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Ellis wormhole

WebSep 30, 2024 · Whereas static Ellis wormholes possess an unstable radial mode in both four and higher dimensions [16, 31,32,33,34], the inclusion of rotation might stabilize … WebMay 12, 2024 · Wormholes with Ellis geometry have been successfully constructed using tachyon matter \\cite{Das}. However, for such a wormhole, it is obtained that the redshift function is necessarily a constant, and also the wormhole is plagued with an imaginary tachyon potential and a constant field if the solutions are obtained in the absence of a …

GRAVITATIONAL MICROLENSING BY THE ELLIS …

WebDec 1, 2016 · Here we consider perturbations of the wormhole which was constructed without thin-shells: the Bronnikov-Ellis wormhole supported by the phantom matter and electromagnetic field. This wormhole solution is known to be stable under specific equation of state of the phantom matter. We show that if one does not use the above thin-shell … WebApr 11, 2024 · 3.3 An Ellis–Bronnikov wormhole. An Ellis–Bronnikov wormhole is the solution of Einstein equations with a phantom scalar field [82, 83]. The deflection angle in the Ellis–Bronnikov wormhole spacetime has investigated by Chetouani and Clément and it has been revisited by several authors [63, 85,86,87,88,89,90,91]. bmj best practice erectile dysfunction https://jpmfa.com

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Webare populated by massless Ellis wormholes as conjectured by Abe [25], it is of importance to calculate their observable signatures. In this paper, we shall study the observables for massless dyonic wormhole in the Einstein-Maxwell-dilaton (EMD)theory [27] vis- a-vis those of massless Ellis wormhole of the EMS theory [23]. WebJun 4, 2024 · In this paper, we investigate the simplest wormhole solution - the Ellis-Bronnikov one - in the context of the Asymptotically Safe Gravity (ASG) at the Planck scale. We work with three models, which employ Ricci scalar, Kretschmann scalar, and squared Ricci tensor to improve the field equations by turning the Newton constant into a running … bmj best practice giant cell arteritis

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Ellis wormhole

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The Ellis wormhole is the special case of the Ellis drainhole in which the 'ether' is not flowing and there is no gravity. What remains is a pure traversable wormhole comprising a pair of identical twin, nonflat, three-dimensional regions joined at a two-sphere, the 'throat' of the wormhole. As seen in the image shown, … See more The wormhole metric has the proper-time form $${\displaystyle c^{2}d\tau ^{2}=c^{2}dt^{2}-d\sigma ^{2}\,,}$$ where See more There is a dynamic version of the Ellis wormhole that is a solution of the same field equations that the static Ellis wormhole is a solution of. Its metric is See more The equatorial cross section of the wormhole defined by $${\displaystyle t=0}$$ and $${\displaystyle \vartheta =\pi /2}$$ (representative of all such cross sections) bears the … See more • Scattering by an Ellis wormhole • Spatial lensing (not gravitational lensing, as there is no gravity) in the Ellis wormhole See more WebA massless wormhole called Ellis wormhole was found by Ellis as the simplest wormhole solution of the Einstein equations with a phantom scalar field in 1973 [24] and by …

Ellis wormhole

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WebIn connection to detection, Ohgami & Sakai (2015) have a proposal for a new method by use of the images of the Ellis-type wormholes shadow surrounded by optically thin dust, whereas Dai ... WebJun 25, 2024 · Equation 8: Solution of Eq. 7 for r. where W₀ is the principal branch of the Lambert function.Now in Eq. 6, if we fix the angular variables θ and φ we obtain the line element of flat spacetime ...

WebOct 29, 2024 · We discuss the Casimir effect in a small cavity, moving in a circular orbit around an Ellis wormhole. We show that the interplay between the spacetime geometry … WebDec 30, 2024 · The wormhole solution has two asymptotically flat regions and reduces to the Ellis wormhole when the charge is zero. We draw the embedding diagrams for the …

WebThis paper is devoted to computing the weak deflection angle for the Kalb–Ramond traversable wormhole solution in plasma and dark matter mediums by using the method of Gibbons and Werner. To acquire our results, we evaluate Gaussian optical curvature by utilizing the Gauss–Bonnet theorem in the weak field limits. We also investigate the … WebJun 9, 2024 · In the Ellis wormhole metrics, we study the characteristics of fluid dynamics and the properties of linear sound waves. By implying the energy–momentum equation and the continuity equation in ...

WebA massless wormhole called Ellis wormhole was found by Ellis as the simplest wormhole solution of the Einstein equations with a phantom scalar field in 1973 [24] and by Bronnikov in a scalar-tensor theory in the same year [25]. The Ellis wormhole metric is often referred to as the simplest Morris-Thorne wormhole [26, 27].

WebSep 4, 2014 · We present rotating wormhole solutions in General Relativity, which are supported by a phantom scalar field. These solutions evolve from the static Ellis … cleveland solar companiesWeb2 days ago · The rockets will be built at its 1-million-square-foot factory in Long Beach, called "The Wormhole." Ellis estimated Relativity will be capable of producing upwards of 45 rockets a year from that ... bmj best practice hepatitis cWebSep 3, 2024 · The massless Ellis–Bronnikov wormhole solution refers to an exact solution with zero ADM mass but with a positive “Wheelerian mass” (as introduced by J.A. Wheeler for his geon, see e.g., ) responsible for the gravitational reaction of this wormhole. bmj best practice frozen shoulderWebA recent work by Dey and Sen derived the approximate light deflection angle α by an Ellis wormhole in terms of proper radial distance ℓ that covers the entire spacetime. On the … bmj best practice cksWebOct 4, 2011 · The Ellis wormhole is known to be a massless wormhole, which means that the asymptotic mass at infinity is zero. The Ellis wormhole is expressed by the line … bmj best practice hayfeverWebJun 8, 2015 · We propose a new method of detecting Ellis wormholes by use of the images of wormholes surrounded by optically thin dust. First, we derive steady solutions of dust … cleveland software engineer coursesThe Ellis drainhole is the earliest-known complete mathematical model of a traversable wormhole. It is a static, spherically symmetric solution of the Einstein vacuum field equations augmented by inclusion of a scalar field minimally coupled to the geometry of space-time with coupling polarity opposite to the orthodox polarity (negative instead of positive): clevelands old wife