John R. Klauder
Published 2003-08-08Version 1
As is well known, classical systems approximate quantum ones -- but how well? We introduce a definition of a "distance" on classical and quantum phase spaces that offers a measure of their separation. Such a distance scale provides a means to measure the quality of approximate solutions to various problems. A few simple applications are discussed.
Comments: LaTeX, 10 pages, no figures
Quantum systems coupled to a structured reservoir with multiple excitations
Density-Functional theory, finite-temperature classical maps, and their implications for foundational studies of quantum systems
The Adiabatic Theorem for Quantum Systems with Spectral Degeneracy
