hal-00670317, version 1
Coideal algebras from twisted Manin triples
Journal of Geometry and Physics 62, 10 (2012) 2009
Résumé : We propose a new approach to study coideal algebras. It is well-known that Manin triples (or equivalently Lie bi-algebra structures) are the requirement to deform Lie algebras and to obtain quantum groups. In this paper, introducing some particular automorphisms of Manin triples, we define new structures that we call Lie bi-ideal structures. A link with coisotropic subalgebras is explained. We show that their deformation provide coideal algebras. As examples, we recover from our general construction the twisted Yangians, the q-Onsager algebra and the augmented q-Onsager algebra. As an important by-product, we find a new presentation for the twisted Yangians.
- 1 :
- CNRS : UMR5221 – Université Montpellier II - Sciences et techniques
- Domaine : Mathématiques/Algèbres quantiques
Physique/Physique mathématique
Mathématiques/Physique mathématique - Mots-clés : Coideal – Coisotropic subalgebra – Deformation – Manin triple – Onsager algebras – Twisted Yangians – Reflection algebras
- Référence interne : L2C:12-012
- hal-00670317, version 1
- http://hal.archives-ouvertes.fr/hal-00670317
- oai:hal.archives-ouvertes.fr:hal-00670317
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- Soumis le : Mercredi 15 Février 2012, 10:55:21
- Dernière modification le : Mardi 17 Juillet 2012, 10:54:53



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