107 citations · 525 across the 22 of their papers we have counts for
17 papers · 1 filter
Null geodesics around a black hole with weakly coupled global monopole charge
Mohsen Fathi, J. R. Villanueva, Thiago R. P. Caramês +1
In this paper, we study an asymptotically flat black hole spacetime with weakly nonminimally coupled monopole charge. We analytically and numerically investigate light ray propagat…
Nonminimal global monopole
Thiago R. P. Caramês
In this paper, we investigate the gravitational effects of a global monopole that couples nonminimally to gravity. Considering a coupling parameter of arbitrary strength, we have o…
To conserve, or not to conserve: A review of nonconservative theories of gravity
Hermano Velten, Thiago R. P. Caramês
Apart from the familiar structure firmly-rooted in the general relativistic field equations where the energy--momentum tensor has a null divergence i.e., it conserves, there exists…
Global monopole as a generator of a bulk-brane structure in Brans-Dicke bulk gravity
Thiago R. P. Caramês, J. M. Hoff da Silva
We investigate a braneworld model generated by a global monopole in the context of Brans-Dicke gravity. After solving the dynamical equations we found a model capable to alleviate…
Dark energy with zero pressure: Accelerated expansion and large scale structure in action-dependent Lagrangian theories
Thiago R. P. Caramês, H. Velten, J. C. Fabris +1
We develop a cosmological model based on action-dependent Lagrangian theories. The main feature here is the nonconservation of the energy momentum tensor due to the nontrivial geom…
Some effects of non-conservative gravity on cosmic string configurations
E. A. F. Bragança, Thiago R. P. Caramês, Júlio C. Fabris +1
We investigate some consequences of a specific non-conservation of the energy-momentum tensor on the physics of certain cosmic string configurations. This non-conservation is induc…