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相关论文: Wormhole model with a hybrid shape function in f(R…

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The present work examines whether evolving wormhole solution is possible or not in $f(R,T)$ modified gravity theory. In the background of inhomogeneous FLRW type wormhole configuration the field equations are investigated for different…

广义相对论与量子宇宙学 · 物理学 2025-04-11 Dhritimalya Roy , Ayanendu Dutta , Bikram Ghosh , Subenoy Chakraborty

In this study, we investigate the possible existence of static and spherically symmetric wormhole solutions within the context of the newly formulated extended $f(Q,T)$ gravity. We analyze a linear model, $f(Q,T)=\alpha Q+ \beta T$, and…

广义相对论与量子宇宙学 · 物理学 2026-02-03 Sara Rastgoo , Foad Parsaei , Soudabe Nasirimoghadam

Morris \& Thorne \cite{morris1} proposed geometrical objects called traversable wormholes that act as bridges in connecting two spacetimes or two different points of the same spacetime. The geometrical properties of these wormholes depend…

广义相对论与量子宇宙学 · 物理学 2019-07-17 Nisha Godani , Gauranga C. Samanta

In this work, we analyze the wormhole solutions in $f(R)$ gravity. Specifically we sought for wormhole geometry solutions for the following three shape functions: (i) $b(r)=r_{0}+\rho_{0}r_{0}^{3}\ln\left(\frac{r_{0}}{r}\right)$, (ii)…

广义相对论与量子宇宙学 · 物理学 2022-04-22 B. Mishra , A. S. Agrawal , S. K. Tripathy , S. Ray

In this paper, we present new generalized wormhole (WH) solutions within the context of $f(R)$ gravity. Specifically, we focus on $f(R)$ gravitational theories formulated in the metric formalism, with our investigation centered on a…

广义相对论与量子宇宙学 · 物理学 2024-08-15 Abdelghani Errehymy , Youssef Khedif , Orhan Donmez , Mohammed Daoud , Kairat Myrzakulov , Sabit Bekov

In this work, we explore the possibility that static and spherically symmetric traversable wormhole geometries are supported by modified teleparallel gravity or f(T) gravity, where T is the torsion scalar. Considering the field equations…

广义相对论与量子宇宙学 · 物理学 2012-02-16 Christian G. Boehmer , Tiberiu Harko , Francisco S. N. Lobo

The primary objective of this article is to study the energy condition bounds for spherical and hyperbolic wormholes in well-known $f(R,T)$ theory of gravity. For this purpose, we formulate the field equations for spherically and…

广义相对论与量子宇宙学 · 物理学 2022-08-19 M. Zubair , Quratulien Muneer , Saira Waheed

We propose, as a novelty in the literature, the modelling of wormholes within the particular case of the $f(R,T)$ gravity, namely $f(R,T)=R+\alpha R^{2}+\lambda T$, with $R$ and $T$ being the Ricci scalar and trace of the energy-momentum…

广义相对论与量子宇宙学 · 物理学 2018-01-23 P. K. Sahoo , P. H. R. S. Moraes , Parbati Sahoo

In this paper, we derive some new exact solutions of static wormholes in f(T) gravity. We discuss independent cases of the pressure components including isotropic and anisotropic pressure. Lastly we consider radial pressure satisfying a…

广义相对论与量子宇宙学 · 物理学 2013-01-22 Mubasher Jamil , Davood Momeni , Ratbay Myrzakulov

In this paper, we study the energy conditions of charged traversable wormholes in the framework of $f(R, \mathscr{L}_m)$ modified gravity. In the first case, we derive the shape functions (SFs) for two different choices of the charge…

广义相对论与量子宇宙学 · 物理学 2026-05-18 Sagar V. Soni , A. C. Khunt , Farook Rahaman , A. H. Hasmani

Morris and Thorne \cite{morris1} proposed traversable wormholes, hypothetical connecting tools, using the concept of Einstein's general theory of relativity. In this paper, the modification of general relativity (in particular $f(R,T)$…

广义相对论与量子宇宙学 · 物理学 2020-05-05 Nisha Godani , Gauranga C. Samanta

We study the traversable wormhole solutions for a logarithmic corrected $f(R)$ model by considering two different statements of shape $b(r)$ and redshift $\Phi(r)$ functions. We calculate the parameters of the model including energy density…

广义相对论与量子宇宙学 · 物理学 2022-03-29 J. Sadeghi , M. Shokri , S. Noori Gashti , B. Pourhassan , P. Rudra

In this present work, we have studied the traversable wormhole geometries in $f(R,T)$ gravity theory, where $R$ denotes the Ricci scalar and $T$ is the trace of the energy-momentum tensor. Firstly, two new shape functions are obtained for…

广义相对论与量子宇宙学 · 物理学 2023-03-01 Bikram Ghosh , Saugata Mitra

In this article, we have discussed Morris and Thorne (MT) wormhole solutions in a modified theory of gravity that admits conformal motion. Here we explore the wormhole solutions in $f(R,\,T)$ gravity, which is a function of the Ricci scalar…

广义相对论与量子宇宙学 · 物理学 2022-05-04 Piyali Bhar , Pramit Rej , P. K. Sahoo

Traversable wormholes, tunnel like structures introduced by Morris \& Thorne \cite{morris1}, have a significant role in connection of two different space-times or two different parts of the same space-time. The characteristics of these…

广义相对论与量子宇宙学 · 物理学 2019-02-20 Nisha Godani , Gauranga C. Samanta

Alternative gravity is nowadays an extremely important tool to address some persistent observational issues, such as the dark sector of the universe. They can also be applied to stellar astrophysics, leading to outcomes one step ahead of…

广义相对论与量子宇宙学 · 物理学 2019-08-15 P. H. R. S. Moraes , P. K. Sahoo

This study explores the potential existence of traversable wormholes influenced by a global monopole charge within the $f(Q)$ gravity framework. To elucidate the characteristics of these wormholes, we conducted a comprehensive analysis of…

广义相对论与量子宇宙学 · 物理学 2024-06-26 Moreshwar Tayde , P. K. Sahoo

In this work, the study of traversable wormholes in $f(R)$ gravity with the function $f(R)=R+\alpha R^n$, where $\alpha$ and $n$ are arbitrary constants, is taken into account. The shape function $b(r)=\frac{r}{\exp(r-r_0)}$, proposed by…

广义相对论与量子宇宙学 · 物理学 2020-01-29 Nisha Godani , Gauranga C. Samanta

In this work, we construct traversable wormhole geometries in the context of f(R) modified theories of gravity. We impose that the matter threading the wormhole satisfies the energy conditions, so that it is the effective stress-energy…

广义相对论与量子宇宙学 · 物理学 2009-11-12 Francisco S. N. Lobo , Miguel A. Oliveira

In this work, we have studied the traversable wormholes geometry in $f(R)$ theory gravity, where $R$ be the Ricci scalar. The wormhole solution for some assumed $f(R)$ functions have been presented. The assumption of $f(R)$ is based on the…

广义相对论与量子宇宙学 · 物理学 2021-12-24 B. Mishra , A. S. Agrawal , S. K. Tripathy. Saibal. Ray