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Hawking-like emission in kink-soliton escape from a potential well.

Research output: Contribution to journalJournal article

Published

<mark>Journal publication date</mark>11/11/2008
<mark>Journal</mark>New Journal of Physics
Issue113015
Volume10
Number of pages19
Pages1-19
<mark>Original language</mark>English

Abstract

The escape of solitons over a potential barrier is analysed within the framework of a nonlinear Klein–Gordon equation. It is shown that the creation of a kink–antikink pair near the barrier through an internal mode instability can be followed by escape of the kink in a process analogous to Hawking radiation. These results have important implications in a wider context, including stochastic resonance and ratchet systems, which are also discussed.