Ricci flow and the determinant of the Laplacian on non-compact surfaces

Fr�d�ric Rochon
Australian National University
28 March 2010, 2-3pm, Mills Lecture Room 202 (note the location)

Abstract

After introducing the notion of determinant of the Laplacian on a non-compact surface with ends asymptotically isometric to a cusp or a funnel, we will show that in a given conformal class (with 'renormalized area' fixed), this determinant is maximal for the metric of constant scalar curvature, generalizing a well-known result of Osgood, Phillips and Sarnak in the compact case. This will be achieved by combining a corresponding Polyakov formula with some long time existence result for the Ricci flow for such metrics. This is a joint work with P. Albin and C.L. Aldana.

Check also the PDE Seminar page. Enquiries to Florica C�rstea or Daniel Daners.