Gravitational decoupling in cosmology

Cedeño, Francisco X. Linares; Contreras, Ernesto

doi:10.1016/j.dark.2020.100543

Cited by 51 publications

(14 citation statements)

References 86 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[32][33][34][35][36][37][38][39][40][41][42][43][44][45][46][47][48][49]). Even this framework has been used widely in several scenarios such as 2 + 1 space-times [50][51][52][53][54][55], higher dimensions [56,57], asymptotically (A-)dS space-times [58], for axially symmetric systems and rotating black holes [59], hairy black holes [60][61][62], Cosmology [63,64], solutions in the background of Reissner-Nordström space-time [65][66][67], modified gravity theories [68][69][70][71][72][73][74][75][76][77][78], as well in braneworld gravity [79][80]…”

Section: Introductionmentioning

confidence: 99%

An anisotropic extension of Heintzmann IIa solution with vanishing complexity factor

Andrade

2022

Eur. Phys. J. C

View full text Add to dashboard Cite

This work is devoted to the construction of a new static and spherical solution for an anisotropic fluid distribution. The construction is based in the framework of gravitational decoupling through a particular case of the extended minimal geometric deformation called 2-steps GD. In this sense, the differential equations arising from gravitational decoupling are closed using the vanishing complexity factor. The Heintzmann IIa solution is used as seed solution. The solution fulfills the fundamental physical acceptability conditions for a restricted set of compactness parameters.

show abstract

Section: Introductionmentioning

confidence: 99%

An anisotropic extension of Heintzmann IIa solution with vanishing complexity factor

Andrade

2022

Eur. Phys. J. C

View full text Add to dashboard Cite

show abstract

“…MGD-decoupling methods represent a realistic algorithm that generate physically acceptable interior solutions for stellar systems (for reviews see ). Further, the MGD approach has been applied to study extensions of the theory of GR in a cosmological context [69]. This method is successfully applied in black hole scenarios [70][71][72][73][74][75][76] and one can extended to convert any non-rotating black hole spacetime into a rotating one [77,78].…”

Section: Introductionmentioning

confidence: 99%

Minimally deformed charged stellar model by gravitational decoupling in 5D Einstein–Gauss–Bonnet gravity

et al. 2022

View full text Add to dashboard Cite

We investigate the possibility of existing a class of compact charged spheres made of a charged perfect fluid in the framework of Einstein–Gauss–Bonnet theory in five-dimensional spacetime (5D EGB). In order to study spherically symmetric compact stars in EGB gravity, we prefer to apply a systematic and direct approach to decoupling gravitational sources via the minimal geometric deformation approach (MGD), which allows us to prove that the fluid must be anisotropic. In fact, we specify a well-known Krori–Barua spacetime in the MGD approach that helps us to determine the decoupling sector completely. Indeed, by using this approach, we found an exact and physically acceptable solution which satisfies all the elementary criteria of physical acceptability for a stellar solution via mimic approach. Finally, we show that the compactness factor in the presence of gravitational decoupling satisfies the Buchdahal limit under 5D EGB gravity.

show abstract

“…Viable anisotropic extensions of a cloud of strings have also been obtained by employing the same technique [33]. Cedeño and Contreras [34] showed that the decoupling approach is also applicable in the field of cosmology by deforming FLRW and Kantowski-Sachs spacetimes. Tello-Ortiz et al [35] extended the Durgapal IV solution to anisotropic domain via MGD.…”

Section: Introductionmentioning

confidence: 99%

Isotropization and Complexity of Decoupled Solutions in Self-interacting Brans-Dicke Gravity

Sharif¹,

Majid²

2022

Preprint

View full text Add to dashboard Cite

The aim of this work is to formulate two new solutions by decoupling the field equations via a minimal geometric deformation in the context of self-interacting Brans-Dicke gravity. We introduce an extra source in the anisotropic fluid distribution to generate new analogs of existing solutions. The radial metric function is transformed to decouple the field equations into two sets such that each array corresponds to one source only. The system corresponding to the original matter distribution is specified by metric functions of well-behaved solutions. On the other hand, the second set is closed by imposing constraints on the additional matter source. For this purpose, we have applied the isotropization condition as well as vanishing complexity condition on the new source. Smooth matching of interior and exterior spacetimes at the junction provides values of the unknown constants. Interesting physical features of corresponding models are checked by employing the mass and radius of the star PSR J1614-2230. It is concluded that both extensions yield viable and stable models for certain values of the decoupling parameter.

show abstract

Gravitational decoupling in cosmology

Cited by 51 publications

References 86 publications

An anisotropic extension of Heintzmann IIa solution with vanishing complexity factor

An anisotropic extension of Heintzmann IIa solution with vanishing complexity factor

Minimally deformed charged stellar model by gravitational decoupling in 5D Einstein–Gauss–Bonnet gravity

Isotropization and Complexity of Decoupled Solutions in Self-interacting Brans-Dicke Gravity

Contact Info

Product

Resources

About