Papers by Christian Corda
AIP Conference Proceedings, Jan 1, 2008
In this this paper the stochastic background of gravitational waves (SBGWs) is analyzed with the ... more In this this paper the stochastic background of gravitational waves (SBGWs) is analyzed with the auxilium of the WMAP data. We emphasize that, in general, in previous works in the literature about the SBGWs, old COBE data were used. After this, we want to face the problem of how the SBGWs and f(R) gravity can be related, showing, vice versa, that a revealed SBGWs could be a powerly probe for a given theory of gravity. In this way, it will also be shown that the conformal treatment of SBGWs can be used to parametrize in a natural way f(R) theories.
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Even if Einstein's General Relativity achieved a great success and overcame lots of experime... more Even if Einstein's General Relativity achieved a great success and overcame lots of experimental tests, it also showed some shortcomings and flaws which today advise theorists to ask if it is the definitive theory of gravity. In this proceeding paper it is shown that, if advanced projects on the detection of Gravitational Waves (GWs) will improve their sensitivity, allowing to
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Astrophysics and Space Science, 2011
Recent years have seen increasing efforts to directly measure some aspects of the general relativ... more Recent years have seen increasing efforts to directly measure some aspects of the general relativistic gravitomagnetic interaction in several astronomical scenarios in the solar system. After briefly overviewing the concept of gravitomagnetism from a theoretical point of view, we review the performed or proposed attempts to detect the Lense-Thirring effect affecting the orbital motions of natural and artificial bodies in
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Modern Physics Letters A, 2011
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Journal of Cosmology and Astroparticle Physics, 2007
ABSTRACT
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International Journal of Modern Physics A, 2007
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Arxiv preprint arXiv:0905.3298, 2009
Abstract: We propose a way to remove black hole singularities by using a particular nonlinear ele... more Abstract: We propose a way to remove black hole singularities by using a particular nonlinear electrodynamics Lagrangian that has been recently used in various astrophysics and cosmological frameworks. In particular, we adapt the cosmological analysis ...
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Modern …, 2007
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Starting from the origin of Einstein general relativity (GR) the request of Mach on the theory's ... more Starting from the origin of Einstein general relativity (GR) the request of Mach on the theory's structure has been the core of the foundational debate. That problem is strictly connected with the nature of the mass-energy equivalence. It is well known that this is exactly the key point that Einstein used to realize a metric theory of gravitation having an
unequalled beauty and elegance. On the other hand, the current requirements of particle physics and the open questions within extended gravity theories request a better understanding of Equivalence Principle (EP).
The MOND theory by Milgrom proposes a modify of Newtonian dynamics and a variation of the ratio mi/mg , to be tested, at least, within the solar system. In this paper we attack this important issue from the general point of view of a weak modifcation of GR which considers a direct coupling between the Ricci curvature scalar and the matter Lagrangian. It is shown that a non geodesic ratio mi/mg can be fixed and that Milgrom acceleration is retrieved at low energies.
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—Starting from the origin of Einstein's general relativity (GR), the request of Mach on the theor... more —Starting from the origin of Einstein's general relativity (GR), the request of Mach on the theory's structure has been the core of the foundational debate. That problem is strictly connected with the nature of the mass-energy equivalence. It is well known that this is exactly the key point that Einstein used to realize a metric theory of gravitation having an unequalled beauty and elegance. On the other hand, the current requirements of particle physics and the open questions within extended gravity theories request a better understanding of the Equivalence Principle (EP). The MOND theory by Milgrom proposes a modification of Newtonian dynamics, and we consider a direct coupling between the Ricci curvature scalar and the matter Lagrangian showing that a nongeodesic ratio m i /m g can be fixed and that Milgrom's acceleration is retrieved at low energies.
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Papers by Christian Corda
unequalled beauty and elegance. On the other hand, the current requirements of particle physics and the open questions within extended gravity theories request a better understanding of Equivalence Principle (EP).
The MOND theory by Milgrom proposes a modify of Newtonian dynamics and a variation of the ratio mi/mg , to be tested, at least, within the solar system. In this paper we attack this important issue from the general point of view of a weak modifcation of GR which considers a direct coupling between the Ricci curvature scalar and the matter Lagrangian. It is shown that a non geodesic ratio mi/mg can be fixed and that Milgrom acceleration is retrieved at low energies.
unequalled beauty and elegance. On the other hand, the current requirements of particle physics and the open questions within extended gravity theories request a better understanding of Equivalence Principle (EP).
The MOND theory by Milgrom proposes a modify of Newtonian dynamics and a variation of the ratio mi/mg , to be tested, at least, within the solar system. In this paper we attack this important issue from the general point of view of a weak modifcation of GR which considers a direct coupling between the Ricci curvature scalar and the matter Lagrangian. It is shown that a non geodesic ratio mi/mg can be fixed and that Milgrom acceleration is retrieved at low energies.