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相关论文: Traversable wormholes in $f(R)$ gravity with const…

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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

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

Traversable wormhole solutions in General Relativity require exotic matter sources that violate the null energy condition (NEC), and such behavior maybe avoided in modified gravity. In this study, we analyze the energy conditions for…

广义相对论与量子宇宙学 · 物理学 2023-01-25 Anshuman Baruah , Parangam Goswami , Atri Deshamukhya

Wormhole solutions in General Relativity (GR) require \textit{exotic} matter sources that violate the null energy condition (NEC), and it is well known that higher-order modifications of GR and some alternative matter sources can support…

广义相对论与量子宇宙学 · 物理学 2024-03-06 Parangam Goswami , Anshuman Baruah , Atri Deshamukhya

This study aims to investigate the physical properties of wormhole geometry within the context of $f(T,\mathcal{T})$ gravity, which serves as a teleparallel formulation of general relativity. We study a linear model,…

广义相对论与量子宇宙学 · 物理学 2025-04-15 Foad Parsaei , Sara Rastgoo

In this paper, exact wormhole solutions in the context of $f(R)$ theory of gravity are investigated. Since the Einstein field equations are modified in 3+1 dimensions in the $f(R)$ theory of gravity, we have studied some possible solutions…

广义相对论与量子宇宙学 · 物理学 2021-10-15 Foad Parsaei , Sara Rastgoo

In the present work, a new form of the logarithmic shape function is proposed for the linear $f(R,T)$ gravity, $f(R,T)=R+2\lambda T$ where $\lambda$ is an arbitrary coupling constant, in wormhole geometry. The desired logarithmic shape…

综合物理 · 物理学 2021-08-02 Archana Dixit , Chanchal Chawla , Anirudh Pradhan

This article explores new physically viable wormhole solutions within the framework of f(R,Lm) gravity theory, incorporating noncommutative backgrounds and conformal symmetries. The study investigates the impact of model parameters on the…

广义相对论与量子宇宙学 · 物理学 2024-01-09 N. S. Kavya , G. Mustafa , V. Venkatesha , P. K. Sahoo

We compute the graviton one loop contribution to a classical energy in a \textit{traversable} wormhole background. The form of the shape function considered is obtained by the equation of state $p=\omega\rho$. We investigate the size of the…

广义相对论与量子宇宙学 · 物理学 2008-11-26 Remo Garattini

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

In this paper, I propose a static wormhole model within modified $f(R,T)$ gravity where $f(R,T)=R+2\lambda T$. The wormhole solutions have been evolved in four cases: three different shape function along with redshift…

广义相对论与量子宇宙学 · 物理学 2025-03-05 Payel Sarkar

This paper discusses several new exact solutions of static wormholes in $f(R)$ gravity with a noncommutative-geometry background, which replaces point-like structures by smeared objects. In the first part of the paper we assume the…

广义相对论与量子宇宙学 · 物理学 2014-10-21 Mubasher Jamil , Farook Rahaman , Ratbay Myrzakulov , P. K. F. Kuhfittig , Nasr Ahmed , Umar F Mondal

We study the tideless traversable wormholes in the $f(R)$ gravity metric formalism. First we consider three shape functions of wormholes and study their viabilities and structures. The connection between the $f(R)$ gravity model and…

广义相对论与量子宇宙学 · 物理学 2023-02-14 Dhruba Jyoti Gogoi , Umananda Dev Goswami

The paper deals with the static spherically symmetric wormhole solutions in $f(R)$-modified gravity theory with anisotropic matter field and for some particular choices for the shape functions. The present work may be considered as an…

广义相对论与量子宇宙学 · 物理学 2021-08-11 Bikram Ghosh , Saugata Mitra , Subenoy Chakraborty

Non-commutativity is a key feature of spacetime geometry. The current article explores the traversable wormhole solutions in the framework of $f(R,L_m)$ gravity within non-commutative geometry. By using the Gaussian and Lorentzian…

广义相对论与量子宇宙学 · 物理学 2023-07-10 N. S. Kavya , V. Venkatesha , G. Mustafa , P. K. Sahoo

Scalar-tensor $f(R)$ theory of gravity is considered in the framework of a simple inhomogeneous space-time model. In this we use the reconstruction technique to look for possible evolving wormhole solutions within viable $f(R)$ gravity…

广义相对论与量子宇宙学 · 物理学 2017-08-14 Subhra Bhattacharya , S. Chakraborty

In this work, we investigate static and spherically symmetric traversable wormhole solutions within the framework of the extended symmetric teleparallel gravity, specifically the $\mathcal{F}(Q,\mathcal{L}_{m},\mathcal{T})$ gravity theory,…

广义相对论与量子宇宙学 · 物理学 2025-07-15 Rounak Manna , Krishna Pada Das , Ujjal Debnath

In the present article we propose a new hybrid shape function for wormhole (WH)s in the modified $f(R,T)$ gravity. The proposed shape function satisfied the conditions of WH geometry. Geometrical behavior of WH solutions are discussed in…

广义相对论与量子宇宙学 · 物理学 2020-05-22 Parbati Sahoo , Sanjay Mandal , P. K. Sahoo

The theoretical construction of a traversable wormhole proposed by Morris and Thorne maintains complete control over the geometry by assigning both the shape and redshift functions, thereby leaving open the determination of the…

广义相对论与量子宇宙学 · 物理学 2020-07-27 Peter K. F. Kuhfittig

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