The aim of this paper is to find higher order geometrical corrections to the Einstein–Hilbert action that can lead only to second order equations of motion. The metric formalism is used, and static spherically-symmetric and Friedmann–Lemaître space-times are considered, in four dimensions. The Fulling, King, Wybourne and Cummings (FKWC) basis is introduced in order to consider all of the possible invariant scalars, and both polynomial and non-polynomial gravities are investigated
We show that the problem of stabilization of extra dimensions in Kaluza-Klein type cosmology may be ...
Modifications of general relativity usually include extra dynamical degrees of freedom, which to dat...
This work is an application of the second order gauge theory for the Lorentz group, where a descript...
The aim of this paper is to find higher order geometrical corrections to the Einstein–Hilbert action...
Starting from the original Einstein action, sometimes called the Gamma squared action, we propose a ...
We study several aspects of higher-order gravities constructed from general contractions of the Riem...
In the review part of the thesis we summarize various modified theories of gravity, especially those...
This paper considers diffeomorphism invariant theories of gravity coupled to matter, with second ord...
Modifications of Einstein's theory of gravitation have been extensively considered in the past year...
The weak-field and slow-motion limit of f(R,G) gravity is developed up to (v/c)(4) order in a spheri...
Recently the so-called mimetic gravity approach has been used to obtain corrections to the Friedmann...
We find an exact pp--gravitational wave solution of the fourth order gravity field equations. The so...
In this thesis, higher derivative theories and constrained dynamics are investigated in detail. In t...
We study regular, static, spherically symmetric solutions of Yang-Mills theories employing higher or...
Solving field equations in the context of higher curvature gravity theories is a formidable task. Ho...
We show that the problem of stabilization of extra dimensions in Kaluza-Klein type cosmology may be ...
Modifications of general relativity usually include extra dynamical degrees of freedom, which to dat...
This work is an application of the second order gauge theory for the Lorentz group, where a descript...
The aim of this paper is to find higher order geometrical corrections to the Einstein–Hilbert action...
Starting from the original Einstein action, sometimes called the Gamma squared action, we propose a ...
We study several aspects of higher-order gravities constructed from general contractions of the Riem...
In the review part of the thesis we summarize various modified theories of gravity, especially those...
This paper considers diffeomorphism invariant theories of gravity coupled to matter, with second ord...
Modifications of Einstein's theory of gravitation have been extensively considered in the past year...
The weak-field and slow-motion limit of f(R,G) gravity is developed up to (v/c)(4) order in a spheri...
Recently the so-called mimetic gravity approach has been used to obtain corrections to the Friedmann...
We find an exact pp--gravitational wave solution of the fourth order gravity field equations. The so...
In this thesis, higher derivative theories and constrained dynamics are investigated in detail. In t...
We study regular, static, spherically symmetric solutions of Yang-Mills theories employing higher or...
Solving field equations in the context of higher curvature gravity theories is a formidable task. Ho...
We show that the problem of stabilization of extra dimensions in Kaluza-Klein type cosmology may be ...
Modifications of general relativity usually include extra dynamical degrees of freedom, which to dat...
This work is an application of the second order gauge theory for the Lorentz group, where a descript...
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