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

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F17%3A00100357" target="_blank" >RIV/00216224:14310/17:00100357 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1007/JHEP10(2017)024" target="_blank" >http://dx.doi.org/10.1007/JHEP10(2017)024</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/JHEP10(2017)024" target="_blank" >10.1007/JHEP10(2017)024</a>

Result language

angličtina

Original language name

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

Original language description

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.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10303 - Particles and field physics

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of High Energy Physics

ISSN

1029-8479

e-ISSN

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Volume of the periodical

Neuveden

Issue of the periodical within the volume

10

Country of publishing house

US - UNITED STATES

Number of pages

30

Pages from-to

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UT code for WoS article

000412351500004

EID of the result in the Scopus database

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