Exponential decay for sc-gradient flow lines

Albers P., Frauenfelder U.

Abstract

In this paper we introduce the notion of sc-action functionals and their sc-gradient flow lines. Our approach is inspired by Floer's unregularized gradient flow. The main result of this paper is that under a Morse condition, sc-gradient flow lines have uniform exponential decay towards critical points. The ultimate goal for the future is to construct an M-polyfold bundle over an M-polyfold such that the space of broken sc-gradient flow lines is the zero set of an appropriate sc-section. Here uniform exponential decay is essential. Of independent interest is that we derive exponential decay estimates using interpolation inequalities as opposed to Sobolev inequalities. An advantage is that interpolation inequalities are independent of the dimension of the source space. © 2013 Springer Basel.