Scale-dependent polytropic black hole

Contreras, Ernesto; Rincón, Ángel; Koch, Benjamin; Bargueño, Pedro

doi:10.1140/epjc/s10052-018-5709-0

Cited by 100 publications

(127 citation statements)

References 63 publications

Supporting

Mentioning

124

Contrasting

Order By: Relevance

“…What is more, it would be interesting to investigate how the properties of the solution obtained here are modified in the framework of the so-called scale-dependent scenario, where the coupling constants acquire a dependence on the scale, i.e. {G 0 , Λ 0 } → {G k , Λ k }), and which has received considerable attention lately [76][77][78][79][80][81][82][83][84][85][86][87][88][89][90][91][92]. In this case, the TOV equations should be modified to account for the running of the gravitational coupling and the Gauss-Bonnet parameter α.…”

Section: Numerical Resultsmentioning

confidence: 99%

Relativistic strange quark stars in Lovelock gravity

Panotopoulos

Rincón

2019

Eur. Phys. J. Plus

Self Cite

View full text Add to dashboard Cite

We study relativistic non-rotating stars in the framework of Lovelock gravity. In particular, we consider the Gauss-Bonnet term in a five-dimensional spacetime, and we investigate the impact of the Gauss-Bonnet parameter on properties of the stars, both isotropic and anisotropic. For matter inside the star, we assume a relativistic gas of de-confined massless quarks. We integrate the modified Tolman-Oppenheimer-Volkoff equations numerically, and we obtain the mass-to-radius profile, the compactness of the star as well as the gravitational red-shift for several values of the Gauss-Bonnet parameter. The maximum star mass and radius are also reported. PACS. XX.XX.XX No PACS code given 1 IntroductionAlthough our observable Universe is clearly four-dimensional, the question "How many dimensions are there?" is one of the fundamental questions High Energy Physics tries to answer. Kaluza-Klein theories [1,2], supergravity [3] and Superstring/M-Theory [4,5] have pushed forward the idea that extra spatial dimensions may exist. In more than four dimensions higher order curvature terms are natural in Lovelock theory [6], and also higher order curvature corrections appear in the low-energy effective equations of Superstring Theory [7].The amount of published works in the literature reveals that Lovelock gravity is an exciting and active field. Black hole physics [8][9][10][11][12][13][14], cosmological solutions [15][16][17][18] and holographic superconductors exploiting the gauge/gravity duality [19] are some of the areas that have been explored in the framework of Lovelock gravity. However, the astrophysical implications of Lovelock theory should also be investigated. Compact objects [20][21][22], such as white dwarfs and neutron stars, are the final fate of stars, and comprise excellent cosmic laboratories to study, test and constrain new physics and/or alternative theories of gravity under extreme conditions that cannot be reached in Earth-based experiments. It is well-known that the properties of compact objects, such as mass and radius, depend both on the equation-of-state (EoS) of ultra-dense matter and on the underlying theory of gravity.A couple of years after the discovery of the neutron by James Chadwick [23,24], neutron stars were predicted to exist by Baade and Zwicky [25]. Indeed, several decades after that, the discoveries of pulsars in the Crab and Vela supernova remnants [26] led to their identification as neutron stars just one year after the discovery of pulsars in 1967 [27]. On the other hand quark matter is by assumption absolutely stable, and as such it may be the true ground state of hadronic matter [28,29]. Therefore a new class of hypothetical compact objects has been postulated to exist. These compact objects could serve as an alternative to neutron stars, and they might offer us a plausible explanation of the puzzling observation of some super-luminous supernovae [30,31], which occur in about one out of every 1000 supernovae explosions, and which are more than 100 times more luminous than regular su...

show abstract

Section: Numerical Resultsmentioning

confidence: 99%

Relativistic strange quark stars in Lovelock gravity

Panotopoulos

Rincón

2019

Eur. Phys. J. Plus

Self Cite

View full text Add to dashboard Cite

show abstract

“…To apply the variational procedure (21), however, the knowledge of the exact beta functions of the problem is required. Since in many cases the precise form of these functions is unknown (or at least uncertain) one can, for the case of simple black holes, impose a null energy condition and solve for the couplings G(r ), Λ(r ), e(r ) directly [50,51,53,54,[80][81][82]. This philosophy of assuring the consistency of the equations by imposing a null energy condition will also be applied in the following study on Einstein-Maxwell and Einstein-powerMaxwell black holes.…”

Section: Scale Dependent Coupling and Scale Settingmentioning

confidence: 99%

Scale-dependent ( $$2+1$$ 2 + 1 )-dimensional electrically charged black holes in Einstein-power-Maxwell theory

et al. 2018

Self Cite

View full text Add to dashboard Cite

In this work we extend and generalize our previous work on the scale dependence at the level of the effective action of black holes in the presence of non-linear electrodynamics. In particular, we consider the Einstein-powerMaxwell theory without a cosmological constant in (2 + 1) dimensions, assuming a scale dependence of both the gravitational and the electromagnetic coupling and we investigate in detail how the scale-dependent scenario affects the horizon and thermodynamic properties of the classical black holes for any value of the power parameter. In addition, we solve the corresponding effective field equations imposing the "null energy condition" in order to obtain analytical solutions. The implications of quantum corrections are also briefly discussed.

show abstract

“…In black hole physics the impact of the SD scenario on properties of black holes has been studied over the a E-mail: grigorios.panotopoulos@tecnico.ulisboa.pt b E-mail: angel.rincon@pucv.cl c E-mail: ilidio.lopes@tecnico.ulisboa.pt last years, and it has been found that the scale dependence modifies the horizon, the thermodynamics as well as the quasinormal spectra of classical black hole backgrounds [15][16][17][18][19][20][21][22]. However, the astrophysical implications of the SD scenario should be investigated as well.…”

Section: Introductionmentioning

confidence: 99%

“…The idea is largely inspired by the asymptotic safety program and related approaches as the well-known Renormalization group improvement method [28][29][30][31]. Taking them as inspiration, some authors introduced the now known scale-dependent gravity which has been systematically used in black holes physics [32][33][34][35][36][37][38][39][40][41][42][43][44][45][46][47], and recently, in cosmological problems [48,49]. The crucial point of scale-dependent gravity is to promote the classical parameter {A 0 , B 0 , (· · · ) 0 } to functions which depends on the energy scale k, namely {A k , B k , (· · · ) k }.…”

Section: Introductionmentioning

confidence: 99%

Interior solutions of relativistic stars in the scale-dependent scenario

2020

Self Cite

View full text Add to dashboard Cite

We study relativistic stars in the scale-dependent scenario, which is one of the approaches to quantum gravity, and where Newton's constant is promoted to a scale-dependent quantity. First, the generalized structure equations are derived here for the first time. Then they are integrated numerically assuming a linear equation-of-state in the simplest MIT bag model for quark matter. We compute the radius, the mass and the compactness of strange quarks stars, and we show that the energy conditions are fulfilled.PACS. PACS-key discribing text of that key -PACS-key discribing text of that key

show abstract

Scale-dependent polytropic black hole

Cited by 100 publications

References 63 publications

Relativistic strange quark stars in Lovelock gravity

Relativistic strange quark stars in Lovelock gravity

Scale-dependent ( $$2+1$$ 2 + 1 )-dimensional electrically charged black holes in Einstein-power-Maxwell theory

Interior solutions of relativistic stars in the scale-dependent scenario

Contact Info

Product

Resources

About