Quantum decay of a de Sitter universe and inflation without fine-tuning in 1+1 dimensions

Details Quantum decay of a de Sitter universe and inflation without fine-tuning in 1+1 dimensions Quantum decay of a de Sitter universe and inflation without fine-tuning in 1+1 dimensions

Jun 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993phrvd..47.5389y&link_type=abstract

Physical Review D (Particles, Fields, Gravitation, and Cosmology), Volume 47, Issue 12, 15 June 1993, pp.5389-5393

Mathematics

Logic

9

Gravity In More Than Four Dimensions, Kaluza-Klein Theory, Unified Field Theories, Alternative Theories Of Gravity, Particle-Theory And Field-Theory Models Of The Early Universe

Scientific paper

The problem of back reaction is investigated in a model of evolving de Sitter spacetime. It is shown in the leading semiclassical approximation to a dilaton gravity theory that a quantum correction gives rise to a decay of a de Sitter spacetime without encountering a curvature singularity. As an application this model may serve as a prototype of the inflationary scenario followed by a hot big bang free from the fine-tuning problem of a cosmological constant.

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