J 2017

On non-abelian T-duality and deformations of supercoset string sigma-models

BORSATO, Riccardo and Linus WULFF

Basic information

Original name

On non-abelian T-duality and deformations of supercoset string sigma-models

Authors

BORSATO, Riccardo (380 Italy) and Linus WULFF (752 Sweden, guarantor, belonging to the institution)

Edition

Journal of High Energy Physics, New York, SPRINGER, 2017, 1029-8479

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10303 Particles and field physics

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

Impact factor

Impact factor: 5.541

RIV identification code

RIV/00216224:14310/17:00100357

Organization unit

Faculty of Science

DOI

UT WoS

000412351500004

Keywords in English

Integrable Field Theories; String Duality

Tags

Změněno: 9/4/2018 23:07, Ing. Nicole Zrilić

Abstract

V originále

We elaborate on the class of deformed T-dual (DTD) models obtained by first adding a topological term to the action of a supercoset sigma model and then performing (non-abelian) T-duality on a subalgebra (g) over tilde of the superisometry algebra. These models inherit the classical integrability of the parent one, and they include as special cases the socalled homogeneous Yang-Baxter sigma models as well as their non-abelian T-duals. Many properties of DTD models have simple algebraic interpretations. For example we show that their (non-abelian) T-duals - including certain deformations - are again in the same class, where (g) over tilde gets enlarged or shrinks by adding or removing generators corresponding to the dualised isometries. Moreover, we show that Weyl invariance of these models is equivalent to (g) over tilde being unimodular; when this property is not satisfied one can always remove one generator to obtain a unimodular (g) over tilde, which is equivalent to (formal) T-duality. We also work out the target space super fields and, as a by-product, we prove the conjectured transformation law for Ramond-Ramond (RR) fields under bosonic non-abelian T-duality of supercosets, generalising it to cases involving also fermionic T-dualities.