15-17 January 2020
Santiago de Compostela
Europe/Zurich timezone

T-duality equivalences beyond string theory

16 Jan 2020, 12:30
15m
Santiago de Compostela

Santiago de Compostela

Hospederia de San Martiño Pinario Plaza de la Inmaculada, 3 15704 Santiago de Compostela

Speaker

Alejandro Vilar López (University of Santiago de Compostela)

Description

The leading order low-energy effective action of string theory is symmetric under T-duality transformations, and although these are such that geometric properties of solutions may change substantially, they still preserve the Hawking temperature and entropy of black holes. The question naturally arises whether this fact holds when one includes higher-order corrections. In this work we present a two-parameter family of actions which contains the alpha prime corrected actions of string theories for some values of the parameters and derive the corrected T-duality rules. Then we show that temperature and entropy of solutions with black hole horizons are preserved under the corrected rules, and this is so even for values of the parameters which do not correspond to effective string theory actions, indicating that T-duality might also provide physical equivalences in cases which do not have a known sigma model.

Presentation Materials