Singuläre quadratische Formen in der Störungstheorie, Hardcover von Koshmanenko, Vo...

Singular Quadratic Forms in Perturbation Theory, Hardcover by Koshmanenko, Volodymyr, ISBN 079235625X, ISBN-13 9780792356257, Brand New, Free shipping in the US The notion of singular quadratic form appears in mathematical physics as a tool for the investigation of formal expressions corresponding to perturbations devoid of operator sense. Numerous physical models are based on the use of Hamiltonians containing perturba tion terms with singular properties. Typical examples of such expressions are Schrodin ger operators with O-potentials (-~ + AD) and Hamiltonians in quantum field theory with perturbations given in terms of operators of creation and annihilation (P(

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