(s) -
V. J. Emery,
Andrew M. Sessler
Publication year - 1960
Language(s) - English
Resource type - Reports
DOI - 10.2172/937483
Subject(s) - phase transition , particle (ecology) , thermodynamics , phase (matter) , transition temperature , yield (engineering) , chemistry , physics , condensed matter physics , quantum mechanics , superconductivity , oceanography , geology
A possible phase transition in liquid He{sup 3} has been investigated theoretically by generalizing the Bardeen, Cooper, and Schrieffer equations for the transition temperature in the manner suggested by Cooper, Mills, and Sessler. The equations are transformed into a form suitable for numerical solution and an expression is given for the transition temperature at which liquid He{sup 3} will change to highly correlated phase. Following a suggestion of Hottelson, it is shown that the phase transition is a consequence of the interaction of particles in relative D-states. The predicted value of the transition temperature depends on the assumed form of the effective single-particle potential and the interaction between He{sup 3} atoms. The most important aspects of the single-particle potential are related to the thermodynamic properties of the liquid just above the transition temperature. Two choices of the two-particle interaction, oonstituent with experiments, yield a second-order transition at a temperature between approximately 0.01 K and 0.1 K. The highly correlated phase should exhibit enhanced fluidity