Partially Massless Spin-2 Fields in String Generated Models

TL;DR

This paper investigates partially massless spin-2 fields within string-generated Einstein-Gauss-Bonnet models, revealing they can have real mass in AdS space, which impacts AdS/CFT correspondence and string theory solutions.

Contribution

It extends the analysis of partially massless spin-2 fields by including curvature corrections in string-inspired models, showing real mass possibilities in AdS space.

Findings

Partially massless spin-2 fields can have real mass in AdS within Einstein-Gauss-Bonnet models.

Curvature corrections alter the mass properties of these fields compared to Einstein gravity.

Implications for AdS/CFT and string theory solutions are discussed.

Abstract

In cosmological backgrounds, there can be 'partially massless' higher spin fields which have fewer degrees of freedom than their massive partners. The equations for the partially massless spin-2 fields are usually taken to be the linearized Einstein equations augmented with a 'tuned' Pauli-Fierz mass. Here, we add more powers of curvatures and show that for the string-generated Einstein-Gauss-Bonnet model, partially massless spin-2 fields have real mass in AdS, in contrast to the Einstein level result. We discuss the implication of this for the AdS/CFT applications and briefly study the C^4-corrected AdS_5 x S^5$ solution in type IIB SUGRA.