Holomorphic string algebroids
Mario Garcia-Fernandez, Roberto Rubio, Carl Tipler

TL;DR
This paper introduces holomorphic string algebroids as Courant extensions of Atiyah Lie algebroids, classifies them using Cech cohomology, and constructs their deformations via a differential graded Lie algebra.
Contribution
It defines the category of holomorphic string algebroids, provides a classification in terms of Cech cohomology, and develops a deformation theory using differential graded Lie algebras.
Findings
Classification of string algebroids via Cech cohomology.
Construction of a locally complete family of deformations.
Identification of natural candidates for Atiyah algebroids of holomorphic string groups.
Abstract
We introduce the category of holomorphic string algebroids, whose objects are Courant extensions of Atiyah Lie algebroids of holomorphic principal bundles, as considered by Bressler, and whose morphisms correspond to inner morphisms of the underlying holomorphic Courant algebroids in the sense of Severa. This category provides natural candidates for Atiyah Lie algebroids of holomorphic principal bundles for the (complexified) string group and their morphisms. Our main results are a classification of string algebroids in terms of Cech cohomology, and the construction of a locally complete family of deformations of string algebroids via a differential graded Lie algebra.
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