Infra-red modification of gravity from asymmetric branes

  title={Infra-red modification of gravity from asymmetric branes},
  author={Antonio Padilla},
We consider a single Minkowski brane sandwiched in between two copies of anti-de Sitter space. We allow the bulk Planck mass and cosmological constant to differ on either side of the brane. Linearized perturbations about this background reveal that gravity can be modified in the infra-red. At intermediate scales, the braneworld propagator mimics four-dimensional GR in that it has the correct momentum dependence. However, it has the wrong tensor structure. Beyond a source dependent scale, we… CONTINUE READING

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