What U Can Do: New Solutions and New Challenges Beyond Leading Order

TL;DR

This paper reviews recent advances in using hidden symmetries from T-duality to generate corrected supergravity solutions and discusses challenges from non-perturbative effects related to U-duality.

Contribution

It introduces new methods leveraging T-duality for higher-derivative corrections and examines issues with extending these methods to U-duality symmetries.

Findings

Successful generation of higher-derivative-corrected solutions using T-duality.

Identification of problems caused by non-perturbative effects in U-duality extensions.

Abstract

String theories naturally exhibit dualities that lead to hidden symmetries in the low-energy effective description, which have been used to great effect to generate supergravity solutions. We review recent progress in using hidden symmetries arising from T-duality to generate higher-derivative-corrected solutions, as well as the problems that arise from non-perturbative effects when extending this paradigm to hidden symmetries arising from U-duality.