{"product_id":"singular-quadratic-forms-in-perturbation-theory-9789401059527","title":"Singular Quadratic Forms in Perturbation Theory","description":"\u003cp\u003e • Author(s): Volodymyr Koshmanenko\u003cbr\u003e • Publisher: Springer\u003cbr\u003e • Publisher Imprint: Springer\u003cbr\u003e • BISAC: Physics - Mathematical \u0026amp; Computational\u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e\u003cp\u003eThe 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(\u003c\/p\u003e","brand":"Springer","offers":[{"title":"Paperback","offer_id":45282909913239,"sku":"9789401059527","price":7277.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/3471\/1191\/files\/9789401059527.webp?v=1769303537","url":"https:\/\/atlanticbooks.com\/products\/singular-quadratic-forms-in-perturbation-theory-9789401059527","provider":"Atlantic Books","version":"1.0","type":"link"}