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Oxford University Press Path Integrals in Quantum Mechanics (Oxford Graduate Texts)

Name: Path Integrals in Quantum Mechanics (Oxford Graduate Texts)
Brand: Oxford University Press
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The main goal of this work is to familiarize the reader with a tool, the path integral, that offers an alternative point of view on quantum mechanics, but more important, under a generalized form, has become the key to a deeper understanding of quantum field theory and its applications, which extend from particle physics to phase transitions or properties of quantum gases. Path integrals are mathematical objects that can be considered as generalizations to an infinite number of variables, represented by paths, of usual integrals. They share the algebraic properties of usual integrals, but have new properties from the viewpoint of analysis. Path integrals are powerful tools for the study of quantum mechanics, because they emphasize very explicitly the correspondence between classical and quantum mechanics. Physical quantities are expressed as averages over all possible paths but, in the semi-classical limit, the leading contributions come from paths close to classical paths. Thus, path integrals lead to an intuitive understanding and simple calculations of physical quantities in the semi-classical limit. We will illustrate this observation with scattering processes, spectral properties or barrier penetration. The formulation of quantum mechanics based on path integrals, if it seems mathematically more complicated than the usual formulation based on partial differential equations, is well adapted to systems with many degrees of freedom, where a formalism of Schrödinger type is much less useful. It allows a simple construction of a many-body theory both for bosons and fermions.

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Path Integrals in Quantum Mechanics (Oxford Graduate Texts)

Product type: ABIS BOOK

Brand: OXFORD UNIVERSITY PRESS

Product Specifications

Brand: Oxford University Press
Format: paperback
ASIN: 0198566751
Category: Books > Subjects > Science, Nature & Maths > Physics > Mathematical
Domain: Amazon UK
Release Date: 03 September 2010
Listed Since: 21 January 2010

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Oxford University Press Path Integrals in Quantum Mechanics (Oxford Graduate Texts)

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