classical context

In quantum mechanics, given an algebra of quantum observables, a *classical context* is a commutative subalgebra.

The quantum observables in such a commutative subalgebra may all be measured simultaneously without the uncertainty principle of quantum mechanics interfering, hence they may be measured as observables in classical mechanics.

Revised on January 7, 2014 12:21:25
by Urs Schreiber
(89.204.154.156)