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

Physics

Scientific paper

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Scientific paper

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.

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