Inflation from Quantum Geometry
Abstract
Quantum geometry predicts that a universe evolves through an inflationary phase at small volume before exiting gracefully into a standard Friedmann phase. This does not require the introduction of additional matter fields with ad hoc potentials; rather, it occurs because of a quantum gravity modification of the kinetic part of ordinary matter Hamiltonians. An application of the same mechanism can explain why the present day cosmological acceleration is so tiny.
- Publication:
-
Physical Review Letters
- Pub Date:
- December 2002
- DOI:
- 10.1103/PhysRevLett.89.261301
- arXiv:
- arXiv:gr-qc/0206054
- Bibcode:
- 2002PhRvL..89z1301B
- Keywords:
-
- 04.60.Kz;
- 98.80.Hw;
- Lower dimensional models;
- minisuperspace models;
- General Relativity and Quantum Cosmology;
- Astrophysics;
- High Energy Physics - Theory
- E-Print:
- 4 pages, 3 figures