Wormhole solutions in Rastall-like-torsion-trace gravity

Saleem, Rabia; Aslam, M. Israr; Rasool, Komal

doi:10.1016/j.cjph.2022.12.015

Cited by 8 publications

(2 citation statements)

References 32 publications

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“…These ECs are simplified as, NEC, WEC, strong EC (SEC), and dominant EC (DEC). At r ≡ r 0 , the following inequalities are used to understand the WH geometry [27].…”

Section: Energy Conditions and Wormhole Geometrymentioning

confidence: 99%

A study of wormhole geometries in symmetric teleparallel gravity

2023

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In this manuscript, we find the exact solutions of asymptotically flat wormhole (WH) geometry in thebackground of symmetric $f(Q)$ gravity (vanishing curvature and torsion) where the non-metricity term$Q$ is accountable for fundamental interaction. In this scenario, we choose two different $f(Q)$gravity models (logarithmic and exponential) along with the special choice of shape function$b(r)=\frac{r}{\exp(\gamma(r-r_{0}))}$, and redshift function $\phi(r)=\frac{r_{0}}{2r}$. Here,$\gamma$ affects the radius of curvature of WH. Under this scenario, we analyze the viability ofthe shape function and energy constraints of the WH solutions for each model. For both models,we determine the validity regions of energy conditions under some parameter spaces of the modelparameters. The allowed parameter spaces for logarithmic and exponential models are illustratedin Tables I and II, respectively. The validity region for the null energy condition represents thatWH geometry in chosen $f(Q)$ gravity models is supported by ordinary matter while exotic matterelsewhere. Furthermore, we represent the WH construction by embedding diagrams andshows that the derived WH solutions are stable for the allowed range of model parameters. Finally,it is concluded that such particular modified gravity can give us a more realistic and stableWH geometry.

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“…These ECs are simplified as, NEC, WEC, strong EC (SEC), and dominant EC (DEC). At r ≡ r 0 , the following inequalities are used to understand the WH geometry [27].…”

Section: Energy Conditions and Wormhole Geometrymentioning

confidence: 99%

A study of wormhole geometries in symmetric teleparallel gravity

2023

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“…These advancements in the understanding of wormholes have contributed greatly to the field of theoretical physics. Thereafter, wormholes became the subject of extensive research [6][7][8][9][10][11][12][13][14][15][16][17][18][19] by physicists. The study of wormholes typically begins with an assumption about their geometric structure and then involves calculating the corresponding material source required to create such a structure.…”

Section: Introductionmentioning

confidence: 99%

Microlensing and multi-images problem of static spherical symmetric wormhole

Gao¹,

Liu²

2023

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In this paper, we develop a framework to re-examine the weak lensing (including the microlensing) effects of the static spherical symmetric wormhole in terms of the radial equation of state η = pr ρ (REoS). As for its application, we calculate its magnification, and event rate under this REoS, in which we show that the maximal value of magnification of the Ellis-Bronnikov wormhole is only related to the relative position and intrinsic angle, whose the maximal value is around five. For the event rate, our results indicate that one cannot distinguish the Eillis-Bronnikov wormhole and charged wormhole, but its order is much higher than the vacuum case, in which all these metrics belong to the static spherical symmetric wormhole metric. By

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