Models of modified F(R,T) and cuscuton braneworld

¹ Departamento de Física, Universidade Federal da Paraíba - 58051-970 João Pessoa, PB, Brazil
² Escola Técnica de Saúde de Cajazeiras, Universidade Federal de Campina Grande 58900-000 Cajazeiras, PB, Brazil

^(a) bazeia@fisica.ufpb.br (corresponding author)

Received: 29 July 2021
Accepted: 9 August 2021

Abstract

This work deals with braneworld models in the presence of scalar fields in a five-dimensional warped geometry with a single extra dimension of infinite extent. We consider generalized models in the presence of the Ricci scalar, the trace of the stress-energy tensor and the cuscuton contribution. The models describe novel braneworld scenarios and the investigations consider distinct possibilities, from which we show how the brane may change to become thinner, although keeping gravitational stability and the gravity zero mode under strict control. Moreover, we did not identify any split behavior in the warp factor in the presence of the cuscuton and the trace of the stress-energy tensor.