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Kink-antikink scattering in a quantum vacuum

Journal Article · · Journal of High Energy Physics (Online)
 [1];  [2];  [3];  [2]
  1. Arizona State University, Tempe, AZ (United States); Arizona State Univ., Tempe, AZ (United States)
  2. Barcelona Institute of Science and Technology (BIST) (Spain)
  3. Arizona State University, Tempe, AZ (United States)
We study kink-antikink scattering in the sine-Gordon model in the presence of interactions with an additional scalar field, ψ, that is in its quantum vacuum. In contrast to the classical scattering, now there is quantum radiation of ψ 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.
Research Organization:
Arizona State University, Tempe, AZ (United States)
Sponsoring Organization:
European Union’s Horizon 2020; Generalitat de Catalunya; La Caixa Foundation; Marie Skłodowska-Curie grant; National Science Foundation (NSF); Spanish Ministry of Science and Innovation; USDOE Office of Science (SC), High Energy Physics (HEP)
Grant/Contract Number:
SC0019470
OSTI ID:
1976470
Journal Information:
Journal of High Energy Physics (Online), Journal Name: Journal of High Energy Physics (Online) Journal Issue: 4 Vol. 2022; ISSN 1029-8479
Publisher:
Springer NatureCopyright Statement
Country of Publication:
United States
Language:
English

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