40 citations
11 papers
Noncommutative field gas driven inflation
Luciano Barosi, Francisco A. Brito, Amilcar R. Queiroz
We investigate early time inflationary scenarios in an Universe filled with a dilute noncommutative bosonic gas at high temperature. A noncommutative bosonic gas is a gas composed…
Geodesic motion in the neighbourhood of submanifolds embedded in warped product spaces
Fabio Dahia, Carlos Romero, Lucio F. P. Silva +1
We study the classical geodesic motions of nonzero rest mass test particles and photons in (3+1+n)- dimensional warped product spaces. An important feature of these spaces is that…
The ambiguity-free four-dimensional Lorentz-breaking Chern-Simons action
F. A. Brito, J. R. Nascimento, E. Passos +1
The four dimensional Lorentz-breaking finite and determined Chern-Simons like action is generated as a one loop perturbative correction via an appropriate Lorentz-breaking coupling…
On the Dirac Oscillator
R. de Lima Rodrigues
In the present work we obtain a new representation for the Dirac oscillator based on the Clifford algebra The symmetry breaking and the energy eigenvalues for our model…
First-order framework and domain-wall/brane-cosmology correspondence
D. Bazeia, F. A. Brito, F. G. Costa
We address the possibility of finding domain wall solutions from cosmological solutions in brane cosmology. We find first-order equations for corresponding cosmology/domain wall so…
On Matrix Superpotential and Three-Component Normal Modes
R. de Lima Rodrigues, A. F. de Lima, E. R. Bezerra de Mello +1
We consider the supersymmetric quantum mechanics (SUSY QM) with three- component normal modes for the Bogomol'nyi-Prasad-Sommerfield (BPS) states. An explicit form of the SUSY QM m…