Results 111 to 120 of about 22,622 (206)

Shadow and strong gravitational lensing of new wormhole solutions supported by embedding Class-I condition

open access: yesEuropean Physical Journal C: Particles and Fields
This study deals with the new class of embedded wormhole solutions in the background of general relativity. Two newly calculated wormhole solutions satisfy all the required properties.
Niyaz Uddin Molla   +4 more
doaj   +1 more source

A Secure Localization Approach against Wormhole Attacks Using Distance Consistency

open access: yesEURASIP Journal on Wireless Communications and Networking, 2010
Wormhole attacks can negatively affect the localization in wireless sensor networks. A typical wormhole attack can be launched by two colluding attackers, one of which sniffs packets at one point in the network and tunnels them through a wired or ...
Honglong Chen   +3 more
doaj   +1 more source

Hot Casimir wormholes

open access: yesJournal of Cosmology and Astroparticle Physics
Abstract In this paper, we have for the first time considered the consequences of finite temperature contributions to a traversable wormhole. This was done by using finite temperature generalization of the Casimir effect as a source of a hot traversable wormhole.
Remo Garattini, Mir Faizal
openaire   +2 more sources

THE WORMHOLE HAZARD

open access: yesTime and Matter, 2006
To predict the outcome of (almost) any experiment we have to assume that our spacetime is globally hyperbolic. The wormholes, if they exist, cast doubt on the validity of this assumption. At the same time, no evidence has been found so far (either observational, or theoretical) that the possibility of their existence can be safely neglected.
openaire   +2 more sources

Generalized Finslerian Wormhole Models in f(R,T) Gravity

open access: yesParticles
This article explores wormhole solutions within the framework of Finsler geometry and the modified gravity theory. Modifications in gravitational theories, such as f(R,T) gravity, propose alternatives that potentially avoid the exotic requirements.
B. R. Yashwanth   +2 more
doaj   +1 more source

Experimental research on growth mechanism of acid wormhole in carbonate matrix

open access: yesYouqicang pingjia yu kaifa, 2020
Matrix acidification is one of the important measures for the stimulation of carbonate reservoirs. The studies on its formation regularity and influencing factors of acid wormhole are the basic theories of carbonate matrix acidification.
YANG Zhaozhong   +5 more
doaj  

Charged wormhole solutions in 4D Einstein-Gauss-Bonnet gravity

open access: yesNuclear Physics B
In the present work, we construct models of static wormholes in 4-dimensional Einstein-Gauss-Bonnet (4D EGB) gravity with an (an)isotropic energy momentum tensor (EMT) and a Maxwell field as supporting matters for the wormhole geometry assuming a ...
Piyachat Panyasiripan   +2 more
doaj   +1 more source

Impact of charge on traversable wormhole solutions and modified f(R, ϕ) gravity

open access: yesNuclear Physics B
In this paper, we investigate the traversable wormhole solutions in the presence of charge within the framework of f(R, ϕ) gravity, where R represents the Ricci scalar and ϕ denotes the scalar potential, respectively.
Adnan Malik   +5 more
doaj   +1 more source

Are slowly rotating Ellis-Bronnikov wormholes stable?

open access: yesPhysics Letters B
We investigate the radial perturbations of Ellis-Bronnikov wormholes (l=0) in a slowly rotating background expanded up to second order in rotation. We find indications that simple wormhole solutions such as Ellis-Bronnikov in General Relativity can be ...
Bahareh Azad   +3 more
doaj   +1 more source

Leveraging Propagation Delay for Wormhole Detection in Wireless Networks

open access: yesJournal of Cybersecurity Education, Research & Practice
Detecting and mitigating wormhole attacks in wireless networks remains a critical challenge due to their deceptive nature and potential to compromise network integrity.
Harry May, Travis Atkison
doaj  

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