https://doi.org/10.1140/epjc/s10052-021-09434-9
Regular Article - Theoretical Physics
Internal structure of cuscuton Bloch brane
1
Departamento de Física, Universidade Federal da Paraíba, 58051-970, João Pessoa, PB, Brazil
2
Unidade Acadêmica de Física, Universidade Federal de Campina Grande, 58429-900, Campina Grande, PB, Brazil
3
Departamento de Biotecnologia, Universidade Federal da Paraíba, 58051-900, João Pessoa, PB, Brazil
Received:
16
February
2021
Accepted:
7
July
2021
Published online:
15
July
2021
This work deals with thick branes in bulk with a single extra dimension modeled by a two-field configuration. We first consider the inclusion of the cuscuton to also control the dynamics of one of the fields and investigate how it contributes to change the internal structure of the configuration in two distinct situations, with the standard and the asymmetric Bloch brane. The results show that the branes get a rich internal structure, with the geometry presenting a novel behavior which is also governed by the parameter that controls the strength of the cuscuton term. We also study the case where the dynamics of one of the two fields is only described by the cuscuton. All the models support analytical solutions which are stable against fluctuations in the metric, and the main results unveil significant modifications in the warp factor and energy density of the branes.
© The Author(s) 2021
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Funded by SCOAP3
