Uncertainty principle and the horizon size of our universe.

Details Uncertainty principle and the horizon size of our universe. Uncertainty principle and the horizon size of our universe.

Aug 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987gregr..19..791p&link_type=abstract

General Relativity and Gravitation, Volume 19, Issue 8, pp.791-796

Physics

2

Cosmology:Quantum Gravity, Hubble Expansion:Quantum Effects, Quantum Gravity:Cosmology

Scientific paper

Quantum uncertainties prevent simultaneous measurement of the expansion factor S(t) and its time derivativedot Sleft( t right). Consequently the “Hubble size”( {{{dot S} {/ {{dot S} S}} S}} )^{ - 1} has an inherent uncertainty in the quantum state that describes the semiclassical evolution of the universe. We show that the quantum uncertainty in the Hubble size of the universe is amplified to unacceptably large values in any inflationary process.

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