Cosmogony and the magnitude of the dimensionless gravitational coupling constant

Details Cosmogony and the magnitude of the dimensionless gravitational coupling constant Cosmogony and the magnitude of the dimensionless gravitational coupling constant

Feb 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977natur.265..710s&link_type=abstract

Nature, vol. 265, Feb. 24, 1977, p. 710, 711.

Astronomy and Astrophysics

Astrophysics

7

Astrophysics, Cosmology, Gravitational Collapse, Gravitational Constant, Universe, Dimensionless Numbers, Galaxies, Kelvin-Helmholtz Instability, Stellar Evolution

Scientific paper

A convenient measure of the magnitude of the force of gravity is provided by the dimensionless constant which represents the ratio of gravitational to electromagnetic forces between a pair of protons multiplied by the atomic line structure constant. Certain elementary and speculative considerations show that for the universe to contain galaxies and nuclear-burning stars, this constant must lie within a few orders of magnitude of its actual value. It is also shown how the magnitude of one of the most fundamental of cosmological constants, namely the entropy per baryon, can be related to the scale of the large-scale structure of the universe and the value of the dimensionless gravitational constant.

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