Bulk Antisymmetric tensor fields coupled to a dilaton in a Randall-Sundrum model

TL;DR

This paper investigates a string-inspired 3-form-dilaton-gravity model within a Randall-Sundrum brane world, revealing suppressed antisymmetric fields, a larger mass spectrum than Kalb-Ramond fields, and potential TeV-scale signals from dilaton-3-form interactions.

Contribution

It provides a detailed analysis of antisymmetric tensor fields coupled to a dilaton in a Randall-Sundrum setup, including mass spectra and interaction couplings, which was not previously explored.

Findings

Antisymmetric tensor fields are exponentially suppressed.

Mass spectrum exceeds that of Kalb-Ramond fields.

Coupling constants are of the order of TeV$^{-1}$, indicating possible experimental detection.

Abstract

A string-inspired 3-form-dilaton-gravity model is studied in a Randall-Sundrum brane world scenario. As expected, the rank-3 antisymmetric field is exponentially suppressed. For each mass level, the mass spectrum is bigger than the one for the Kalb-Ramond field. The coupling between the dilaton and the massless Kaluza-Klein mode of the 3-form is calculated and the coupling constant of the cubic interactions obtained numerically. This coupling are of the order of Tev$^{-1}$, therefore there exist a possibility to find some signal of it at Tev scale.