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

Research output: Contribution to journalJournal article


Journal publication date11/11/2008
JournalNew Journal of Physics
Number of pages19
Original languageEnglish


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.