Astronomy and Astrophysics – Astrophysics – Cosmology and Extragalactic Astrophysics
Scientific paper
2009-06-18
JCAP 0909:018,2009
Astronomy and Astrophysics
Astrophysics
Cosmology and Extragalactic Astrophysics
uses revtex4 - v2 as published
Scientific paper
10.1088/1475-7516/2009/09/018
We suggest that the solution to the cosmological vacuum energy puzzle does not require any new field beyond the standard model, but rather can be explained as a result of the interaction of the infrared sector of the effective theory of gravity with standard model fields. The cosmological constant in this framework can be presented in terms of QCD parameters and the Hubble constant $H$ as follows, $\epsilon_{vac} \sim H \cdot m_q\la\bar{q}q\ra /m_{\eta'} \sim (4.3\cdot 10^{-3} \text{eV})^4$, which is amazingly close to the observed value today. In this work we explain how this proposal can be tested by analyzing CMB data. In particular, knowing the value of the observed cosmological constant fixes univocally the smallest size of the spatially flat, constant time 3d hypersurface which, for instance in the case of an effective 1-torus, is predicted to be around 74 Gpc. We also comment on another important prediction of this framework which is a violation of cosmological isotropy. Such anisotropy is indeed apparently observed by WMAP, and will be confirmed (or ruled out) by future PLANCK data.
Urban Federico R.
Zhitnitsky Ariel R.
No associations
LandOfFree
Cosmological constant, violation of cosmological isotropy and CMB does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Cosmological constant, violation of cosmological isotropy and CMB, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cosmological constant, violation of cosmological isotropy and CMB will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-400676