Matrix formulation for the Wentzel-Kramers-Brillouin quantization rule

Abstract
We study a matrix formulation for the WKB quantization rule (mWKB) where the real momenta of the type p={2m[E-V(q)]}1/2 are replaced by elements of Clifford algebras. The WKB and mWKB spectra for two kinds of potentials are compared and some mathematical, physical, and pedagogical issues concerning the mWKB approach are stressed.