244 citations
- Durban University of TechnologyZA55 papers
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61 papers · 1 filter
Anisotropic Spacetimes in -gravity: Bianchi I, Bianchi III and Kantowski-Sachs Cosmologies
R. Bogadi, A. Giacomini, M. Govender +3
We investigate the evolution of cosmological anisotropies within the framework of -gravity. Specifically, we consider a locally rotationally symmetric geometry in…
-cosmological dynamics in the FLRW background
Nikolaos Dimakis, Alex Giacomini, Genly Leon +3
We examine the cosmological dynamics of Einstein-Gauss-Bonnet gravity models in a four-dimensional spatially flat FLRW metric. These models are described by $f\left( R,\mathcal{G}\…
Relativistic stars in -gravity: Exact analytic solution for the power-law case
Nikolaos Dimakis, Alex Giacomini, Andronikos Paliathanasis +1
We investigate static spherically symmetric spacetimes within the framework of symmetric teleparallel gravity in order to describe relativistic stars. We adopt a specific an…
Spontaneous symmetry breaking as a result of extra dimensions compactification
Dmitry Chirkov, Alex Giacomini, Alexey Toporensky +1
We consider dynamics of a scalar field in compactification scenario of Einstein-Gauss-Bonnet cosmology. It is shown that if the field is non-minimally coupled to curvature, its asy…
Revisiting the static spherically symmetric solutions of gravity with a conformally coupled scalar field
Sourya Ray
We revisit the static spherically symmetric solutions of Einstein's General Relativity with a conformally coupled scalar field in arbitrary dimensions. Using a four rank tensor int…
Torsion at different scales: from materials to the Universe
Nick E. Mavromatos, Pablo Pais, Alfredo Iorio
The concept of torsion in geometry, although known for a long time, has not gained considerable attention by the physics community until relatively recently, due to its diverse and…