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Variational formula for the free energy based on incomplete sampling in a molecular simulation

  • SUNY Buffalo
  • Johns Hopkins University

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

A free-energy bound that originates in the way inadequate sampling in free-energy perturbation (FEP) calculations produces systematic error in the calculated free energy is presented. The direction of the bound is determined only by the direction of perturbation. The bound can be tightened by increasing the sample size and/or adjusting the variational parameter.

Original languageEnglish
Article number026122
Pages (from-to)026122/1-026122/7
JournalPhysical Review E
Volume68
Issue number2 2
StatePublished - Aug 2003

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