Low energy effective theory on a regularized brane in 6D gauged chiral supergravity

Understand

We derive the low energy effective theory on a brane in six-dimensional chiral supergravity.

• The conical 3-brane singularities are resolved by introducing cylindrical codimension one 4-branes whose interiors are capped by a regular spacetime.
• The effective theory is described by the Brans-Dicke (BD) theory with the BD parameter given by $\omega_{\rm BD}=1/2$.
• The BD field is originated from a modulus which is associated with the scaling symmetry of the system.