Many-Body Problems and Quantum Field Theory

Many-Body Problems and Quantum Field Theory

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Emphasis is placed on analogies between the various systems rather than on advanced or specialized aspects, with the purpose of illustrating common ideas within different domains of physics. Starting from a basic knowledge of quantum mechanics and classical electromagnetism, the exposition is self-contained and explicitly details all steps of the derivations. The new edition features a substantially new treatment of nucleon pairing.Indeed, diagram (g) introduces the product of two propagators of fermions Go( a1a2)Go(v2|a. 1). If Go(v1a:2) is the propagator (9.99) of a non-relativistic electron in the vacuum of matter, it is clear that this product vanishes, since Go (a 1|a:2) = 0, ti alt; t 2. If, on the other ... A diagram without external lines, such as Fig. 9.12hanbsp;...

Title:Many-Body Problems and Quantum Field Theory
Author:Philippe-André Martin, Francois Rothen
Publisher:Springer Science & Business Media - 2013-04-17


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