Ricci Dark Energy in braneworld models with a Gauss-Bonnet term in the
  bulk
  We investigate the Ricci Dark Energy (RDE) in the braneworld models with a
Gauss-Bonnet term in the Bulk. We solve the generalized Friedmann equation on
the brane analytically and find that the universe will finally enter into a
pure de Sitter spacetime in stead of the big rip that appears in the usual 4D
Ricci dark energy model with parameter $\alpha<1/2$. We also consider the
Hubble horizon as the IR cutoff in holographic dark energy model and find it
can not accelerate the universe as in the usual case without interacting.
