Alejandro S. Jakubi (F.C.E.N-U.B
.A), Luis P. Chimento(F.C.E.N-U.B .A), Diego Pavon y Norberto Zuccala
We show that the combination of
a fluid with a bulk dissipative pressure and
quintessence matter can simultaneously
drive an accelerated expansion phase
and solve the coincidence problem
of our current Universe.
We investigate the simplest quintessence
dissipative dark matter attractor
cosmology characterized by a constant
quintessence baryotropic index. We show
that a class of accelerated coincidence--solving
attractor solutions converge
into this asymptotic behavior.
Despite of its simplicity, such
"superattractor" regime provides
a model of the recent universe that also
exhibits an excellent fit to supernovae
luminosity observations and no age
conflict. We calculate for this
regime the evolution of density and entropy
fluctuations