The self-measurement of the universe and the concept of time in quantum cosmology

Details The self-measurement of the universe and the concept of time in quantum cosmology The self-measurement of the universe and the concept of time in quantum cosmology

Dec 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990cqgra...7.2317m&link_type=abstract

Classical and Quantum Gravity (ISSN 0264-9381), vol. 7, Dec. 1990, p. 2317-2329.

Physics

9

Cosmology, Quantum Theory, Time, Measurement, Time Dependence

Scientific paper

The dynamics of the quantum universe under self-measurement is investigated in the framework of the path-integral approach to quantum theory of continuous measurements. The corresponding amplitude (propagator) is evaluated explicitly for a simple superspace model. It is shown that the picture of time evolution of the quantum universe naturally emerges as a result of its self-measurement. The Wheeler-DeWitt dynamics holds for small times when the effect of measurement can be neglected and time dependence disappears.

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