Now showing items 1-5 of 5
Doomsdays in a modiﬁed theory of gravity: a classical and a quantum approach
By far cosmology is one of the most exciting subject to study, even more so with the current bulk of observations we have at hand. These observations might indicate different kinds of doomsdays, if dark energy follows ...
Phantom dark ghost in Einstein–Cartan gravity
A class of dynamical dark energy models is constructed through an extended version of fermion fields corresponding to phantom dark ghost spinors, which are spin 1/2 with mass dimension 1. We find that if these spinors ...
Quantum cosmology of the Big Rip: Within GR and in a modified theory of gravity
Quantum gravity is the theory that is expected to successfully describe systems that are under strong gravitational effects while at the same time being of an extreme quantum nature. When this principle is applied to the ...
Cosmological Perturbations in Phantom Dark Energy Models
The CDM paradigm, characterised by a constant equation of state w = -1 for dark energy, is the model that better fits observations. However, the same observations strongly support the possibility of a dark energy content ...
The Mimetic Born-Infeld Gravity: The Primordial Cosmos and Spherically Symmetric Solutions
The Eddington-inspired-Born-Infeld (EiBI) model is reformulated within the mimetic approach. In the presence of a mimetic field, the model contains non-trivial vacuum solutions. We study a realistic primordial vacuum ...