ON THE EFFECTIVE EQUATION OF STATE OF DARK ENERGY
- SLOTH, MARTIN S. CERN, Physics Department, Theory Unit, CH-1211 Geneva 23, Switzerland
- 2012-1-25
Published in:
- International Journal of Modern Physics D. - World Scientific Pub Co Pte Lt. - 2010, vol. 19, no. 14, p. 2259-2264
English
In an effective field theory model with an ultraviolet momentum cutoff, there is a relation between the effective equation-of-state of dark energy and the ultraviolet cutoff scale. It implies that a measure of the equation of state of dark energy different from minus one, ω ≠ -1, does not rule out vacuum energy as dark energy. It also indicates an interesting possibility that precise measurements of the infrared properties of dark energy can be used to probe the ultraviolet cutoff scale of effective quantum field theory coupled to gravity. In a toy model with a vacuum energy-dominated universe with a Planck scale cutoff, the dark energy effective equation of state is w eff ≈ -0.96.
- Language
-
- English
- Open access status
- green
- Identifiers
-
- DOI 10.1142/s0218271810018402
- ISSN 0218-2718
- Persistent URL
- https://sonar.ch/global/documents/260259
Statistics
Document views: 14
File downloads:
- Full-text: 0