Some cosmological models based on the gravitational theory\(f (R)= R+\zeta R^ 2\), and on
fluids obeying to the equations of state of Redlich–Kwong, Berthelot, and Dieterici are
proposed for describing smooth transitions between different cosmic epochs. A dynamical
system analysis reveals that these models contain fixed points which correspond to an
inflationary, a radiation dominated and a late-time accelerating epoch, and a nonsingular
bouncing solution, the latter being an asymptotic fixed point of the compactified phase …

Some cosmological models based on the gravitational theory f (R)= R+ ζ R 2, and on fluids
obeying to the equations of state of Redlich–Kwong, Berthelot, and Dieterici are proposed
for describing smooth transitions between different cosmic epochs. A dynamical system
analysis reveals that these models contain fixed points which correspond to an inflationary,
a radiation dominated and a late-time accelerating epoch, and a nonsingular bouncing
solution, the latter being an asymptotic fixed point of the compactified phase space. The …