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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

A dynamical theory of traversable wormholes is detailed in spherical symmetry. Generically a wormhole consists of a tunnel of trapped surfaces between two mouths, defined as temporal outer trapping horizons with opposite senses, in mutual…

广义相对论与量子宇宙学 · 物理学 2009-06-30 Sean A. Hayward

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

The current interests in the universe motivate us to go beyond Einstein's General theory of relativity. One of the interesting proposals comes from a new class of teleparallel gravity named symmetric teleparallel gravity, i.e., $f(Q)$…

广义相对论与量子宇宙学 · 物理学 2021-06-09 Zinnat Hassan , Sanjay Mandal , P. K. Sahoo

The Maldacena-Qi model describes two copies of the Sachdev-Ye-Kitaev model coupled with an additional coupling, and is dual to the Jackiw-Teitelboim gravity which exhibits an eternal traversable wormhole in the low-temperature limit. In…

强关联电子 · 物理学 2020-12-18 Tian-Gang Zhou , Pengfei Zhang

We compare the effects of Noncommutative Geometry and Gravity's Rainbow on traversable wormholes which are sustained by their own gravitational quantum fluctuations. Fixing the geometry on a well tested model, we find that the final result…

广义相对论与量子宇宙学 · 物理学 2017-03-22 Remo Garattini

We explore the possibility of traversable wormhole formation in the dark matter halos in the context of $f(Q)$ gravity. We obtain the exact wormhole solutions with anisotropic matter source based on the Bose-Einstein condensate,…

广义相对论与量子宇宙学 · 物理学 2024-10-28 G. Mustafa , Zinnat Hassan , P. K. Sahoo

We study the geometry of a wormhole spacetime filled with anisotropic matter in the context of general relativity. In the course of the study, new static and spherically symmetric solutions, analytic and numerical ones, are found. We…

广义相对论与量子宇宙学 · 物理学 2019-09-04 Hyeong-Chan Kim , Youngone Lee

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

Firstly, we review the pointwise and averaged energy conditions, the quantum inequality and the notion of the ``volume integral quantifier'', which provides a measure of the ``total amount'' of energy condition violating matter. Secondly,…

广义相对论与量子宇宙学 · 物理学 2009-11-10 Francisco S. N. Lobo

In this work, a general class of wormhole geometries in conformal Weyl gravity is analyzed. A wide variety of exact solutions of asymptotically flat spacetimes is found, in which the stress energy tensor profile differs radically from its…

广义相对论与量子宇宙学 · 物理学 2008-11-26 Francisco S. N. Lobo

This paper generalizes two of the author's earlier wormhole solutions that are characterized by an extra spatial dimension. This paper adds the assumption that the components of the line element are functions not only of the radial…

广义相对论与量子宇宙学 · 物理学 2025-06-17 Peter K. F. Kuhfittig

This paper discusses the feasibility of thin-shell wormholes in spacetimes of embedding class one admitting a one-parameter group of conformal motions. It is shown that the surface energy density $\sigma$ is positive, while the surface…

广义相对论与量子宇宙学 · 物理学 2024-08-13 Peter K. F. Kuhfittig

Local solutions are a vivid and long-living topic in gravitational physics. We consider exact static pseudo-spherically symmetric solutions of semi-classical Einstein's equations in presence of the trace anomaly contribution. We investigate…

广义相对论与量子宇宙学 · 物理学 2023-09-14 Marco Calzá , Alessandro Casalino , Lorenzo Sebastiani

In this work, we analyse the evolution of time-dependent traversable wormhole geometries in a Friedmann-Lema\^{i}tre-Robertson-Walker background in the context of the scalar-tensor representation of hybrid metric-Palatini gravity. We deduce…

广义相对论与量子宇宙学 · 物理学 2021-04-06 Mahdi Kord Zangeneh , Francisco S. N. Lobo

In this work, we consider wormhole geometries in third-order Lovelock gravity and investigate the possibility that these solutions satisfy the energy conditions. In this framework, by applying a specific equation of state, we obtain exact…

广义相对论与量子宇宙学 · 物理学 2016-06-09 Mohammad Reza Mehdizadeh , Francisco S. N. Lobo

In this work, we intend to explore wormhole geometries in the framework of $f(R,L_m)$ gravity. We derive the field equations for the generic $f(R,L_m)$ function by assuming the static and spherically symmetric Morris-Thorne wormhole metric.…

广义相对论与量子宇宙学 · 物理学 2023-08-01 Raja Solanki , Zinnat Hassan , P. K. Sahoo

In this paper, we investigate the existence of asymptotically flat wormhole geometries within the framework of Rastall-Rainbow modified gravity, a synthesis of two distinct theoretical models: Rastall theory and the Rainbow description. Our…

广义相对论与量子宇宙学 · 物理学 2023-09-12 Takol Tangphati , C. R. Muniz , Anirudh Pradhan , Ayan Banerjee

When Morris and Thorne first proposed that wormholes might be actual physical structures suitable for interstellar travel, they needed to pay close attention to certain traversability conditions such as low tidal forces, which placed severe…

广义相对论与量子宇宙学 · 物理学 2024-07-15 Peter K. F. Kuhfittig , Vance D. Gladney

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
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