Artículos de revistas
Black string corrections in variable tension braneworld scenarios
Fecha
2012-02-24Registro en:
Physical Review D. College Pk: Amer Physical Soc, v. 85, n. 4, p. 9, 2012.
1550-7998
10.1103/PhysRevD.85.046009
WOS:000300665500007
WOS000300665500007.pdf
Autor
Universidade Federal do ABC (UFABC)
Universidade Estadual Paulista (Unesp)
Institución
Resumen
Braneworld models with variable tension are investigated, and the corrections on the black string horizon along the extra dimension are provided. Such corrections are encrypted in additional terms involving the covariant derivatives of the variable tension on the brane, providing profound consequences concerning the black string horizon variation along the extra dimension, near the brane. The black string horizon behavior is shown to be drastically modified by the terms corrected by the brane variable tension. In particular, a model motivated by the phenomenological interesting case regarding Eotvos branes is investigated. It forthwith provides further physical features regarding variable tension braneworld scenarios, heretofore concealed in all previous analysis in the literature. All precedent analysis considered uniquely the expansion of the metric up to the second order along the extra dimension, which is able to evince solely the brane variable tension absolute value. Notwithstanding, the expansion terms aftermath, further accomplished in this paper from the third order on, elicits the successive covariant derivatives of the brane variable tension, and their respective coupling with the extrinsic curvature, the Weyl tensor, and the Riemann and Ricci tensors, as well as the scalar curvature. Such additional terms are shown to provide sudden modifications in the black string horizon in a variable tension braneworld scenario.