Slowly converging Yamabe flows

Carlotto, Alessandro¹ ; Chodosh, Otis¹ ; Rubinstein, Yanir²

¹ Department of Mathematics, Stanford University, Stanford, CA 94305, USA
² Department of Mathematics, University of Maryland, College Park, MD 20742, USA

Geometry & topology, Tome 19 (2015) no. 3, pp. 1523-1568.

Résumé

We characterize the rate of convergence of a converging volume-normalized Yamabe flow in terms of Morse-theoretic properties of the limiting metric. If the limiting metric is an integrable critical point for the Yamabe functional (for example, this holds when the critical point is nondegenerate), then we show that the flow converges exponentially fast. In general, we make use of a suitable Łojasiewicz–Simon inequality to prove that the slowest the flow will converge is polynomially. When the limit metric satisfies an Adams–Simon-type condition we prove that there exist flows converging to it exactly at a polynomial rate. We conclude by constructing explicit examples of this phenomenon. These seem to be the first examples of a slowly converging solution to a geometric flow.

Détail

DOI : 10.2140/gt.2015.19.1523

Classification : 35K55, 53C44, 58K05, 58K55
Keywords: Yamabe flow, nonintegrable critical points, polynomial convergence, Lojasiewicz–Simon inequality, constant scalar curvature

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