Path Integrals in Quantum Mechanics, Statistics, Polymer Physics, and Financial Markets, 4 edition
Path Integrals in Quantum Mechanics, Statistics, Polymer Physics, and Financial Markets, 4 edition by Hagen Kleinert
English | July 19, 2006 | ISBN: 9812700080 | Pages: 1592 | DJVU | 12,6 MB
English | July 19, 2006 | ISBN: 9812700080 | Pages: 1592 | DJVU | 12,6 MB
This is the fourth, expanded edition of the comprehensive textbook published in 1990 on the theory and applications of path integrals. It is the first book to explicitly solve path integrals of a wide variety of nontrivial quantum-mechanical systems, in particular the hydrogen atom.
The solutions have become possible by two major advances. The first is a new euclidean path integral formula which increases the restricted range of applicability of Feynman's famous formula to include singular attractive 1/r and 1/r2 potentials. The second is a simple quantum equivalence principle governing the transformation of euclidean path integrals to spaces with curvature and torsion, which leads to time-sliced path integrals that are manifestly invariant under coordinate transformations. In addition to the time-sliced definition, the author gives a perturbative definition of path integrals which makes them invariant under coordinate transformations.