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Dynamical Radion Superfield in Five-dimensional Action

Dynamical Radion Superfield in Five-dimensional Action

We clarify the radion superfield dependence of 5D N = 1 superspace action. The radion is treated as a dynamical field and appears in the action with the correct mode function. Our derivation is systematic and based on the superconformal formulation of 5D supergravity. We can read off the couplings …