Thermal noise suppression: How much does it cost?

Giovanni Volpe, Jan Wehr, Dmitri Petrov, J. Miguel Rubi

Research output: Contribution to journalArticle

7 Scopus citations

Abstract

In order to stabilize the behavior of noisy systems, confining it around a desirable state, an effort is required to suppress the intrinsic noise. This noise suppression task entails a cost. For the important case of thermal noise in an overdamped system, we show that the minimum cost is achieved when the system control parameters are held constant: any additional deterministic or random modulation produces an increase of the cost. We discuss the implications of this phenomenon for those overdamped systems whose control parameters are intrinsically noisy, presenting a case study based on the example of a Brownian particle optically trapped in an oscillating potential.

Original languageEnglish (US)
Article number095005
JournalJournal of Physics A: Mathematical and Theoretical
Volume42
Issue number9
DOIs
StatePublished - Jul 27 2009

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Statistics and Probability
  • Modeling and Simulation
  • Mathematical Physics
  • Physics and Astronomy(all)

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