The Effective Action For Brane Localized Gauge Fields

TL;DR

This paper derives the low-energy effective action for gauge fields localized on a non-BPS p=2 brane in N=1, D=4 superspace, incorporating symmetry considerations and matter interactions.

Contribution

It presents a novel derivation of the effective action including gauge fields on a non-BPS brane using nonlinear realizations of super-Poincare symmetries.

Findings

Invariant interactions of gauge fields and Nambu-Goldstone modes are explicitly constructed.

Matter field interactions with gauge fields are formulated through covariant derivatives.

The approach unifies gauge and supersymmetry considerations in brane effective actions.

Abstract

The low energy effective action including gauge field degrees of freedom on a non-BPS p=2 brane embedded in a N=1, D=4 target superspace is obtained through the method of nonlinear realizations of the associated super-Poincare symmetries. The invariant interactions of the gauge fields and the brane excitation modes corresponding to the Nambu-Goldstone degrees of freedom resulting from the broken space translational symmetry and the target space supersymmetries are determined. Brane localized matter field interactions with the gauge fields are obtained through the construction of the combined gauge and super-Poincare covariant derivatives for the matter fields.