QUANTUM ZENO EFFECT WITH THE FEYNMAN-MENSKY PATH-INTEGRAL APPROACH
Roberto Onofrio, Carlo Presilla, Ubaldo Tambini
A model for quantum Zeno effect based upon an effective Schrödinger equation originated by the path-integral approach is developed and applied to a two-level system simultaneously stimulated by a resonant perturbation. It is shown that inhibition of stimulated transitions between the two levels appears as a consequence of the influence of the meter whenever measurements of energy, either continuous or pulsed, are performed at quantum level of sensitivity. The generality of this approach allows to qualitatively understand the inhibition of spontaneous transitions as the decay of unstable particles, originally presented as a paradox of quantum measurement theory. 03.65.Bz, 42.50.Wm, 13.20.-v Typeset using REVTEX 1 Quantum measurement theory has been developed in the thirties to understand the problems which arise when quantum mechanical formalism is interpreted and confronted with its macroscopic limit. Some of the debates originated by the matching between quantum and
•Jan 1, 1993•18 citations