321 citations · 3.8k across the 138 of their papers we have counts for
9 papers · 1 filter
Exotic Elko on String-Like Defects in Six Dimensions
D. M. Dantas, Roldao da Rocha, C. A. S. Almeida
We analyse the trapping of eigenspinors of the charge conjugation operator with dual helicity (Elko), in thin and thick string-like models with codimension-2. Elko spinor fields de…
Ultra high energy cosmic rays and possible signature of black strings
Rita C. Anjos, Carlos H. Coimbra-Araújo, Roldao da Rocha +1
Ultra high energy cosmic rays (UHECRs) probably originate in extreme conditions in which extra dimension effects might be important. In this paper we calculate the correction in bl…
Information content in brane models with non-constant curvature
R. A. C. Correa, P. H. R. S. Moraes, A. de Souza Dutra +1
In this work we investigate the entropic information-measure in the context of braneworlds with non-constant curvature. The braneworld entropic information is studied for gravity m…
Stability of a tachyon braneworld
Gabriel German, Alfredo Herrera-Aguilar, Andre M. Kuerten +2
Within the braneworld paradigm the tachyonic scalar field has been used to generate models that attempt to solve some of the open problems that physics faces nowadays, both in cosm…
New Spinor Fields on Lorentzian 7-Manifolds
L. Bonora, Roldao da Rocha
This paper deals with the classification of spinor fields according to the bilinear covariants in 7 dimensions. The previously investigated Riemannian case is characterized by eith…
Dark Spinors Hawking Radiation in String Theory Black Holes
R. T. Cavalcanti, Roldao da Rocha
The Hawking radiation spectrum of Kerr-Sen axion-dilaton black holes is derived, in the context of dark spinors tunnelling across the horizon. Since a black hole has a well defined…