The transverse entropy functional and the Sasaki-Ricci flow

Collins, Tristan

doi:10.1090/S0002-9947-2012-05601-7

The transverse entropy functional and the Sasaki-Ricci flow
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by Tristan C. Collins PDF

Trans. Amer. Math. Soc. 365 (2013), 1277-1303 Request permission

Abstract:

We introduce two new functionals, inspired by the work of Perelman, which are monotonic along the Sasaki-Ricci flow. We relate their gradient flow, via diffeomorphisms preserving the foliated structure of the manifold, to the transverse Ricci flow. Finally, when the basic first Chern class is positive, we employ these new functionals to prove a uniform $C^{0}$ bound for the transverse scalar curvature, and a uniform $C^{1}$ bound for the transverse Ricci potential along the Sasaki-Ricci flow.

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