Cosmology from a new non-conservative gravity
  In this paper we present a cosmological model arising from a non-conservative
gravitational theory proposed in [PRD 95, 101501(R) (2017)]. The novel feature
where comparing with previous implementations of dissipative effects in gravity
is the possible arising of such phenomena from a least action principle, so
they are of a purely geometric nature. We derive the dynamical equations
describing the behaviour of the cosmic background, considering a single fluid
model composed by pressureles matter, whereas the dark energy is conceived as
an outcome of the "geometric" dissipative process emerging in the model.
Besides, adopting the synchronous gauge we obtain the first-order perturbative
equations which shall describe the evolution of the matter perturbations within
the linear regime.
