95 citations · 922 across the 51 of their papers we have counts for
4 papers · 1 filter
Anisotropic Cosmology with Inhomogeneous and Nonlinear -Models
N. Dimakis, A. Giacomini, G. Leon +2
We investigate the cosmological dynamics of the nonlinear -model in a locally rotational symmetric Bianchi V background geometry. We employ the and the $SL(2,\mathbb{R})…
Nontrivial Symmetries in -essence Cosmology
Andrés Lueiza-Colipí, Nikolaos Dimakis, Andronikos Paliathanasis
In the context of a spatially flat FLRW background, we perform a symmetry classification of -essence models with Lagrangian densities of the form . The kinetic…
Inhomogeneous Cosmologies with Bumpy Structure from Superfluid Pionic Vortices and the propagation of electromagnetic field
Fabrizio Canfora, Alex Giacomini, Nikolaos Dimakis +1
In this work we introduce exact cosmological solutions in General Relativity in (3+1) dimensions which take into account both the usual fluid component as well as a superfluid comp…
Dirac-Bergmann algorithm and canonical quantization of -essence cosmology
Andrés Lueiza-Colipí, Andronikos Paliathanasis, Nikolaos Dimakis
We develop a general canonical quantization scheme for -essence cosmology in scalar-tensor theory. Utilizing the Dirac-Bergmann algorithm, we construct the Hamiltonian associate…