Is noncommutativity related with the smallness of $\Lambda$?
  In this letter we study the effects of a noncommutative minisuperspace, including matter degrees of freedom on a FRW universe with cosmological constant. In this setting the vacuum energy density can be calculated to be of the same order as the observed energy density of the universe. 
E. Mena, O. Obreg\'on and M. Sabido