2011/08/31 by Wei He · 1 citation
Physics and Astronomy · Mathematics · #math-ph #hep-th #math.MP
paper · pdf · doi:10.1063/1.4926954
published as J. Math. Phys. 56, 072302 (2015) · Content simplified, matches the journal version
arxiv created 2015/07/27 · arxiv updated 2015/07/29
Based on some recent progress on a relation between four dimensional super Yang-Mills gauge theory and quantum integrable system, we study the asymptotic spectrum of the quantum mechanical problems described by the Mathieu equation and the Lamé equation. The large momentum asymptotic expansion of the eigenvalue is related to the instanton partition function of supersymmetric gauge theories which can be evaluated by a combinatorial method. The electro-magnetic duality of gauge theory indicates that in the parameter space there are three asymptotic expansions for the eigenvalue, we confirm this fact by performing the WKB analysis in each asymptotic expansion region. The results presented here give some new perspective on the Floquet theory about periodic differential equation.