Antisymmetric tensor fields in a generalized Randall-Sundrum scenario

TL;DR

This paper investigates how antisymmetric tensor fields behave in a generalized Randall-Sundrum model with a non-zero cosmological constant, revealing that their couplings to brane fermions are enhanced by the cosmological constant.

Contribution

It demonstrates that in a generalized Randall-Sundrum scenario, the couplings of bulk antisymmetric tensor fields are proportional to the brane cosmological constant, unlike the exponential suppression in the original model.

Findings

Couplings are proportional to the brane cosmological constant.

Enhanced interactions occur during large cosmological constant eras.

Zero modes of bulk fields have significant physical effects.

Abstract

Bulk antisymmetric tensor fields of different ranks have been studied in the context of a generalized Randall-Sundrum model with a non-vanishing induced cosmological constant on the visible brane. It is shown that instead of the usual exponential suppression of the couplings of the zero modes of these bulk fields with the brane fermions in the original Randal-Sundrum model, here the couplings are proportional to the brane cosmological constant. Thus in an era of large cosmological constant these fields have significant role in physical phenomena because of their enhanced couplings with the visible brane fermions.