  In the limit epsilon to 0 we analyze the generators H_epsilon of families of
reversible jump processes in R^d associated with a class of symmetric non-local
Dirichlet-forms and show exponential decay of the eigenfunctions. The
exponential rate function is a Finsler distance, given as solution of a certain
eikonal equation. Fine results are sensitive to the rate function being C^2 or
just Lipschitz. Our estimates are analog to the semi-classical Agmon estimates
for differential operators of second order. They generalize and strengthen
previous results on the lattice epsilon Z^d. Although our final interest is in
the (sub)stochastic jump process, technically this is a pure analysis paper,
inspired by PDE techniques.
