Gravitational Redshift in Einstein-Kalb-Ramond Spacetime and Randall-Sundrum Scenario

TL;DR

This paper investigates how gravitational redshift is affected by Kalb-Ramond fields in string-inspired spacetimes and how extra dimensions in the Randall-Sundrum model influence this effect, aligning with Standard Model constraints.

Contribution

It demonstrates the modification of gravitational redshift due to Kalb-Ramond fields and shows how Randall-Sundrum extra dimensions suppress this shift, providing bounds consistent with Standard Model data.

Findings

Kalb-Ramond field modifies gravitational redshift predictions.

Randall-Sundrum scenario suppresses the additional redshift.

Derived bounds on warp factor align with Standard Model constraints.

Abstract

It is shown that the gravitational redshift as predicted by Einstein's theory, is modified in presence of second rank antisymmetric tensor (Kalb-Ramond) field in a string inspired background spacetime.In presence of extra dimensions, the Randall-Sundrum brane world scenario is found to play a crucial role in suppressing this additional shift. The bound on the value of the warp factor is determined from the redshift data and is found to be in good agreement with that determined from the requirements of Standard model.