Cosmology with time-varying G
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), Vol. 25:3
- Country of Publication:
- United States
- Language:
- English
Similar Records
The Speed of Light and the Hubble parameter: The Mass-Boom Effect
Preinflationary and inflationary fast-roll eras and their signatures in the low CMB multipoles
Related Subjects
GENERAL PHYSICS
COSMOLOGY
GRAVITATIONAL FIELDS
BLACK HOLES
BLACKBODY RADIATION
COSMIC PHOTONS
COSMIC PROTONS
COSMIC RAY PROPAGATION
COSMOLOGICAL MODELS
EINSTEIN FIELD EQUATIONS
GRAVITATIONAL RADIATION
HUBBLE EFFECT
PARTICLE DECAY
RED SHIFT
STAR EVOLUTION
TIME DEPENDENCE
UNIVERSE
BARYONS
COSMIC RADIATION
DECAY
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
EQUATIONS
FERMIONS
FIELD EQUATIONS
HADRONS
IONIZING RADIATIONS
MASSLESS PARTICLES
MATHEMATICAL MODELS
NUCLEONS
PHOTONS
PROTONS
RADIATIONS
640106* - Astrophysics & Cosmology- Cosmology