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Zeta-regularisation for exact-WKB resolution of a general 1D Schr\"odinger equation

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arxiv 1202.3100 v2 pith:VLY5WAHQ submitted 2012-02-14 math-ph math.MPquant-ph

André Voros This is my paper
classification math-phmath.MPquant-ph
keywords exactgeneralspectralconditionsodingerquantisationresolutionschr
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We review an exact analytical resolution method for general one-dimensional (1D) quantal anharmonic oscillators: stationary Schr\"odinger equations with polynomial potentials. It is an exact form of WKB treatment involving spectral (usual) vs "classical" (newer) zeta-regularisations in parallel. The central results are a set of Bohr--Sommerfeld-like but exact quantisation conditions, directly drawn from Wronskian identities, and appearing to extend Bethe-Ansatz formulae of integrable systems. Such exact quantisation conditions do not just select the eigenvalues; some evaluate the spectral determinants, and others the wavefunctions, for the spectral parameter in general position.

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