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Transactions of the American Mathematical Society
Transactions of the American Mathematical Society
ISSN 1088-6850(online) ISSN 0002-9947(print)


Variational problems on contact Riemannian manifolds

Author: Shukichi Tanno
Journal: Trans. Amer. Math. Soc. 314 (1989), 349-379
MSC: Primary 53C15; Secondary 32F25, 58G30
MathSciNet review: 1000553
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Abstract: We define the generalized Tanaka connection for contact Riemannian manifolds generalizing one for nondegenerate, integrable $ {\text{CR}}$ manifolds. Then the torsion and the generalized Tanaka-Webster scalar curvature are defined properly. Furthermore, we define gauge transformations of contact Riemannian structure, and obtain an invariant under such transformations. Concerning the integral related to the invariant, we define a functional and study its first and second variational formulas. As an example, we study this functional on the unit sphere as a standard contact manifold.

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Additional Information

PII: S 0002-9947(1989)1000553-9
Keywords: Contact structure, Tanaka-Webster scalar curvature, gauge transformation of contact Riemannian structure
Article copyright: © Copyright 1989 American Mathematical Society

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