Quantum and inflationary cosmology with higher derivative gravity

Thesis/Dissertation · Thu Jan 01 04:00:00 EST 1987

OSTI ID:5644245

Mijic, M B

The subject of this thesis is the description of the Very Early Universe, from the Big Bang to the beginning of the radiation dominated Friedmann- Robertson-Walker era. The author examine a pure gravity inflationary model for the Universe which is based on adding an epsilonR/sup 2/ term to the usual gravitational lagrangian (improved Starobin-sky model). We find the classical inflationary solution essentially independent of initial conditions. The model has only one free parameter which is bounded from above by observational constraints on scalar and tensorial perturbations and from below by both the need for standard baryogenesis and the need for galaxy formation. This requires 10/sup 11/ GeV < epsilon/sup -1/2/ < 10/sup 13/ GeV. The model is interpreted as a Chaotic Inflationary model, with initial conditions for classical evolution being generated by the quantum fluctuations in metric and curvature in Very Early Universe. We discuss those fluctuations using particular solution of Wheeler-De Witt equation and find that the inflationary phase is highly typical event.

• Research Organization: California Inst. of Tech., Pasadena (USA)
• OSTI ID: 5644245
• Country of Publication: United States
• Language: English

Related Subjects

657003* -- Theoretical &amp; Mathematical Physics-- Relativity &amp; Gravitation
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COSMOLOGICAL MODELS
FLUCTUATIONS
FUNCTIONS
GALACTIC EVOLUTION
GRAVITATION
INFLATION
LAGRANGIAN FUNCTION
MATHEMATICAL MODELS
MECHANICS
NUCLEOSYNTHESIS
QUANTUM MECHANICS
SYNTHESIS
UNIVERSE
VARIATIONS