Near-optimal protocols in complex nonequilibrium transformations

Todd Gingrich*, Grant M. Rotskoff, Gavin E. Crooks, Phillip L. Geissler

*Corresponding author for this work

Research output: Contribution to journalArticle

11 Scopus citations

Abstract

The development of sophisticated experimental means to control nanoscale systems has motivated efforts to design driving protocols that minimize the energy dissipated to the environment. Computational models are a crucial tool in this practical challenge. We describe a general method for sampling an ensemble of finite-time, nonequilibrium protocols biased toward a low average dissipation. We show that this scheme can be carried out very efficiently in several limiting cases. As an application, we sample the ensemble of low-dissipation protocols that invert the magnetization of a 2D Ising model and explore how the diversity of the protocols varies in response to constraints on the average dissipation. In this example, we find that there is a large set of protocols with average dissipation close to the optimal value, which we argue is a general phenomenon.

Original languageEnglish (US)
Pages (from-to)10263-10268
Number of pages6
JournalProceedings of the National Academy of Sciences of the United States of America
Volume113
Issue number37
DOIs
StatePublished - Sep 13 2016

Keywords

  • Entropic sampling methods
  • Irreversible thermodynamics
  • Ising model
  • Metropolis algorithm
  • Nonequilibrium

ASJC Scopus subject areas

  • General

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