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Reconstructing the Density of States by History-Dependent Metadynamics

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Micheletti, Cristian, Laio, Alessandro, Parrinello, Michele·2004·Physical Review Letters

Abstract

We present a novel method for the calculation of the energy density of states D(E) for systems described by classical statistical mechanics. The method builds on an extension of a recently proposed strategy that allows the free-energy profile of a canonical system to be recovered within a preassigned accuracy [Proc. Natl. Acad. Sci. U.S.A. 99, 12562 (2002)]]. The method allows a good control over the error on the recovered system entropy. This fact is exploited to obtain D(E) more efficiently by combining measurements at different temperatures. The accuracy and efficiency of the method are tested for the two-dimensional Ising model (up to size 50 x 50) by comparison with both exact results and previous studies. This method is a general one and should be applicable to more realistic model systems.

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Metadata

Authors
Micheletti, C., Laio, A., & Parrinello, M.
Venue
Physical Review Letters
Published
2004-04-29
Volume
92
Issue
17
Pages
170601-170601
ISSN
  • 0031-9007 (ISSN-L)
  • 1079-7114
OpenAlex
W2079686838
Cited by
162
References
1
FWCI
7.22
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Reconstructing the Density of States by History-Dependent Metadynamics. https://app.cochat.ai/papers/10.1103/physrevlett.92.170601
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Micheletti, C., Laio, A., & Parrinello, M. (2004). Reconstructing the Density of States by History-Dependent Metadynamics. Physical Review Letters. https://doi.org/10.1103/physrevlett.92.170601

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