On Newton's law in supersymmetric braneworld models

Understand

We study the propagation of gravitons within 5-D supersymmetric braneworld models with a bulk scalar field.

• The setup considered here consists of a 5-D bulk spacetime bounded by two 4-D branes localized at the fixed points of an $S^1/Z_2$ orbifold.
• There is a scalar field $\phi$ in the bulk which, provided a superpotential $W(\phi)$, determines the warped geometry of the 5-D spacetime.
• This type of scenario is common in string theory, where the bulk scalar field $\phi$ is related to the volume of small compact extra dimensions.