From the 1 of 11 linked papers with an AI index.
11 papers
Regular fluid of strings black hole with non trivial core and asymptotic structure by gravitational decoupling
Milko Estrada, Luis C. N. Santos, Leonardo G. Barbosa
Cloud-of-strings (CS) geometries provide an effective description of one-dimensional string distributions. However, their central singularity cannot be removed through the standard…
Chiral symmetry and curvature bounds in de Sitter spacetime
L. G. Barbosa
We study chiral symmetry breaking in the Nambu-Jona-Lasinio model on a de Sitter background, treating it as a non-renormalizable effective field theory with a physical ultraviolet…
Vacuum polarization in the Schwarzschild black hole with a global monopole
Leonardo G. Barbosa, Victor H. M. Ramos, João Paulo M. Pitelli
The paper calculates the renormalized vacuum expectation value of a massless scalar field on the horizon of a Schwarzschild black hole that carries a global monopole, using a pertu…
Charged black string immersed in a quintessence fluid and string cloud
Leonardo G. Barbosa, Franciele M. da Silva
We present a new static solution describing a charged black string immersed in a Kiselev-type quintessence fluid and a cloud of strings. The metric and field equations are solved f…
Charged scalar boson in Melvin universe
L. G. Barbosa, L. C. N. Santos, J. V. Zamperlini +2
This work investigates the dynamics of a charged scalar boson in the Melvin universe by solving the Klein-Gordon equation with minimal coupling in both inertial and non-inertial fr…
Kiselev black strings: the charged rotating solutions
Leonardo G. Barbosa, Victor Hugo M. Ramos, Luis Cesar N. dos Santos +1
We investigate the properties of a charged rotating black string immersed in a Kiselev anisotropic fluid in anti-de Sitter (AdS) spacetime. The Einstein-Maxwell equations with an a…