Morse homology for the heat flow
arXiv:1003.4350 · doi:10.1007/s00209-012-1121-x
Abstract
We use the heat flow on the loop space of a closed Riemannian manifold to construct an algebraic chain complex. The chain groups are generated by perturbed closed geodesics. The boundary operator is defined in the spirit of Floer theory by counting, modulo time shift, heat flow trajectories that converge asymptotically to nondegenerate closed geodesics of Morse index difference one.
89 pages, 3 figures