# Planck's constant variation as a cosmological evolution test for the early universe

*A.K. Avetissian*^{1}

(1) Department of Astrophysics, Yerevan State University, A. Manukian St. 1, 0025 Yerevan, Armenia

### Abstract

A conjecture on a hierarchical cosmological time evolution of Planck's constant has been accepted. This presumed phenomenon might be responsible for the cosmological high redshifts as an alternative mechanism instead of the Doppler effect. The Bohr radius of a hydrogen atom and the probability of alpha decay of atomic nuclei have been estimated: both results are in sufficient consent with observational data concerning the light elements abundance in the early Universe.

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