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arXiv · 2110.08277

Kink-antikink scattering in a quantum vacuum

Mainak Mukhopadhyay·Evangelos I. Sfakianakis·Tanmay Vachaspati·George Zahariade
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Abstract

We study kink-antikink scattering in the sine-Gordon model in the presence of interactions with an additional scalar field, $\psi$, that is in its quantum vacuum. In contrast to the classical scattering, now there is quantum radiation of $\psi$ quanta and the kink-antikink may form bound states that resemble breathers of the sine-Gordon model. We quantify the rate of radiation and map the parameters for which bound states are formed. Even these bound states radiate and decay, and eventually there is a transition into long-lived oscillons.

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Mainak Mukhopadhyay, Evangelos I. Sfakianakis, Tanmay Vachaspati, George Zahariade. 2021-10-15. Kink-antikink scattering in a quantum vacuum. https://doi.org/10.1007/jhep04(2022)118

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