Consistent relativistic mean-field models constrained by GW170817

Lourenço, O.; Dutra, M.; Lenzi, César H.; Flores, César V.; Menezes, D. P.

doi:10.1103/physrevc.99.045202

Cited by 88 publications

(71 citation statements)

References 40 publications

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“…We start by testing the RR theory with one RMF model, the IU-FSU parametrization proposed in [28]. Besides the tests performed in [37], IU-FSU is also successful in explaining the recent constraint that comes from the GW170817 observation [48]. The results obtained with various parameter values are displayed in Table I and Figure 1.…”

Section: Resultsmentioning

confidence: 99%

Combined Rastall and rainbow theories of gravity with applications to neutron stars

et al. 2019

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The possibility of modifications on general relativity is investigated. We propose an alternative theory of gravity constructed with the combination of Rastall and Rainbow theories. The hydrostatic equilibrium equations are obtained in order to test the new theory in neutron stars, whose mass-radius diagrams are obtained using modern equations of state of nuclear matter derived from relativistic mean field models and compared with the ones computed by the Tolman-Oppenheimer-Volkoff equations. We conclude that substantial modifications are obtained even for very small alterations on the two free parameters, making the reproduction of astrophysical observations an easy task.

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Section: Resultsmentioning

confidence: 99%

Combined Rastall and rainbow theories of gravity with applications to neutron stars

et al. 2019

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“…On the other hand, the recent constraint that comes from the neutron star GW170817 [23] observation was analyzed in the context of Rastall-Rainbow gravity in [24] where the authors show that the rainbow function with f 1 (E/E p ) ≥ 1 is more appropriate than the case where f 1 (E/E p ) < 1. Note that for the values used for E/E p in the Figure 1, it is possible see that rainbow functions (4) and (5)…”

Section: Electrostatic Self-energymentioning

confidence: 99%

Electrostatic self-interaction of a charged particle in the space-time of a cosmic string in the context of gravity’s rainbow

Santos¹,

Bezerra²

2019

Gen Relativ Gravit

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We analyze the electrostatic self-energy of a point like electrically charged particle induced by a cosmic string in the context of gravity's rainbow, as well the electrostatic self-force on this particle.The possibility of the solution associated with a charged particle to be altered by modifications in dispersion relations of the space-time is discussed. We show that the self-energy depends on the rainbow functions and that this quantity can either increase or decrease depending on the rainbow function chosen, as compared with analogous result in the framework of general relativity. With respect to the self-force, its dependence with the rainbow functions is also pointed out.

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“…However, if hyperons and other exotic particles are included, none of them satisfy the later constraint (See Ref. [54] and the references therein for details.). The later is known in the literature as "hyperons puzzle".…”

Section: Introductionmentioning

confidence: 99%

Anisotropic neutron stars with hyperons: implication of the recent nuclear matter data and observations of neutron stars

et al. 2020

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Motivated by a recent report by Biwas and Bose (Phys Rev D 99:104002, 2019) that the observations of GW170817 to constrain the extent of pressure anisotropy in neutron stars within Bower–Liang anisotropic model, we systematically study the effects of anisotropic pressure on properties of the neutron stars with hyperons. The equation of state is calculated using the relativistic mean-field model with a BSP parameter set to determine nucleonic coupling constants and by using SU(6) and hyperon potential depths to determine hyperonic coupling constants. We investigate three models of anisotropic pressure known in literature namely Bowers and Liang (Astrophys J 88:657, 1974), Horvat et al. (Class Quant Grav 28:025009, 2011), and Cosenza et al. (J Math Phys (NY) 22:118, 1981). The reliability of the equation of state used is checked by comparing the parameters of the corresponding EOS to recent experimental data. The mass–radius, moment of inertia, and tidal deformability results of Bowers–Liang, Horvat et al., and Cosenza et al. anisotropic models are compared to the corresponding recent results extracted from the analysis of some NS observation data. We have found that the radii predicted by anisotropic NS are sensitive to the anisotropic model used and the results obtained by using the model proposed by Horvat et al. with anisotropic free parameter $$\varUpsilon ~\approx -$$Υ≈- 1.15 are relative compatible with all taken constraints.

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Consistent relativistic mean-field models constrained by GW170817

Cited by 88 publications

References 40 publications

Combined Rastall and rainbow theories of gravity with applications to neutron stars

Combined Rastall and rainbow theories of gravity with applications to neutron stars

Electrostatic self-interaction of a charged particle in the space-time of a cosmic string in the context of gravity’s rainbow

Anisotropic neutron stars with hyperons: implication of the recent nuclear matter data and observations of neutron stars

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