Intersecting Psi-classes on tropical M_{0,n}
arXiv:0709.3953 · doi:10.1093/imrn/rnn130
Abstract
We apply the tropical intersection theory developed by L. Allermann and J. Rau to compute intersection products of tropical Psi-classes on the moduli space of rational tropical curves. We show that in the case of zero-dimensional (stable) intersections, the resulting numbers agree with the intersection numbers of Psi-classes on the moduli space of n-marked rational curves computed in algebraic geometry.
16 pages