Electronic Resource
Springer
International journal of theoretical physics
39 (2000), S. 127-151
ISSN:
1572-9575
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract In this paper we analyze quantum mechanics formulated in terms of wave functionsdefined on what may be called the path space, rather than the traditional physicalspace. An explicit theory of quantum mechanics on a circle is given whichcan be readily applied to describe a superconducting current flowing around asuperconducting ring with a Josephson junction. The path space approach providesan elegant and natural interpretation of the current flow across the Josephsonjunction. A striking feature of the theory is the emergence of a superselectionrule inherent in the fundamental structure of the theory, without needing additionalad hoc assumptions. Other point interactions are discussed, including a δ-potentialon a circle and the standard Kronig-Penny model of a crystal lattice on thereal line.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1003655419228
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