• Medientyp: E-Artikel
  • Titel: Free Energy Calculations with Multiple Gaussian Modified Ensembles
  • Beteiligte: Neuhaus, Th. [VerfasserIn]; Hager, J. [VerfasserIn]
  • Erschienen: APS, 2006
  • Erschienen in: Physical review / E 74, 036702 (2006). doi:10.1103/PhysRevE.74.036702
  • Sprache: Englisch
  • DOI: https://doi.org/10.1103/PhysRevE.74.036702
  • ISSN: 1539-3755
  • Schlagwörter:
  • Entstehung:
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  • Beschreibung: We present a Monte Carlo algorithm, which samples free energies of complex systems. Less probable configurations are populated with the help of a multitude of additional Gaussian weights and parallel tempering is used for efficient Monte Carlo moves within phase space. The algorithm is easily parallelized and can be applied to a wide class of problems. We discuss algorithmic performance for the case of low-temperature phase separation in two-dimensional and three-dimensional Ising models, where we determine the magnetic interface tension. Multiple Gaussian modified ensemble simulations, unlike multicanonical ensemble simulations do not require a priori knowledge of the free energy and are of similar efficiency as multicanonical ensemble and Wang-Landau simulations.
  • Zugangsstatus: Freier Zugang