# Feynman path integrals on compact Lie groups with bi-invariant Riemannian metrics and Schrödinger equations

July 06, 2023

In this work we consider a suitable generalization of the Feynman path
integral on a specific class of Riemannian manifolds consisting of compact Lie
groups with bi-invariant Riemannian metrics. The main tools we use are the
Cartan development map, the notion of oscillatory integral, and the Chernoff
approximation theorem. We prove that, for a class of functions of a dense
subspace of the relevant Hilbert space, the Feynman map produces the solution
of the Schr\"odinger equation, where the Laplace-Beltrami operator coincides
with the second order Casimir operator of the group.

Keywords:

Feynman integral, Lie groups