We study gravity in codimension-2 brane world scenarios with infinite volume extra dimensions. In particular, we consider the case where the brane has non-zero tension. The extra space then is a two-dimensional ``wedge'' with a deficit angle. In such backgrounds we can effectively have the Einstein-Hilbert term on the brane at the classical level if we include higher curvature (Gauss-Bonnet) terms in the bulk. Alternatively, such a term would be generated at the quantum level if the brane matter is not conformal. We study (linearized) gravity in the presence of the Einstein-Hilbert term on the brane in such backgrounds. We find that, just as in the original codimension-2 Dvali-Gabadadze model with a tensionless brane, gravity is almost completely localized on the brane with ultra-light modes penetrating into the bulk.

Gravity on a 3-brane in 6D bulk / Corradini, Olindo; Iglesias, Alberto; Kakushadze, Zurab; Langfelder, Peter. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - B521 (2001):(2001), pp. 96-104. [10.1016/S0370-2693(01)01189-3]

Gravity on a 3-brane in 6D bulk

CORRADINI, Olindo;
2001

Abstract

We study gravity in codimension-2 brane world scenarios with infinite volume extra dimensions. In particular, we consider the case where the brane has non-zero tension. The extra space then is a two-dimensional ``wedge'' with a deficit angle. In such backgrounds we can effectively have the Einstein-Hilbert term on the brane at the classical level if we include higher curvature (Gauss-Bonnet) terms in the bulk. Alternatively, such a term would be generated at the quantum level if the brane matter is not conformal. We study (linearized) gravity in the presence of the Einstein-Hilbert term on the brane in such backgrounds. We find that, just as in the original codimension-2 Dvali-Gabadadze model with a tensionless brane, gravity is almost completely localized on the brane with ultra-light modes penetrating into the bulk.
B521 (2001)
96
104
Gravity on a 3-brane in 6D bulk / Corradini, Olindo; Iglesias, Alberto; Kakushadze, Zurab; Langfelder, Peter. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - B521 (2001):(2001), pp. 96-104. [10.1016/S0370-2693(01)01189-3]
Corradini, Olindo; Iglesias, Alberto; Kakushadze, Zurab; Langfelder, Peter
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11380/1074706
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