Gasliquid coexistence for the boson squarewell fluid and the He4 binodal anomaly
Abstract
The binodal of a boson squarewell fluid is determined as a function of the particle mass through a quantum Gibbs ensemble Monte Carlo algorithm devised by R. Fantoni and S. Moroni [J. Chem. Phys. (to be published)]. In the infinite mass limit we recover the classical result. As the particle mass decreases, the gasliquid critical point moves at lower temperatures. We explicitly study the case of a quantum delocalization de Boer parameter close to the one of He4. For comparison, we also determine the gasliquid coexistence curve of He4 for which we are able to observe the binodal anomaly below the λtransition temperature.
 Publication:

Physical Review E
 Pub Date:
 August 2014
 DOI:
 10.1103/PhysRevE.90.020102
 arXiv:
 arXiv:1408.0065
 Bibcode:
 2014PhRvE..90b0102F
 Keywords:

 05.30.Jp;
 64.70.F;
 67.10.Fj;
 Boson systems;
 Liquidvapor transitions;
 Quantum statistical theory;
 Condensed Matter  Statistical Mechanics;
 Condensed Matter  Materials Science;
 Quantum Physics
 EPrint:
 4 pages, 3 figures