Quantum back reaction in integrable cosmology

Details Quantum back reaction in integrable cosmology Quantum back reaction in integrable cosmology

Jul 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993phrvd..48..707h&link_type=abstract

Physical Review D (Particles, Fields, Gravitation, and Cosmology), Volume 48, Issue 2, 15 July 1993, pp.707-712

Mathematics

Logic

7

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

Two-dimensional dilaton gravity theories with a conserved current admit analytic integration of quantum back reaction in the semiclassical limit, yielding only a few classes of homogeneous cosmological solutions. One class of solutions describe a toy model of an inflationary universe which decays into a flat universe due to quantum back reaction, despite the apparent presence of a cosmological constant, thus providing a possible resolution of the cosmological constant problem. In another class of solutions the semiclassical approximation breaks down either initially or finally in the cosmological evolution.

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