Cosmology with time-varying G

Journal Article · Sat Mar 01 04:00:00 EST 1986 · Int. J. Theor. Phys.; (United States)

DOI:https://doi.org/10.1007/BF00668710· OSTI ID:7162932

Alfonso-Faus, A

It is shown that a universe with a time-varying gravitational ''constant'' G necessarily implies creation if the rest mass of matter particles is constant. From Einstein's field equations, the conditions for energymomentum propagation are drawn, from which matter and photon propagation equations are derived. It is found that at an age t=10/sup -40/t/sub 0/ of the order light takes to travel a proton size, Planck's units become of the order of the proton's mass, size and time. Hence, matter particles at this age are quantum black holes. Evaporation of these quantum black holes at this age gives a background blackbody radiation that, red shifted to present time, gives the present cosmic microwave background. A cosmological model of the Friedmann type is constructed. The red shift versus distance relation is derived taking creation into account. The three results for the age of the universe, i.e. radioactive decay, Hubble's constant, and stellar evolution are brought together in this creation model. The matter-dominated era occurs for t greater than 7.6 x 10/sup -3/t/sub 0/ while the radiation-dominated era occurs for 7.6 x 10/sup -3/t/sub 0/ greater than t greater than 10/sup -40/t/sub 0/. The origin of the universe is placed at this last limit, which is Planck's time at the corresponding G, consisting of quantum black holes at a temperature approximately equal to 3 x 10/sup 11/K.

• Research Organization: E.U.I.T. Aeronautica Plaza Cardenal Cisneros 3, Madrid
• OSTI ID: 7162932
• Journal Information: Int. J. Theor. Phys.; (United States), Journal Name: Int. J. Theor. Phys.; (United States) Vol. 25:3; ISSN IJTPB
• Country of Publication: United States
• Language: English

Related Subjects

640106* -- Astrophysics & Cosmology-- Cosmology
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BARYONS
BLACK HOLES
BLACKBODY RADIATION
COSMIC PHOTONS
COSMIC PROTONS
COSMIC RADIATION
COSMIC RAY PROPAGATION
COSMOLOGICAL MODELS
COSMOLOGY
DECAY
EINSTEIN FIELD EQUATIONS
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
EQUATIONS
FERMIONS
FIELD EQUATIONS
GRAVITATIONAL FIELDS
GRAVITATIONAL RADIATION
HADRONS
HUBBLE EFFECT
IONIZING RADIATIONS
MASSLESS PARTICLES
MATHEMATICAL MODELS
NUCLEONS
PARTICLE DECAY
PHOTONS
PROTONS
RADIATIONS
RED SHIFT
STAR EVOLUTION
TIME DEPENDENCE
UNIVERSE