Cosmic coincidence or graviton mass?
Abstract
Using the quantum corrected Friedmann equation, obtained from the quantum Raychaudhuri equation, and assuming a small mass of the graviton (but consistent with observations and theory), we propose a resolution of the smallness problem (why is observed vacuum energy so small?) and the coincidence problem (why does it constitute most of the universe, about 70%, in the current epoch?).
- Publication:
-
International Journal of Modern Physics D
- Pub Date:
- November 2014
- DOI:
- arXiv:
- arXiv:1405.4011
- Bibcode:
- 2014IJMPD..2342017D
- Keywords:
-
- Graviton mass;
- dark energy;
- coincidence problem;
- Raychaudhuri equation;
- Bohmian trajectories;
- General Relativity and Quantum Cosmology;
- Astrophysics - Cosmology and Nongalactic Astrophysics;
- High Energy Physics - Theory
- E-Print:
- This essay received an Honorable Mention in the 2014 Gravity Research Foundation Essay Competition. 2 pages, revtex4. arXiv admin note: text overlap with arXiv:1404.3093