Mathematics – Differential Geometry
Scientific paper
2000-11-14
Mathematics
Differential Geometry
32 pages, LaTeX2e amsart.cls
Scientific paper
We prove a semi-Riemannian version of the celebrated Morse Index Theorem for geodesics in semi-Riemannian manifolds; we consider the general case of both endpoints variable on two submanifolds. The key role of the theory is played by the notion of the {\em Maslov index} of a semi-Riemannian geodesic, which is a homological invariant and it substitutes the notion of geometric index in Riemannian geometry. Under generic circumstances, the Maslov index of a geodesic is computed as a sort of {\em algebraic count} of the conjugate points along the geodesic. For non positive definite metrics the index of the index form is always infinite; in this paper we prove that the space of all variations of a given geodesic has a {\em natural} splitting into two infinite dimensional subspaces, and the Maslov index is given by the difference of the index and the coindex of the restriction of the index form to these subspaces. In the case of variable endpoints, two suitable correction terms, defined in terms of the endmanifolds, are added to the equality. Using appropriate change of variables, the theory is entirely extended to the more general case of {\em symplectic differential systems}, that can be obtained as linearizations of the Hamilton equations.
Piccione Paolo
Tausk Daniel V.
No associations
LandOfFree
The Morse Index Theorem in semi-Riemannian Geometry does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The Morse Index Theorem in semi-Riemannian Geometry, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Morse Index Theorem in semi-Riemannian Geometry will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-251305