The cosmological constant from the QCD Veneziano ghost

• DOI: 10.1016/j.physletb.2010.03.080
• Publication Date: 2010-04-02T04:33:58Z
• Authors: Federico R. Urban; Ariel R. Zhitnitsky
• Keywords: Cosmological constant; Vacuum expectation value

We suggest that the solution to cosmological vacuum energy puzzle is linked infrared sector of effective theory gravity interacting with standard model fields, QCD fields specifically. work in framework low quantum as an field theory. In particular, we compute terms parameters and Hubble constant $H$ such $\epsilon_{vac} \sim H \cdot m_q\la\bar{q}q\ra /m_{\eta'} (3.6\cdot 10^{-3} \text{eV})^4$, which amazingly close observed value today. The ghost (responsible for $U(1)_A$ problem) plays a crucial r\^ole computation energy, because ghost's properties at very large but finite distances slightly deviate (as $\sim / \Lqcd $) from their infinite volume Minkowski values. Another important prediction this states owes its existence asymmetry cosmos. Indeed, effect direct consequence embedding our Universe on non-trivial manifold torus (slightly) different linear sizes. Such violation isotropy apparently indeed supported by WMAP, will be confirmed (or ruled out) future PLANCK data.