Can holographic dark energy increase the mass of the wormhole?

Chattopadhyay, Surajit; Momeni, Davood; Altaibayeva, Aziza; Myrzakulov, Ratbay

doi:10.1007/s10509-014-2204-4

Cited by 3 publications

(2 citation statements)

References 71 publications

(76 reference statements)

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“…Later on, Michel [19] analyzed the accretion process of a steady-state spherically symmetric flow of matter into a compact object. Consequently, several authors studied accretion process of various kinds of matter onto different types of black holes [20][21][22][23][24][25][26][27][28][29][30][31][32][33] and wormholes [34][35][36][37][38][39][40]. We should clarify that we are considering matter flow on the background of EBWH assuming that the Einstein minimally coupled scalar field φ has entirely gone into building the background EBWH geometry and that matter is flowing on top of that geometry.…”

Section: Introductionmentioning

confidence: 99%

Accretion Flow onto Ellis–Bronnikov Wormhole

et al. 2021

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Study of accretion onto wormholes is rather rare compared to that onto black holes. In this paper, we consider accretion flow of cosmological dark energy modeled by barotropic fluid onto the celebrated Ellis–Bronnikov wormhole (EBWH) built by Einstein minimally coupled scalar field ϕ, violating the null energy condition. The accreting fluid is assumed to be phantom, quintessence, dust and stiff matter. We begin by first pointing out a mathematical novelty showing how the EBWH can lead to the Schwarzschild black hole under a complex Wick rotation. Then, we analyze the profiles of fluid radial velocity, density and the rate of mass variation of the EBWH due to accretion and compare the profiles with those of the Schwarzschild black hole. We also analyze accretion to the massless EBWH that has zero ADM mass but has what we call nonzero Wheelerian mass (“mass without mass”), composed of the non-trivial scalar field, that shows gravitational effects. Our conclusion is that the mass of SBH due to phantom accretion decreases consistently with known results, while, in contrast, the mass of EBWH increases. Exactly an opposite behavior emerges for non-phantom accretion to these two objects. Accretion to massless EBWH (i.e., to nonzero Wheelerian mass) shares the same patterns as those of the massive EBWH; hence there is no way to distinguish massive and massless cases by means of accretion flow. The contrasting mass variations due to phantom accretion could be a reflection of the distinct topology of the central objects.

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Section: Introductionmentioning

confidence: 99%

Accretion Flow onto Ellis–Bronnikov Wormhole

et al. 2021

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“…It has also been proved that the dark energy causes accretion onto blackholes as well as wormholes. [13] Chattopadhyay et al [14] studied the accretion of three holographic dark energies onto wormholes in modified gravity and concluded that when dark energies accrete on wormhole, it causes an increase in the mass of wormhole in the phantom phase of the universe. Some important modified gravitational theories are introduced in the recent two decades.…”

Section: Introductionmentioning

confidence: 99%

$f({\mathcal{G}},T)$ Gravity with Cylindrically Symmetric Relativistic Fluids

Shamir¹,

Sadiq²

2019

Commun. Theor. Phys.

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The aim of this paper is to examine the structure scalars with account of theory of gravity. We consider the cylindrically symmetric spacetime with dissipative anisotropic background. We have determined the structure scalars by orthogonally decomposing the Riemann curvature tensor and it is shown that these scalars are associated with fundamental properties of fluid. We further investigate the mass function along with the transport equation and discuss their role on the evolutionary stages of relativistic stellar systems. We have also analyzed these structure scalars for static fluid distributions and it is concluded that all possible solutions of field equations can be expressed through these scalars.

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Accretion of dark energy onto stringy electrically charged black hole

Geng

Duan

2015

Astrophys Space Sci

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This paper studies the accretion of dark energy onto a stringy electrically charged black hole. Solution for a general spherical accretion of the ideal fluid onto a black hole is given first. It is shown that the location of the critical point lies inside the event horizon. In our paper, two solvable models of dark energy are considered. For the linearized model, the expression for the mass of the black hole is derived. And for the Chaplygin gas model, the change rate of the black hole mass is obtained. The results show that the mass of the stringy electrically charged black hole is fixed when ρ + p = 0, but decreases at ρ + p < 0 and increases at ρ +p > 0. Then, we conclude that the accretion of phantomlike dark energy makes the mass of the black hole decrease, and the accretion of the quintessence-like dark energy can increase the black hole mass. The bigger the absolute value of the pressure is, the faster the black hole mass decreases.

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Can holographic dark energy increase the mass of the wormhole?

Cited by 3 publications

References 71 publications

Accretion Flow onto Ellis–Bronnikov Wormhole

Accretion Flow onto Ellis–Bronnikov Wormhole

$f({\mathcal{G}},T)$ Gravity with Cylindrically Symmetric Relativistic Fluids

Accretion of dark energy onto stringy electrically charged black hole

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