Transverse generalized metrics and 2d sigma models
arXiv:1901.08904 · doi:10.1016/j.geomphys.2019.103509
Abstract
We reformulate the compatibility condition between a generalized metric and a small (non-maximal rank) Dirac structure in an exact Courant algebroid found in the context of the gauging of strings and formulated by means of two connections in purely Dirac-geometric terms. The resulting notion, a transverse generalized metric, is also what is needed for the dynamics on the reduced phase space of a string theory.
6 pages, added: explanations about gauging and a definition of Dirac-Riemannian foliations. Version to be published in the new Letters section of the Journal of Geometry and Physics