Harmonic almost contact structures via the intrinsic torsion

Details Harmonic almost contact structures via the intrinsic torsion Harmonic almost contact structures via the intrinsic torsion

2008-10-08

arxiv.org/abs/0810.1380v1

Mathematics

Differential Geometry

31 pages

Scientific paper

We go further on the study of harmonicity for almost contact metric structures already initiated by Vergara-Diaz and Wood. By using the intrinsic torsion, we characterise harmonic almost contact metric structures in several equivalent ways and show conditions relating harmonicity and classes of almost contact metric structures. Additionally, we study the harmonicity of such structures as a map into the quotient bundle of the oriented orthonormal frames by the action of the structural group U(n)x1. Finally, by using a Bochner type formula proved by Bor and Hernandez Lamoneda, we display some examples which give the absolute minimum for the energy.

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