中文
相关论文

相关论文: Some Specific Wormhole Solutions in Extended $f(R,…

200 篇论文

A possible astrophysical object to be found in General Relativity is the wormhole. This special solution describes a topological bridge connecting points in two distinguished universes or two different points in the same universe. Despite…

广义相对论与量子宇宙学 · 物理学 2023-06-21 Moreshwar Tayde , Joao R. L. Santos , Julia N. Araujo , P. K. Sahoo

In this manuscript, we explore the existence of wormhole solutions exhibiting spherical symmetry in a modified gravity namely $f(R,T)$ theory by involving some aspects of non-commutative geometry. For this purpose, we consider the…

广义相对论与量子宇宙学 · 物理学 2020-04-02 M. Zubair , Saira Waheed , G. Mustafa , Hamood Ur Rehman

In this paper, we have systematically discussed the existence of the spherically symmetric wormhole solutions in the framework of $f(Q,\,T)$ gravity under two interesting non-commutative geometries such as Gaussian and Lorentzian…

广义相对论与量子宇宙学 · 物理学 2023-07-25 Moreshwar Tayde , Zinnat Hassan , P. K. Sahoo

We consider $f(R, T)$ theory of gravity, in which the gravitational Lagrangian is given by an arbitrary function of the Ricci scalar and the trace of the energy-momentum tensor, to study static spherically symmetric wormhole geometries…

广义相对论与量子宇宙学 · 物理学 2021-08-03 Ayan Banerjee , M. K. Jasim , Sushant G. Ghosh

A class of $f(R, T)$ theories extends the Einstein-Hilbert action by incorporating a general function of $R$ and $T$, the Ricci scalar and the trace of the ordinary energy-momentum tensor $T_{\mu\nu}$, respectively, thereby introducing a…

广义相对论与量子宇宙学 · 物理学 2025-07-30 Yaghoub Heydarzade , Maryam Ranjbar

The presence of exotic matter for the existence of the wormhole geometry has been an unavoidable problem in GR. In recent studies researchers have tried to deal with this issue using modified gravity theories where the WH geometry is…

综合物理 · 物理学 2022-04-19 Umesh Kumar Sharma , Shweta , Ambuj Kumar Mishra

This article explores wormhole solutions within the framework of Finsler geometry and the modified gravity theory. Modifications in gravitational theories, such as $f(\mathcal{R}, \mathcal{T})$ gravity, propose alternatives that potentially…

广义相对论与量子宇宙学 · 物理学 2024-07-11 Yashwanth B. R. , Narasimhamurthy S. K. , Z. Nekouee

Wormholes (WHs) are considered as hypothetical shortcuts or tunnels in spacetime. In general relativity (GR), the fundamental ingredient of WH geometry is the presence of exotic matter at the throat, which is responsible for the violation…

广义相对论与量子宇宙学 · 物理学 2020-02-19 Parbati Sahoo , Annika Kirschner , P. K. Sahoo

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

The current study explores the generalized embedded wormhole solutions in the background of $f(\mathcal{R},\mathcal{G})$ gravity, where $\mathcal{R}$ represents the Ricci scalar and $\mathcal{G}$ denotes the Gauss-Bonnet invariant. To…

广义相对论与量子宇宙学 · 物理学 2023-04-14 Asifa Ashraf , Saadia Mumtaz , Faisal Javed , Zhiyue Zhang

This study explores asymptotically flat wormhole solutions in $f(Q,T)=\alpha Q+ \beta T$ gravity, expanding upon our prior work (arXiv:2602.00527v1) with matter Lagrangian density, $L_m=-P$ . Here, we examine the implications of employing…

广义相对论与量子宇宙学 · 物理学 2026-05-21 Sodabe Nasirimoghadam , Foad Parsaei , Sara Rastgoo

We have proposed a novel shape function on which the metric that models traversable wormholes is dependent. Using this shape function, the energy conditions, equation of state and anisotropy parameter are analyzed in $f(R)$ gravity,…

广义相对论与量子宇宙学 · 物理学 2020-05-19 Gauranga C. Samanta , Nisha Godani , Kazuharu Bamba

Morris and Thorne developed wormhole solutions in the late 1980s when they discovered a recipe that wormholes must follow for travelers to cross them safely. They describe exotic matter as satisfying $-p_{r} > \rho$, where $p_{r}$ is the…

广义相对论与量子宇宙学 · 物理学 2024-06-25 P. H. R. S. Moraes , A. S. Agrawal , B. Mishra

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

In this paper, we consider wormhole geometries in the context of teleparallel equivalent of general relativity (TEGR) as well as $f(T)$ gravity. The TEGR is an alternative geometrical formulation of Einstein's general relativity, where…

广义相对论与量子宇宙学 · 物理学 2020-04-15 Ksh. Newton Singh , Ayan Banerjee , Farook Rahaman , M. K. Jasim

In this work, we introduce a novel set of asymptotically flat wormhole solutions within the framework of $f(R,T)$ theory of gravity. Considering a linear $f(R,T)=R+ 2\lambda T$ form, we show that a wide variety of wormhole solutions with…

广义相对论与量子宇宙学 · 物理学 2024-08-09 Sara Rastgoo , Foad Parsaei

In this study, we explore the new wormhole solutions in the framework of new modified $f(R,L_m)$ gravity. To obtain a characteristic wormhole solution, we use anisotropic matter distribution and a specific form of energy density. As second…

广义相对论与量子宇宙学 · 物理学 2023-05-12 N. S. Kavya , V. Venkatesha , G. Mustafa , P. K. Sahoo , S. V. Divya Rashmi

Static and spherically symmetric wormhole solutions can be reconstructed in the framework of curvature based Extended Theories of Gravity. In particular, extensions of the General Relativity, in metric and curvature formalism give rise to…

广义相对论与量子宇宙学 · 物理学 2021-02-23 Vittorio De Falco , Emmanuele Battista , Salvatore Capozziello , Mariafelicia De Laurentis

This study explores asymptotically flat wormhole solutions within the framework of $f(R,T)$ gravity. We analyze $f(R,T)$ expressed as $f(R,T)=R+\lambda T+\lambda_1 T^2$. A linear equation of state is employed for both radial and lateral…

广义相对论与量子宇宙学 · 物理学 2024-10-29 Foad Parsaei , Sara Rastgoo

To find more deliberate $f(R, T)$ astrophysical solutions, we proceed by studying wormhole geometries under the assumption of spherical symmetry and the existence of a conformal Killing symmetry to attain the more acceptable astrophysical…

广义相对论与量子宇宙学 · 物理学 2020-08-21 Ayan Banerjee , Ksh. Newton Singh , M. K. Jasim , Farook Rahaman