Structural properties of generalized embedded wormhole solutions via dark matter halos in Einsteinian-cubic-gravity with quasi-periodic oscillations

Mustafa, Ghulam; Atamurotov, Farruh; Ghosh, Sushant G.

doi:10.1016/j.dark.2023.101214

Cited by 12 publications

(2 citation statements)

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“…Through using the concept of energy conditions, the existence of dark matter is examined [6,15]. A fundamental characteristic of traversable wormholes indicating the presence of exotic matter is that they violate null and weak energy restrictions, which is essential for their existence and stability [16]. For modified remote gravity subject to energy constraints, Bohmer et al construct [17] wormhole structures with specific redshift and shape functions.…”

Section: Introductionmentioning

confidence: 99%

New spherically symmetric wormhole solutions in f(Q)-gravity theory

Kiroriwal,

Kumar,

Maurya

et al. 2023

Phys. Scr.

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In this study, we examine the new spherically symmetric wormhole solutions in modified symmetric teleparallel (f(Q)) gravity theory. Using the Morris-Thorne method, we construct traversable wormholes with a physically reasonable energy condition and investigate their stability under small perturbations. We discuss two wormhole geometries under the linear functional form of f(Q) with two distinct shape functions. Our results show that the violations of energy conditions in f(Q) gravity provide a viable framework for the study of wormholes. We analyze the properties of wormholes and their behavior under different conditions such as energy conditions, equilibrium conditions, and volume integral quantifiers to check the stability of wormholes. By using the anisotropy parameter, we observed that model-I is attractive in nature and model-II is attractive and repulsive both varying according to the value of r and constant parameters.

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Section: Introductionmentioning

confidence: 99%

New spherically symmetric wormhole solutions in f(Q)-gravity theory

Kiroriwal,

Kumar,

Maurya

et al. 2023

Phys. Scr.

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“…For example, Sharif et al [50][51][52] investigated solutions involving galactic halo wormholes within different modified gravity theories. Furthermore, this area has seen additional compelling research contributions from others [53][54][55][56][57]. In this work, we explore traversable wormhole solutions in the context of the f (R, L m ) theory of gravity by employing DM halo profiles.…”

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confidence: 99%

Wormhole solutions under the effect of dark matter in f(R, L _m) gravity

Jaybhaye,

Tayde,

Sahoo

2024

Commun. Theor. Phys.

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In the background of $f(R, L_m)$ gravity, this work investigates three distinct dark matter halo profiles to test the possibility of generalised wormhole geometry within the galactic halo regions. The current study aims to accomplish these goals by examining various dark matter profiles including Universal Rotation Curves (URC), Navarro-Frenk-White (NFW) model-I, and NFW model-II inside two distinct $f(R, L_m)$ gravity models. According to the $f(R, L_m) = \frac{R}{2} + L_m^\alpha$ model, the DM halo density profiles produce suitable shape functions that meet all the necessary requirements for exhibiting the wormhole geometries with appropriate choice of free parameters. In addition, to examine DM profiles under the $f(R, L_m) = \frac{R}{2} + (1 + \lambda R)L_m$ model, we consider a specific shape function. Further, we observed that the derived solution from both two models violates the null energy constraints, confirming that the DM supports wormholes to maintain in the galactic halo.

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Possibility of the Traversable Wormholes in the Galactic Halos within 4D Einstein–Gauss–Bonnet Gravity

Hassan,

Sahoo

2024

Annalen der Physik

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Recently, there has been significant interest regarding the regularization of a limit of Einstein–Gauss–Bonnet (EGB) gravity. This regularization involves re‐scaling the Gauss–Bonnet (GB) coupling constant as , which bypasses Lovelock's theorem and avoids Ostrogradsky instability. A noteworthy observation is that the maximally or spherically symmetric solutions for all the regularized gravities coincide in the scenario. Considering this, the wormhole solutions in the galactic halos are investigated based on three different choices of dark matter (DM) profiles, such as Universal Rotation Curve, Navarro–Frenk–White, and Scalar Field Dark Matter with the framework of EGB gravity. Also, the Karmarkar condition is used to find the exact solutions for the shape functions under different non‐constant redshift functions. The energy conditions for each DM profile are discussed and the influence of GB coefficient in violating energy conditions are noticed, especially null energy conditions. Further, some physical features of wormholes, viz. complexity factor, active gravitational mass, total gravitational energy, and embedding diagrams, have been explored.

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Structural properties of generalized embedded wormhole solutions via dark matter halos in Einsteinian-cubic-gravity with quasi-periodic oscillations

Cited by 12 publications

References 72 publications

New spherically symmetric wormhole solutions in f(Q)-gravity theory

New spherically symmetric wormhole solutions in f(Q)-gravity theory

Wormhole solutions under the effect of dark matter in f(R, L _m) gravity

Possibility of the Traversable Wormholes in the Galactic Halos within 4D Einstein–Gauss–Bonnet Gravity

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Structural properties of generalized embedded wormhole solutions via dark matter halos in Einsteinian-cubic-gravity with quasi-periodic oscillations

Cited by 12 publications

References 72 publications

New spherically symmetric wormhole solutions in f(Q)-gravity theory

New spherically symmetric wormhole solutions in f(Q)-gravity theory

Wormhole solutions under the effect of dark matter in f(R, L m ) gravity

Possibility of the Traversable Wormholes in the Galactic Halos within 4D Einstein–Gauss–Bonnet Gravity

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Wormhole solutions under the effect of dark matter in f(R, L _m) gravity