Bi-algebras, generalised geometry and T-duality

Details Bi-algebras, generalised geometry and T-duality Bi-algebras, generalised geometry and T-duality

2010-01-14

arxiv.org/abs/1001.2479v1

Physics

High Energy Physics

High Energy Physics - Theory

43 pages

Scientific paper

A study of sigma models whose target space is a group G that admits a compatible Poisson structure is presented. The natural action of O(D,D;Z) on the generalised tangent bundle TG+T*G and a generalisation of the Courant bracket that appears are reviewed. This background provides a concrete example where the generalised geometry and doubled geometry descriptions are both well understood. Connections between the two formalisms are discussed and the world-sheet theory from Hamiltonian and Lagrangian perspectives is investigated. The comparisons between the approaches given by generalised geometry and doubled geometry suggest possible ways of generalising the analysis beyond the known examples.

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