Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
1993-07-26
Nucl.Phys. B413 (1994) 795-812
Physics
High Energy Physics
High Energy Physics - Lattice
Submited to Nuclear Physics B (FS) Latex file, 24 pages, 11 PostScript figures. Saclay preprint SPhT-93/65
Scientific paper
10.1016/0550-3213(94)90013-2
We determine the interface free energy $F_{o.d.}$ between disordered and ordered phases in the q=10 and q=20 2-d Potts models using the results of multicanonical Monte Carlo simulations on $L^2$ lattices, and suitable finite volume estimators. Our results, when extrapolated to the infinite volume limit, agree to high precision with recent analytical calculations. At the transition point $\beta_t$ the probability distribution function of the energy exhibits two maxima. Their locations have $1/L^2$ corrections, in contradiction with claims of $1/L$ behavior made in the literature. Our data show a flat region inbetween the two maxima which characterizes two domain configurations.
Berg Bernd
Billoire Alain
Neuhaus Thomas
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