Kink-antikink scattering in a quantum vacuum
arXiv:2110.08277 · doi:10.1007/JHEP04(2022)118
Abstract
We study kink-antikink scattering in the sine-Gordon model in the presence of interactions with an additional scalar field, , that is in its quantum vacuum. In contrast to the classical scattering, now there is quantum radiation of 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.
arXiv comment29 pages, 16 figures, published version
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