SPECIFIC-HEAT OF SUPERFLUIDS NEAR THE TRANSITION-TEMPERATURE

Citation
N. Schultka et E. Manousakis, SPECIFIC-HEAT OF SUPERFLUIDS NEAR THE TRANSITION-TEMPERATURE, Physical review. B, Condensed matter, 52(10), 1995, pp. 7528-7536
Citations number
42
Categorie Soggetti
Physics, Condensed Matter
ISSN journal
01631829
Volume
52
Issue
10
Year of publication
1995
Pages
7528 - 7536
Database
ISI
SICI code
0163-1829(1995)52:10<7528:SOSNTT>2.0.ZU;2-3
Abstract
The specific heat of the x-y model is studied on cubic lattices of siz es L x L x L and on lattices L x L x H with L much greater than H (i.e ., on lattices representing a film geometry) using the cluster Monte C arlo method. Periodic boundary conditions were applied in all directio ns. In the cubic case we obtained the ratio of the critical exponents alpha/nu from the size dependence of the energy density at the critica l temperature T-lambda. Using finite-size scaling theory, we find that while for both geometries our results scale to universal functions, t hese functions differ for the different geometries. We compare our fin dings to experimental results and results of renormalization-group cal culations.