In this paper, we consider three phantom dark energy models, in the context of interaction
between the dark components namely cold dark matter (CDM) and dark energy (DE). The …

In this paper, we present a new cosmological event, which we named the little sibling of the
big rip. This event is much smoother than the big rip singularity. When the little sibling of the …

We address three genuine phantom dark energy models where each of them induces the
particular future events known as Big Rip, Little Rip and Little Sibling of the Big Rip. The …

The big rip, the little rip and the little sibling of the big rip are cosmological doomsdays
predicted by some phantom dark-energy models that could describe the future evolution of …

We consider novel wormhole solutions supported by a matter content that minimally violates
the null energy condition. More specifically, we consider an equation of state in which the …

Abstract The Eddington-inspired-Born–Infeld scenario (EiBI) can prevent the big bang
singularity for a matter content whose equation of state is constant and positive. In a recent …

In this paper, a modified Eddington-inspired-Born-Infeld (EiBI) theory with a pure trace term
g_ μ ν R g μ ν R being added to the determinantal action is analysed from a cosmological …

We carry out an analysis of the cosmological perturbations in general relativity for three
different models which are good candidates to describe the current acceleration of the …

Cosmological observations allow the possibility that dark energy is caused by phantom
fields. These fields typically lead to the occurrence of singularities in the late Universe. We …

We analyze from a classical and quantum point of view the behavior of the Universe close to
a little rip, which can be interpreted as a big rip sent towards the infinite future. Like a big rip …