Other
Scientific paper
Mar 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980phrvl..44..703z&link_type=abstract
Physical Review Letters, vol. 44, Mar. 17, 1980, p. 703-706.
Other
48
Big Bang Cosmology, Gravitation Theory, Horizon, Dirac Equation, Einstein Equations, Isotropy, Particle Interactions
Scientific paper
Consideration is given to the horizon problem in the period shortly after the big bang in the standard homogeneous, isotropic cosmology, in which the size of causally connected domains is much smaller than the effective size of the universe. It is shown that within the framework of the broken-symmetric theory of gravitation, in which the spontaneous breaking of a unified gage interaction into strong, electromagnetic, and weak interactions allows the gravitational constant to vary with temperature and hence with time, gravitation could have been weaker at earlier times. This weakening would then have slowed the early expansion of the universe so that the scale factor in the Robertson-Walker metric would increase with the first power of time, thus allowing every particle in the universe to be in causal contact with every other one for one instant. The implications of a dimensionless theory of the world, including gravitation, are also considered.
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