Gravitational waves in theories with a non-minimal curvature-matter coupling

Bertolami, Orfeu; Gomes, Cláudio; Lobo, Francisco S. N.

doi:10.1140/epjc/s10052-018-5781-5

Cited by 62 publications

(27 citation statements)

References 122 publications

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“…So, in Ref. [35], it was also recently analysed the propagation of gravitational waves modes in nonminimal curvature-matter theories, for the cases of cosmological constant and dark energy-like fluid as matter source, showing a good agreement with the recent gravitational wave constraints.…”

Section: Introductionmentioning

confidence: 66%

Inflation from a nonlinear magnetic monopole field nonminimally coupled to curvature

Otalora

Овгун

Saavedra

et al. 2018

J. Cosmol. Astropart. Phys.

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In the context of nonminimally coupled f (R) gravity theories, we study early inflation driven by a nonlinear monopole magnetic field which is nonminimally coupled to curvature. In order to isolate the effects of the nonminimal coupling between matter and curvature we assume the pure gravitational sector to have the Einstein-Hilbert form. Thus, we study the most simple model with a nonminimal coupling function which is linear in the Ricci scalar. From an effective fluid description, we show the existence of an early exponential expansion regime of the Universe, followed by a transition to a radiation-dominated era. In particular, by applying the most recent results of the Planck collaboration we set the limits on the parameter of the nonminimal coupling, and the quotient of the nonminimal coupling and the nonlinear monopole magnetic scales. We found that these parameters must take large values in order to satisfy the observational constraints. Furthermore, by obtaining the relation for the graviton mass, we show the consistency of our results with the recent gravitational wave data GW170817 of LIGO and Virgo.

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Section: Introductionmentioning

confidence: 66%

Inflation from a nonlinear magnetic monopole field nonminimally coupled to curvature

Otalora

Овгун

Saavedra

et al. 2018

J. Cosmol. Astropart. Phys.

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“…Pode-se também estudar as ondas originadas em teorias alternativas da gravitação, por exemplo, em teorias com um acoplamento não-mínimo entre matéria e curvatura 14 . …”

Section: Ondas Gravitacionaisunclassified

Ondas gravitacionais

Bertolami

Gomes

2017

Rev. Ciência Elem.

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“…One of such models is the non-minimal matter-curvature coupling, where, in addition to a replacement of the scalar curvature by a generic function of it, the matter sector is non-minimally coupled to a further generic function of the Ricci scalar [2]. Proposing such modifications requires that these models have to pass through a series of tests to be considered as valid candidates [2][3][4][5][6], see for example Ref. [7] for a review.…”

Section: Introductionmentioning

confidence: 99%

Using numerical methods from nonlocal optics to simulate the dynamics of N -body systems in alternative theories of gravity

et al. 2020

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The generalized Schrödinger-Newton system of equations with both local and nonlocal nonlinearities is widely used to describe light propagating in nonlinear media under the paraxial approximation. However, its use is not limited to optical systems and can be found to describe a plethora of different physical phenomena, for example, dark matter or alternative theories for gravity. Thus, the numerical solvers developed for studying light propagating under this model can be adapted to address these other phenomena. Indeed, in this work we report the development of a solver for the HiLight simulations platform based on GPGPU supercomputing and the required adaptations for this solver to be used to test the impact of new extensions of the Theory of General Relativity in the dynamics of the systems, in particular those based on theories with non-minimal coupling between curvature and matter. This approach in the study of these new models offers a quick way to validate them since their analytical analysis is difficult. The simulation module, its performance, and some preliminary tests are presented in this paper.

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Gravitational waves in theories with a non-minimal curvature-matter coupling

Cited by 62 publications

References 122 publications

Inflation from a nonlinear magnetic monopole field nonminimally coupled to curvature

Inflation from a nonlinear magnetic monopole field nonminimally coupled to curvature

Ondas gravitacionais

Using numerical methods from nonlocal optics to simulate the dynamics of N -body systems in alternative theories of gravity

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