Fluctuations, escape, and nucleation in driven systems: Logarithmic susceptibility

V. N. Smelyanskiy, M. I. Dykman, H. Rabitz, B. E. Vugmeister

Research output: Contribution to journalArticlepeer-review

59 Scopus citations


We analyze the probabilities of large infrequent fluctuations in nonadiabatically driven systems. In a broad range of the driving field magnitudes, the logarithm of the fluctuation probability is linear in the field, and the response can be characterized by a logarithmic susceptibility (LS). We evaluate the activation energies for nucleation, with account taken of the field-induced lifting of time and spatial degeneracy of instantonlike nucleation trajectories. LS for nucleation in systems with nonconserved order parameter is shown to be a nonmonotonic function of ω and k.

Original languageEnglish (US)
Pages (from-to)3113-3116
Number of pages4
JournalPhysical review letters
Issue number17
StatePublished - 1997

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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