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< 81Pxx | 81-XX | 81Rxx >
81-XX Quantum theory
81Qxx General mathematical topics and methods in quantum theory
81Q05   Closed and approximate solutions to the Schrödinger, Dirac, Klein-Gordon and other quantum-mechanical equations
81Q10   Selfadjoint operator theory in quantum theory, including spectral analysis
81Q15   Perturbation theories for operators and differential equations
81Q20   Semiclassical techniques including WKB and Maslov methods
81Q30   Feynman integrals and graphs; applications of algebraic topology and algebraic geometry [See also 14D05, 32S40]
81Q40   Bethe-Salpeter and other integral equations
81Q50   Quantum chaos [See also 37Dxx]
81Q60   Supersymmetric quantum mechanics
81Q70   Differential-geometric methods, including holonomy, Berry and Hannay phases, etc.
81Q99   None of the above, but in this section
< 81Pxx | 81-XX | 81Rxx >
American Mathematical Society