https://doi.org/10.1140/epjc/s10052-023-11878-0
Regular Article - Theoretical Physics
Kinks in cuscuton-like models with two scalar fields
1
Departamento de Licenciaturas em Ciências Naturais/Biologia, Universidade Federal do Maranhão, 65400-000, Codó, MA, Brazil
2
Departamento de Ciências Exatas, Universidade Federal da Paraíba, 58297-000, Rio Tinto, PB, Brazil
Received:
10
May
2023
Accepted:
28
July
2023
Published online:
8
August
2023
This work deals with the presence of localized structures in relativistic systems described by two real scalar fields in two-dimensional spacetime. We consider the usual two-field model with the inclusion of the cuscuton term, which couples the fields regardless the potential. First we follow the steps of previous work to show that the system supports a first-order framework, allowing us to obtain the energy of solutions without knowing their explicit form. The cuscuton term brings versatility into the first-order equations, which gives rise to interesting modifications in the profiles of topological configurations, such as the smooth control over their slope and the internal structure of the energy density.
© The Author(s) 2023
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