Evolution without evolution: Dynamics described by stationary observables

Details Evolution without evolution: Dynamics described by stationary observables Evolution without evolution: Dynamics described by stationary observables

Jun 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983phrvd..27.2885p&link_type=abstract

Physical Review D (Particles and Fields), Volume 27, Issue 12, 15 June 1983, pp.2885-2892

Physics

95

Scientific paper

Because the time parameter in the Schrödinger equation is not observable, energy apparently obeys a superselection rule in the same sense that charge does. That is, observables must all commute with the Hamiltonian and hence be stationary. This means that it is consistent with all observations to assume that any closed system such as the Universe is in a stationary state. We show how the observed dynamic evolution of a system can be described entirely in terms of stationary observables as a dependence upon internal clock readings.

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