Autoresonant transition in the presence of noise and self-fields

I. Barth, L. Friedland, E. Sarid, A. G. Shagalov

Research output: Contribution to journalArticlepeer-review

24 Scopus citations


A sharp threshold for resonant capture of an ensemble of trapped particles driven by chirped frequency oscillations is analyzed. It is shown that at small temperatures T, the capture probability versus driving amplitude is a smoothed step function with the step location and width scaling as α3/4 (α being the chirp rate) and (αT)1/2, respectively. Strong repulsive self-fields reduce the width of the threshold considerably, as the ensemble forms a localized autoresonant macroparticle.

Original languageEnglish
Article number155001
JournalPhysical Review Letters
Issue number15
StatePublished - 7 Oct 2009
Externally publishedYes

ASJC Scopus subject areas

  • General Physics and Astronomy


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