Campostrini, Massimo and Hasenbusch, Martin and Pelissetto, Andrea and Vicari, Ettore (2006) The critical exponents of the superfluid transition in He4. Physical review. B, Condensed matter and materials physics, 74 . p. 144506. ISSN 1550-235X
Full text not available from this repository.Abstract
We improve the theoretical estimates of the critical exponents for the three-dimensional XY universality class, which apply to the superfluid transition in He4 along the lambda-line of its phase diagram. We obtain the estimates alpha=-0.0151(3), nu=0.6717(1), eta=0.0381(2), gamma=1.3178(2), beta=0.3486(1), and delta=4.780(1). Our results are obtained by finite-size scaling analyses of high-statistics Monte Carlo simulations up to lattice size L=128 and resummations of 22nd-order high-temperature expansions of two improved models with suppressed leading scaling corrections. We note that our result for the specific-heat exponent alpha disagrees with the most recent experimental estimate alpha=-0.0127(3) at the superfluid transition of He4 in microgravity environment.
Item Type: | Article |
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Additional Information: | Imported from arXiv |
Subjects: | Area02 - Scienze fisiche > FIS/02 - Fisica teorica, modelli e metodi matematici |
Divisions: | Dipartimenti (until 2012) > DIPARTIMENTO DI FISICA " E. FERMI" |
Depositing User: | dott.ssa Sandra Faita |
Date Deposited: | 09 Apr 2015 15:42 |
Last Modified: | 09 Apr 2015 15:42 |
URI: | http://eprints.adm.unipi.it/id/eprint/1808 |
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