Cosmology from quantum potential
Abstract
It was shown recently that replacing classical geodesics with quantal (Bohmian) trajectories gives rise to a quantum corrected Raychaudhuri equation (QRE). In this article we derive the second order Friedmann equations from the QRE, and show that this also contains a couple of quantum correction terms, the first of which can be interpreted as cosmological constant (and gives a correct estimate of its observed value), while the second as a radiation term in the early universe, which gets rid of the big-bang singularity and predicts an infinite age of our universe.
- Publication:
-
Physics Letters B
- Pub Date:
- February 2015
- DOI:
- arXiv:
- arXiv:1404.3093
- Bibcode:
- 2015PhLB..741..276F
- Keywords:
-
- General Relativity and Quantum Cosmology;
- Astrophysics - Cosmology and Nongalactic Astrophysics;
- High Energy Physics - Theory
- E-Print:
- 4 pages, revtex4, 1 figure,references added, to appear in Phys. Lett. B