๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Symmetries in Discrete-Time Mechanics

โœ Scribed by M. Khorrami

Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
185 KB
Volume
252
Category
Article
ISSN
0003-4916

No coin nor oath required. For personal study only.

โœฆ Synopsis

Based on a general formulation for discrete-time quantum mechanics, introduced by M. Khorrami (Annals Phys. 224 (1995), 101), symmetries in discrete-time quantum mechanics are investigated. It is shown that any classical continuous symmetry leads to a conserved quantity in classical mechanics, as well as quantum mechanics. The transformed wave function, however, has the correct evolution if and only if the symmetry is nonanomalous.

๐Ÿ“œ SIMILAR VOLUMES

More About Discrete Symmetries in Compac
More About Discrete Symmetries in Compactified String Theories
โœ C.M.A. Scheich ๐Ÿ“‚ Article ๐Ÿ“… 1994 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 464 KB

We discuss discrete symmetries in several string compactification schemes. The same constraints on the light spectra as for Gepner models are found in various cases for non- \(R\) symmetries. Therefore it seems natural to conjecture that they always apply. The analogous constraints for \(R\) symmetr

Discrete gradient method in solid mechan
Discrete gradient method in solid mechanics
โœ Jia Lu; Jing Qian; Weimin Han ๐Ÿ“‚ Article ๐Ÿ“… 2008 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 326 KB

## Abstract A discrete method to boundary value problems in solid mechanics is presented. In this method, the unknown variable and its derivative are defined only at nodes. A discrete gradient operator is constructed with the aid of a tensorial identity on the Voronoi diagram. This operator is util

Equations Admitting Scaling and Discrete
Equations Admitting Scaling and Discrete Cyclic Symmetries
โœ M.J. Englefield ๐Ÿ“‚ Article ๐Ÿ“… 1996 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 141 KB

Some coordinate transformations on two variables are obtained that give a realization of the cyclic group. The differential invariants of scaling transformations are then combined to give quantities that are multiplied by a complex root of unity when the cyclic transformations are applied. The secon

Discrete-time survival trees
Discrete-time survival trees
โœ Imad Bou-hamad; Denis Larocque; Hatem Ben-Ameur; Louise C. Mรขsse; Frank Vitaro; ๐Ÿ“‚ Article ๐Ÿ“… 2009 ๐Ÿ› John Wiley and Sons ๐ŸŒ French โš– 150 KB