Academic literature on the topic 'Extended theories of gravity'

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Journal articles on the topic "Extended theories of gravity"

1

Capozziello, Salvatore, and Mariafelicia De Laurentis. "Extended Theories of Gravity." Physics Reports 509, no. 4-5 (2011): 167–321. http://dx.doi.org/10.1016/j.physrep.2011.09.003.

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2

Fatibene, Lorenzo, and Simon Garruto. "Extended gravity." International Journal of Geometric Methods in Modern Physics 11, no. 07 (2014): 1460018. http://dx.doi.org/10.1142/s0219887814600184.

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We shall show equivalence between Palatini-f(ℛ) theories and Brans–Dicke (BD) theories at the level of action principles in generic dimension with generic matter coupling. We do that by introducing the Helmholtz Lagrangian associated to Palatini-f(ℛ) theory and then performing frame transformations in order to recover Einstein frame and BD frame. This clarifies the relation among different formulations and the transformations among different frames. Additionally, it defines a formulation a lá Palatini for the BD theory which is dynamically equivalent to metric BD (unlike the standard Palatini-
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3

Komada, Meguru. "Causality of 3D extended gravity theories." Modern Physics Letters A 34, no. 16 (2019): 1950122. http://dx.doi.org/10.1142/s0217732319501220.

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Causality is one of the most important properties to understand gravity theories. It gives us not only a method to confirm that the gravity theories are really consistent, but also gives implications about the properties which unknown fundamental physics should obey. We investigate the causality of three-dimensional (3D) gravity theories, which are considered to be important, by using the Shapiro time delay effect in the Shock wave geometry. One of such gravity theories is the Zwei-Dreibein Gravity (ZDG) theory, which is a consistent 3D gravity theory. In ZDG theory, the serious problems can b
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4

Crisostomi, Marco, Kazuya Koyama, and Gianmassimo Tasinato. "Extended scalar-tensor theories of gravity." Journal of Cosmology and Astroparticle Physics 2016, no. 04 (2016): 044. http://dx.doi.org/10.1088/1475-7516/2016/04/044.

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5

Sherf, Yotam. "Hyperbolicity constraints in extended gravity theories." Physica Scripta 94, no. 8 (2019): 085005. http://dx.doi.org/10.1088/1402-4896/ab1352.

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6

de Mello, R. O. "Extended 2D generalized dilaton gravity theories." Classical and Quantum Gravity 25, no. 17 (2008): 175003. http://dx.doi.org/10.1088/0264-9381/25/17/175003.

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7

Aschieri, Paolo, and Leonardo Castellani. "Extended gravity theories from dynamical noncommutativity." General Relativity and Gravitation 45, no. 2 (2012): 411–26. http://dx.doi.org/10.1007/s10714-012-1479-4.

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8

Capozziello, Salvatore, Rocco D’Agostino, and Orlando Luongo. "Extended gravity cosmography." International Journal of Modern Physics D 28, no. 10 (2019): 1930016. http://dx.doi.org/10.1142/s0218271819300167.

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Cosmography can be considered as a sort of a model-independent approach to tackle the dark energy/modified gravity problem. In this review, the success and the shortcomings of the [Formula: see text]CDM model, based on General Relativity (GR) and standard model of particles, are discussed in view of the most recent observational constraints. The motivations for considering extensions and modifications of GR are taken into account, with particular attention to [Formula: see text] and [Formula: see text] theories of gravity where dynamics is represented by curvature or torsion field, respectivel
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9

Vinckers, U. K. Beckering, Á. de la Cruz-Dombriz, and F. J. Maldonado Torralba. "Focusing conditions for extended teleparallel gravity theories." Journal of Cosmology and Astroparticle Physics 2020, no. 12 (2020): 020. http://dx.doi.org/10.1088/1475-7516/2020/12/020.

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10

Adami, Hamed, Mohammad Reza Setare, Tahsin Çağrı Şişman, and Bayram Tekin. "Conserved charges in extended theories of gravity." Physics Reports 834-835 (November 2019): 1–85. http://dx.doi.org/10.1016/j.physrep.2019.08.003.

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