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2013 | 11 | 6 | 1039-1055
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Deforming metrics of foliations

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Let M be a Riemannian manifold equipped with two complementary orthogonal distributions D and D ⊥. We introduce the conformal flow of the metric restricted to D with the speed proportional to the divergence of the mean curvature vector H, and study the question: When the metrics converge to one for which D enjoys a given geometric property, e.g., is harmonic, or totally geodesic? Our main observation is that this flow is equivalent to the heat flow of the 1-form dual to H, provided the initial 1-form is D ⊥-closed. Assuming that D ⊥ is integrable with compact and orientable leaves, we use known long-time existence results for the heat flow to show that our flow has a solution converging to a metric for which H = 0; actually, under some topological assumptions we can prescribe the mean curvature H.
Opis fizyczny
  • Department of Mathematics, University of Haifa, Mount Carmel, Haifa, 31905, Israel
  • Faculty of Mathematics and Computer Science, Institute of Mathematics of Jagiellonian University, Łojasiewicza 6, 30-348, Kraków, Poland
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