---
res:
bibo_abstract:
- We investigate the three-dimensional 0 (2) model near the critical point by Monte
Carlo simulations and calculate the major universal amplitude ratios of the model.
The ratio U-0 = A(+)/A(-) is determined directly from the specific heat data at
zero magnetic field. The data do not, however, allow us to extract an accurate
estimate for a. Instead, we establish a strong correlation of U0 with the value
of a used in the fit. This numerical a-dependence is given by A(+)/A(-) = 1 -
4.20(5)alpha + O(alpha(2)). For the special alpha-values used in other calculations,
we find full agreement with the corresponding ratio values, e.g. that of the shuttle
experiment with liquid helium. On the critical isochore, we obtain the ratio 0.293(9),
and on the critical line the ratio xi(T)(C) / xi(L)(C) = 1.957(10) for the amplitudes
of the transverse and longitudinal correlation lengths. These two ratios are independent
of the alpha- or v-values used here.@eng
bibo_authorlist:
- foaf_Person:
foaf_givenName: A
foaf_name: Cucchieri, A
foaf_surname: Cucchieri
- foaf_Person:
foaf_givenName: Jürgen
foaf_name: Engels, Jürgen
foaf_surname: Engels
foaf_workInfoHomepage: http://www.librecat.org/personId=40338
- foaf_Person:
foaf_givenName: S
foaf_name: Holtmann, S
foaf_surname: Holtmann
- foaf_Person:
foaf_givenName: T
foaf_name: Mendes, T
foaf_surname: Mendes
- foaf_Person:
foaf_givenName: T
foaf_name: Schulze, T
foaf_surname: Schulze
bibo_doi: 10.1088/0305-4470/35/31/301
bibo_issue: '31'
bibo_volume: '35'
dct_date: 2002^xs_gYear
dct_identifier:
- UT:000177801300005
dct_isPartOf:
- http://id.crossref.org/issn/0305-4470
dct_language: eng
dct_publisher: IOP PUBLISHING LTD@
dct_title: Universal amplitude ratios from numerical studies of the three-dimensional
O(2) model@
...