Relying on the recent proposed multicanonical algorithm, we present a numerical simulation of the first-order phase transition in the 2D 10-state Potts model on lattices up to sizes 100\ifmmode\times\else\texttimes\fi{}100. It is demonstrated that the new algorithm lacks an exponentially fast increase of the tunneling time between metastable states as a function of the linear size L of the system. Instead, the tunneling time diverges approximately proportional to ${\mathit{L}}^{2.65}$. On our largest lattice we gain more than 2 orders of magnitude as compared to a standard heat-bath algorithm. As a first physical application we report a high-precision computation of the interfacial free energy per unit area.
Multicanonical ensemble: A new approach to simulate first-order phase transitions.
Published 1992 in Physical Review Letters
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- Publication year
1992
- Venue
Physical Review Letters
- Publication date
1992-01-06
- Fields of study
Medicine, Physics
- Identifiers
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Semantic Scholar, PubMed
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