English

$\alpha$-connections in generalized geometry

Differential Geometry 2025-08-04 v1

Abstract

We consider a family of α\alpha-connections defined by a pair of generalized dual quasi-statistical connections (^,^)(\hat{\nabla},\hat{\nabla}^*) on the generalized tangent bundle (TMTM,hˇ)(TM\oplus T^*M, \check{h}) and determine their curvature, Ricci curvature and scalar curvature. Moreover, we provide the necessary and sufficient condition for ^\hat \nabla^* to be an equiaffine connection and we prove that if hh is symmetric and h=0\nabla h=0, then (TMTM,hˇ,^(α),^(α))(TM\oplus T^*M, \check{h}, \hat{\nabla}^{(\alpha)}, \hat{\nabla}^{(-\alpha)}) is a conjugate Ricci-symmetric manifold. Also, we characterize the integrability of a generalized almost product, of a generalized almost complex and of a generalized metallic structure w.r.t. the bracket defined by the α\alpha-connection. Finally we study α\alpha-connections defined by the twin metric of a pseudo-Riemannian manifold, (M,g)(M,g), with a non-degenerate gg-symmetric (1,1)(1,1)-tensor field JJ such that dJ=0d^\nabla J=0, where \nabla is the Levi-Civita connection of gg.

Keywords

Cite

@article{arxiv.2004.05036,
  title  = {$\alpha$-connections in generalized geometry},
  author = {Adara M. Blaga and Antonella Nannicini},
  journal= {arXiv preprint arXiv:2004.05036},
  year   = {2025}
}

Comments

29 pages

R2 v1 2026-06-23T14:46:53.996Z