Regular Article - Theoretical Physics
Topological solitons in the sigma-cuscuton model
Departamento do Física, Universidade Federal do Ceará, 60455-760, Fortaleza, CE, Brazil
2 Institute of Cosmology, Department of Physics and Astronomy, Tufts University, Medford, 02155, Massachusetts, USA
Accepted: 5 September 2023
Published online: 21 September 2023
Building a multi-field theory with canonical and non-canonical contributions, one studies the topological solitons of the O(3)-sigma model. We propose a model constituted by the O(3)-sigma field, the cuscuton-like neutral scalar field, and Maxwell’s field. We investigate BPS properties considering a theory without interaction. One performs this study by adopting the first-order formalism in a model with contribution non-canonical. Thus, these contributions will preserve the spontaneous symmetry breaking of the system. Concurrently, a non-minimal coupling between the sigma and the Maxwell field is assumed. In this scenario, interesting results arise, i.e., one notes that the solitons have an internal structure and ring-like profile. Furthermore, one observes that the ring-like configurations that emerge are directly related to the contribution of the cuscuton-like term.
© The Author(s) 2023
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