TL;DR
This paper demonstrates a method to localize the gravitino, a spin 3/2 particle, on a brane within supergravity theories by utilizing a scalar field with a coordinate-dependent phase in extra dimensions.
Contribution
It introduces a novel localization mechanism for the gravitino on a brane using a scalar field with a phase-dependent VEV in supergravity models.
Findings
Gravitino can be localized on a brane with an exponential warp factor.
Localization depends on the scalar field's VEV and phase.
The method is applicable within a general supergravity framework.
Abstract
We show how the spin 3/2 gravitino field can be localized on a brane in a general framework of supergravity theory. Provided that a scalar field coupled to the Rarita-Schwinger field develops an vacuum expectation value (VEV) whose phase depends on the 'radial' coordinate in extra internal space, the gravitino is localized on a brane with the exponentially decreasing warp factor by selecting an appropriate value of the VEV.
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