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相关论文: Non-Commutative Effects on Wormholes in Rastall-Ra…

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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

We consider the effects of Gravity's Rainbow on the self-sustained equation which is responsible to find new traversable wormholes configurations powered by their own gravitational quantum fluctuations. The form of the shape function…

广义相对论与量子宇宙学 · 物理学 2017-12-29 Remo Garattini

Traversable wormholes in General Relativity (GR) require exotic matter sources that violate the null energy condition (NEC), and such behavior may be avoided in modified gravity. Moreover, the concept of non-commutative geometry as a…

广义相对论与量子宇宙学 · 物理学 2022-10-18 Anshuman Baruah , Parangam Goswami , Atri Deshamukhya

In this work, we find exact wormhole solutions in the context of noncommutative geometry, and further explore their physical properties and characteristics. The energy density of these wormhole geometries is a smeared and particle-like…

广义相对论与量子宇宙学 · 物理学 2008-12-23 Remo Garattini , Francisco S. N. Lobo

We consider rotating wormhole solutions in general relativity supported by a complex non-phantom spinor field (which provides a nontrivial spacetime topology) and electromagnetic fields. The solutions are asymmetric, regular, asymptotically…

广义相对论与量子宇宙学 · 物理学 2026-04-21 Vladimir Dzhunushaliev , Vladimir Folomeev

In the context of Gravity's Rainbow, we compute the graviton one-loop contribution to a classical energy in a traversable wormhole background, by considering the equation of state $p_{r} = \omega\rho$. The investigation is evaluated by…

综合物理 · 物理学 2015-12-15 Remo Garattini , Francisco S. N. Lobo

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

In this paper, we investigate the thermodynamic behavior of a horizonless compact object within the framework of Rastall-Rainbow (RR) gravity. Working with local shell thermodynamics for gravastar and an exterior fiducial temperature, we…

广义相对论与量子宇宙学 · 物理学 2025-12-16 Sareh Eslamzadeh , Saheb Soroushfar

We explore wormhole solutions sourced by Casimir energy density involving generalized uncertainty principle corrections within the framework of Rastall-Rainbow gravity. The questions of traversability and stability, as well as the presence…

广义相对论与量子宇宙学 · 物理学 2024-12-10 Emmanuele Battista , Salvatore Capozziello , Abdelghani Errehymy

We consider novel wormhole solutions supported by a matter content that minimally violates the null energy condition. More specifically, we consider an equation of state in which the sum of the energy density and radial pressure is…

广义相对论与量子宇宙学 · 物理学 2014-11-10 Mariam Bouhmadi-Lopez , Francisco S. N. Lobo , Prado Martin-Moruno

Noncommutative geometry, an offshoot of string theory, replaces point-like particles by smeared objects. These local effects have led to wormhole solutions in a semiclassical setting, but it has also been claimed that the noncommutative…

广义相对论与量子宇宙学 · 物理学 2024-12-24 Peter K. F. Kuhfittig

The possibility of modifications on general relativity is investigated. We propose an alternative theory of gravity constructed with the combination of Rastall and Rainbow theories. The hydrostatic equilibrium equations are obtained in…

高能天体物理现象 · 物理学 2019-07-31 Clésio E. Mota , Luis C. N. Santos , Guilherme Grams , Franciele M. da Silva , Débora P. Menezes

Rastall's theory belongs to the class of non-conservative theories of gravity. In vacuum, the only non-trivial static, spherically symmetric solution is the Schwarzschild one, except in a very special case. When a canonical scalar field is…

广义相对论与量子宇宙学 · 物理学 2017-03-03 K. A. Bronnikov , J. C. Fabris , O. F. Piattella , E. C. Santos

This paper investigates static wormhole solutions through Noether symmetry approach in the context of energy-momentum squared gravity. This newly developed proposal resolves the singularity of big-bang and yields feasible cosmological…

广义相对论与量子宇宙学 · 物理学 2021-05-12 M. Sharif , M. Zeeshan Gul

This paper investigates static spherically symmetric traversable wormhole solutions in $f(\mathcal{G},T)$ gravity ($\mathcal{G}$ and $T$ represent the Gauss-Bonnet invariant and trace of the energy-momentum tensor, respectively). We…

广义相对论与量子宇宙学 · 物理学 2018-01-10 M. Sharif , Ayesha Ikram

We consider Non-local Gravity in view to obtain stable and traversable wormhole solutions. In particular, the class of Non-local Integral Kernel Theories of Gravity, with the inverse d'Alembert operator in the gravitational action, is taken…

广义相对论与量子宇宙学 · 物理学 2022-11-28 Salvatore Capozziello , Nisha Godani

This research delves into the potential existence of traversable wormholes (WHs) within the framework of modified, curvature based gravity. The modification includes linear perturbations of the matter Lagrangian and the trace of the…

广义相对论与量子宇宙学 · 物理学 2025-04-02 Niklas Loewer , Moreshwar Tayde , P. K. Sahoo

In this work, we have considered the spherically symmetric stellar system in the contexts of Rastall-Rainbow gravity theory in presence of isotropic fluid source with electromagnetic field. The Einstein-Maxwell's field equations have been…

综合物理 · 物理学 2019-09-04 Ujjal Debnath

We constructed thin-shell wormholes using the well-known "cut and paste" technique for static black holes sourced by an anisotropic fluid within the context of the Rastall gravity. Using the generalized Lanczos equations we explored the…

广义相对论与量子宇宙学 · 物理学 2020-07-14 Iarley P. Lobo , Martin G. Richarte , J. P. Morais Graça , H. Moradpour

Properties of $n(\ge 5)$-dimensional static wormhole solutions are investigated in Einstein-Gauss-Bonnet gravity with or without a cosmological constant $\Lambda$. We assume that the spacetime has symmetries corresponding to the isometries…

广义相对论与量子宇宙学 · 物理学 2008-11-26 Hideki Maeda , Masato Nozawa