PSU Mark
Eberly College of Science Mathematics Department

Meeting Details

For more information about this meeting, contact Eyal Subag, Nigel Higson, Ping Xu, Mathieu Stienon.

Title:Separation of variables, superintegrability and Bôcher contractions
Seminar:GAP Seminar
Speaker:Willard Miller, University of Minnesota
Quantum superintegrable systems are exactly solvable quantum eigenvalue problems. Their solvability is due to symmetry, but the symmetry is often ``hidden''. The symmetry generators of 2nd order superintegrable systems in 2 dimensions close under commutation to define quadratic algebras, a generalization of Lie algebras. The irreducible representations of these algebras yields important information about the eigenvalues and eigenspaces of the quantum systems. Distinct superintegrable systems and their quadratic algebras are related by geometric contractions, induced by generalized Inönü-Wigner Lie algebra contractions which have important physical and geometric implications, such as the Askey scheme for obtaining all hypergeometric orthogonal polynomials as limits of Racah/Wilson polynomials. This can all be unified by ideas first introduced in the 1894 thesis of Bôcher to study R- separable solutions of the wave equation.

Room Reservation Information

Room Number:MB106
Date:01 / 26 / 2016
Time:02:30pm - 03:30pm