@article{LudewigRosenberger2020, author = {Ludewig, Matthias and Rosenberger, Elke}, title = {Asymptotic eigenfunctions for Schr{\"o}dinger operators on a vector bundle}, series = {Reviews in mathematical physics}, volume = {32}, journal = {Reviews in mathematical physics}, number = {7}, publisher = {World Scientific}, address = {Singapore}, issn = {0129-055X}, doi = {10.1142/S0129055X20500208}, pages = {28}, year = {2020}, abstract = {In the limit (h) over bar -> 0, we analyze a class of Schr{\"o}dinger operators H-(h) over bar = (h) over bar L-2 + (h) over barW + V .id(epsilon) acting on sections of a vector bundle epsilon over a Riemannian manifold M where L is a Laplace type operator, W is an endomorphism field and the potential energy V has a non-degenerate minimum at some point p is an element of M. We construct quasimodes of WKB-type near p for eigenfunctions associated with the low-lying eigenvalues of H-(h) over bar. These are obtained from eigenfunctions of the associated harmonic oscillator H-p,H-(h) over bar at p, acting on smooth functions on the tangent space.}, language = {en} }