On the Effective Equation of State of Dark Energy release_pjzyfhxsb5hiziz44y75thv2tq

by Martin S. Sloth

Released as a report .

2010  

Abstract

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, 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 -0.96.
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Type  report
Stage   accepted
Date   2010-12-30
Version   v2
Language   en ?
Number  CERN-PH-TH/2010-111
arXiv  1005.3241v2
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