A New Strong Interaction Sector as the origin for the Dark Energy and Dark Matter

Abstract

A new strong interaction sector is proposed as a possible origin for the Dark Energy and Dark matter. It is described by an unbroken gauge group $SU(2)_Z$ which grows strong at a scale $\Lambda_Z \sim 10^{-3} eV$ provided its coupling is of the order of the electroweak coupling at some high energy scale (either $\sim 10^{16} GeV$ or $\sim O(TeV)$ . The present vacuum energy which is consistent with a cosmological constant is related to $\Lambda_Z$ and one of the $SU(2)_Z$ ``matter fields'' provides a candidate for the Dark Matter in the form of a weakly interacting massive particle (WIMP) with an annihilation cross section naturally of the order of the electroweak one at the time of its decoupling.