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4 papers · 1 filter
On analytical solutions of f(R) modified gravity theories in FLRW cosmologies
Silvije Domazet, Voja Radovanovic, Marko Simonovic +1
A novel analytical method for f(R) modified theories without matter in Friedmann-Lemaitre-Robertson-Walker spacetimes is introduced. The equation of motion for the scale factor in…
Extra gauge symmetries in BHT gravity
M. Blagojević, B. Cvetković
We study the canonical structure of the Bergshoeff-Hohm-Townsend massive gravity, linearized around a maximally symmetric background. At the critical point in the space of paramete…
Conserved charges in 3D gravity
M. Blagojević, B. Cvetković
The covariant canonical expression for the conserved charges, proposed by Nester, is tested on several solutions in 3D gravity with or without torsion and topologically massive gra…
Nonlinear electrodynamics in 3D gravity with torsion
M. Blagojević, B. Cvetković, O. Misković
We study exact solutions of nonlinear electrodynamics coupled to three-dimensional gravity with torsion. We show that in any static and spherically symmetric configuration, at leas…