A method of deforming G-structures
arXiv:1410.5849 · doi:10.1016/j.geomphys.2015.06.006
Abstract
We consider deformations of G-structures via the right action on the frame bundle in a base-point-dependent manner. We investigate which of these deformations again lead to G-structures and in which cases the original and the deformed G-structures define the same instantons. Further, we construct a bijection from connections compatible with the original G-structure to those compatible with the deformed G-structure and investigate the change of intrinsic torsion under the aforementioned deformations. Finally, we consider several examples.
14 pages; v3: references added, published in Journal of Geometry and Physics