19 citations · 24 across the 5 of their papers we have counts for
3 papers · 1 filter
Five-dimensional thick branes in the scalar representation of gravity
F. C. E. Lima, F. M. Belchior, C. A. S. Almeida
One examines a codimension-one thick braneworld in the scalar representation of gravity, where is the nonmetricity scalar, and is the boundary term satisfying $R=Q…
Topological and self-dual vortices in a double sigma model with Maxwell coupling
Francisco C. E. Lima, Fernando M. Belchior, Allan R. P. Moreira
In this work, we construct a double O(3)-sigma model minimally coupled to a Maxwell field in (2+1)-dimensional spacetime and investigate the existence of self-dual magnetic vortex…
Scalaron excitation by topological vortices in quadratic gravity on a BTZ black hole background
C. A. S. Almeida, F. C. E. Lima
In three spacetime dimensions, pure Einstein gravity admits no local propagating degrees of freedom, yet nontrivial gravitational backgrounds such as the BTZ black hole provide a n…