Low energy effective theory on a regularized brane in six-dimensional flux compactifications

Details Low energy effective theory on a regularized brane in six-dimensional flux compactifications Low energy effective theory on a regularized brane in six-dimensional flux compactifications

2007-08-19

arxiv.org/abs/0708.2534v2

Phys.Rev.D76:104052,2007

Physics

High Energy Physics

High Energy Physics - Theory

11 pages, minor corrections, accepted for publication in Physical Review D

Scientific paper

10.1103/PhysRevD.76.104052

Conical brane singularities in six-dimensional flux compactification models can be resolved by introducing cylindrical codimension-one branes with regular caps instead of 3-branes (a la Kaluza-Klein braneworlds with fluxes). In this paper, we consider such a regularized braneworld with axial symmetry in six-dimensional Einstein-Maxwell theory. We derive a low energy effective theory on the regularized brane by employing the gradient expansion approach, and show that standard four-dimensional Einstein gravity is recovered at low energies. Our effective equations extend to the nonlinear gravity regime, implying that conventional cosmology can be reproduced in the regularized braneworld.

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