Friedmann-like universes with torsion

D Kranas, CG Tsagas, JD Barrow, D Iosifidis - The European Physical …, 2019 - Springer
We consider spatially homogeneous and isotropic cosmologies with non-vanishing torsion,
which assumes a specific form due to the high symmetry of these universes. Using covariant …

Stability of the Einstein static universe in f(RT) gravity

H Shabani, AH Ziaie - The European Physical Journal C, 2017 - Springer
The Einstein static (ES) universe has played a major role in various emergent scenarios
recently proposed in order to cure the problem of the initial singularity of the standard model …

What is a singular black hole beyond General Relativity?

C Bejarano, GJ Olmo, D Rubiera-Garcia - Physical Review D, 2017 - APS
Exploring the characterization of singular black hole spacetimes, we study the relation
between energy density, curvature invariants, and geodesic completeness using a quadratic …

Einstein-Cartan wormhole solutions

MR Mehdizadeh, AH Ziaie - Physical Review D, 2017 - APS
In the present work, we investigate wormhole structures and the energy conditions
supporting them in Einstein-Cartan theory. The matter content consists of a Weyssenhoff …

Einstein's 1917 static model of the universe: a centennial review

C O'Raifeartaigh, M O'Keeffe, W Nahm… - The European Physical …, 2017 - Springer
We present a historical review of Einstein's 1917 paper 'Cosmological Considerations in the
General Theory of Relativity'to mark the centenary of a key work that set the foundations of …

Reconstruction, Thermodynamics and Stability of CDM Model in Gravity

ELB Junior, ME Rodrigues, IG Salako… - arxiv preprint arxiv …, 2015 - arxiv.org
We reconstruct the $\Lambda $ CDM model for $ f (T,\mathcal {T}) $ Theory, where $ T $ is
the torsion scalar and $\mathcal {T} $ the trace of the energy-momentum tensor. The result …

Einstein–Cartan cosmologies

SB Medina, M Nowakowski, D Batic - Annals of Physics, 2019 - Elsevier
Abstract Cosmologies based on General Relativity encompassing an anti-symmetric
connection (torsion) can display nice desirable features as the absence of the initial …

Effect of torsion on neutron star structure in Einstein-Cartan gravity

C Jockel, L Menger - Physical Review D, 2024 - APS
Einstein-Cartan gravity is a close historical sibling of general relativity that allows for
spacetime torsion. As a result, angular momentum couples to spacetime geometry in a …

Kinematics of einstein-cartan universes

K Pasmatsiou, CG Tsagas, JD Barrow - Physical Review D, 2017 - APS
We analyze the kinematics of cosmological spacetimes with nonzero torsion, in the
framework of the classical Einstein-Cartan gravity. After a brief introduction to the basic …

FRW in quadratic form of f(T) gravitational theories

GL Nashed - General Relativity and Gravitation, 2015 - Springer
We derive asymptote solution of a homogeneous and isotropic universe governed by the
quadratic form of the field equation of f (T) gravity. We explain how the higher order of the …