Constraining the brane tension in Randall-Sundrum cosmology through gravitational waves from binary neutron stars

Moraes, P. H. R. S.; Miranda, Oswaldo D.

doi:10.1007/s10509-014-2121-6

Cited by 12 publications

(12 citation statements)

References 40 publications

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“…Many contributions to Physics, Astrophysics and Cosmology will come from the imminent detection of gravitational waves (GWs) [57,58]. Their detection will clarify some persistent and important issues, such as the absolute ground state of matter [59], and also contemplates a powerful tool in estimating parameters of compact binary systems [60], constraining the equation of state of neutron stars [61] and brane cosmological parameters values in braneworld models [62], and distinguishing GR from alternative theories of gravity [63].…”

Section: Discussion and Perspectivesmentioning

confidence: 99%

A complete cosmological scenario from $f(R,T^φ)$ gravity theory

Moraes,

Santos

2016

Preprint

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Recent elaborated by T. Harko and collaborators, the f (R, T ) theories of gravity contemplate an optimistic alternative to dark energy, for which R and T stand for the Ricci scalar and the trace of the energymomentum tensor, respectively. Although the literature has shown that the T dependence on the gravitational part of the action -which is due to the consideration of quantum effects -may induce some novel features in the scope of late-time cosmological dynamics, in the radiation-dominated universe, when T = 0, no contributions seem to rise from such theories. Apparently, f (R, T ) contributions to a radiation-dominated universe may rise only from the f (R, T φ ) approach, which is nothing but the f (R, T ) gravity in the case of a self-interacting scalar field whose trace of the energymomentum tensor is T φ . We intend, in this article, to show how f (R, T φ ) theories of gravity can contribute to the study of the primordial stages of the universe. Our results predict a graceful exit from inflationary stage to a radiation-dominated era. They also predict a late-time cosmic acceleration after a matter-dominated phase, making the f (R, T φ ) theories able to describe, in a self-consistent way, all the different stages of the universe dynamics.

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Section: Discussion and Perspectivesmentioning

confidence: 99%

A complete cosmological scenario from $f(R,T^φ)$ gravity theory

Moraes,

Santos

2016

Preprint

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show abstract

“…Their detection will clarify some persistent and important issues, such as the absolute ground state of matter [59], and also will lead us to consider it a powerful tool in estimating the parameters of compact binary systems [60], constraining the equation of state of neutron stars [61] and the values of brane cosmological parameters in braneworld models [62], and distinguishing GR from alternative theories of gravity [63].…”

Section: Another Further Work May Rise From An Alternative Form For Fmentioning

confidence: 99%

A complete cosmological scenario from $$f(R,T^{\phi })$$ f ( R , T ϕ )

Moraes¹,

Santos²

2016

Eur. Phys. J. C

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Recent elaborated by Harko et al., the f (R, T ) theories of gravity allow one to contemplate an optimistic alternative to dark energy, for which R and T stand for the Ricci scalar and the trace of the energy-momentum tensor, respectively. Although the literature has shown that the T dependence on the gravitational part of the action -which is due to the consideration of quantum effects -may induce some novel features in the scope of late-time cosmological dynamics, in the radiation-dominated universe, when T = 0, no contributions seem to arise from such theories. Apparently, f (R, T ) contributions to a radiation-dominated universe may arise only from the f (R, T φ ) approach, which is nothing but the f (R, T ) gravity in the case of a selfinteracting scalar field whose trace of the energy-momentum tensor is T φ . We intend, in this article, to show how f (R, T φ ) theories of gravity can contribute to the study of the primordial stages of the universe. Our results predict a graceful exit from an inflationary stage to a radiation-dominated era. They also predict a late-time cosmic acceleration after a matter-dominated phase, enabling the f (R, T φ ) theories to describe, in a self-consistent way, all the different stages of the dynamics of the universe.

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“…Forthcoming observations will contribute to the study and understanding of a large number of research fields in Physics, Astrophysics and Cosmology, from the absolute ground state of matter [2] to the upper limits on the brane tension values of braneworld cosmologies [3]. In the near future, we may also be able to estimate parameters of compact binary systems [4]- [7], constrain the equation of state of neutron stars [8]- [13] and distinguish General Relativity (GR) from alternative theories of gravity [14]- [17].…”

Section: Introductionmentioning

confidence: 99%

Gravitational waves inf(R,T)andf(R,T
Alves
¹
,
Moraes
²
,
Araújo
³

et al. 2016
Phys. Rev. D
118
0
53
0
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There is a host of alternative theories of gravitation in the literature, among them the f (R, T ) and f (R, T φ ) theories recently elaborated by T. Harko and collaborators. In these theories, R, T and T φ are respectively the Ricci scalar, and the traces of the energy-momentum tensors of matter and of a scalar field. There is already in the literature a series of studies of different forms of the f (R, T ) and f (R, T φ ) functions as well as their cosmological consequences. However, there are no studies so far related to gravitational waves. Here we consider such an issue, in particular, studying the putative extra polarization modes that can well appear in the scope of such theories. Different functional forms of f (R, T φ ) are considered and the gravitational waveforms are found for the extra polarization modes in the cases they are present.

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Constraining the brane tension in Randall-Sundrum cosmology through gravitational waves from binary neutron stars

Cited by 12 publications

References 40 publications

A complete cosmological scenario from $f(R,T^φ)$ gravity theory

A complete cosmological scenario from $f(R,T^φ)$ gravity theory

A complete cosmological scenario from $$f(R,T^{\phi })$$ f ( R , T ϕ )

Gravitational waves inf(R,T)andf(R,T
Alves
¹
,
Moraes
²
,
Araújo
³

et al. 2016
Phys. Rev. D
118
0
53
0
View full text Add to dashboard Cite

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Constraining the brane tension in Randall-Sundrum cosmology through gravitational waves from binary neutron stars

Cited by 12 publications

References 40 publications

A complete cosmological scenario from $f(R,T^φ)$ gravity theory

A complete cosmological scenario from $f(R,T^φ)$ gravity theory

A complete cosmological scenario from $$f(R,T^{\phi })$$ f ( R , T ϕ )

Gravitational waves inf(R,T)andf(R,TAlves1, Moraes2, Araújo3 et al. 2016Phys. Rev. D1180530View full textAdd to dashboardCite

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Gravitational waves inf(R,T)andf(R,T
Alves
¹
,
Moraes
²
,
Araújo
³

et al. 2016
Phys. Rev. D
118
0
53
0
View full text Add to dashboard Cite