Testing the Cosmic Coincidence Problem and the Nature of Dark Energy

Journal Article · Mon Oct 01 00:00:00 EDT 2001 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.87.141302· OSTI ID:40277670

Dalal, Neal; Abazajian, Kevork; Jenkins, Elizabeth; Manohar, Aneesh V

Dark energy models which alter the relative scaling behavior of dark energy and matter could provide a natural solution to the cosmic coincidence problem -- why the densities of dark energy and dark matter are comparable today. A generalized class of dark energy models is introduced which allows noncanonical scaling of the ratio of dark matter and dark energy with the Robertson-Walker scale factor a(t) . We show that determining whether there is a coincidence problem, and the extent of cosmic coincidence, can be addressed by several forthcoming experiments.

• Sponsoring Organization: (US)
• DOE Contract Number: FG03-97ER40546
• OSTI ID: 40277670
• Journal Information: Physical Review Letters, Vol. 87, Issue 14; Other Information: DOI: 10.1103/PhysRevLett.87.141302; Othernumber: PRLTAO000087000014141302000001; 030140PRL; PBD: 1 Oct 2001; ISSN 0031-9007
• Publisher: The American Physical Society
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ENERGY MODELS
NONLUMINOUS MATTER
TESTING