Reply to “Comment on ‘Observing a wormhole”’

Dai, De-Chang; Stojković, Dejan

doi:10.1103/physrevd.101.068302

Cited by 5 publications

(4 citation statements)

References 7 publications

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“…We now place a perturber on the other side of the wormhole and a test object (or an observer) on our side. By deriving the gravitational perturbations on this background, we can show [59,60] that an observer on our side will feel an additional (anomalous) acceleration due to perturbations sourced on the other side…”

Section: Orbiting Starsmentioning

confidence: 99%

Astrophysical Wormholes

Bambi

Stojković

2021

Universe

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Section: Orbiting Starsmentioning

confidence: 99%

Astrophysical Wormholes

Bambi

Stojković

2021

Universe

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“…As we noted above, for l = 0, (15) reduces to the doubledelta-function potential (17). We can easily compute the transfer matrix of this potential using the formula (33) for the transfer matrix of the single-delta-function potential (30) and the composition rule (25). This yields…”

Section: Potential Scattering and Its Dynamical Formulationmentioning

confidence: 99%

“…[21,22] suggest using the gravitational lensing effects for probing wormholes, while Refs. [23][24][25][26] study the effects of the gravitational pull a e-mail: b.azad@alumni.iut.ac.ir b e-mail: loran@iut.ac.ir c e-mail: amostafazadeh@ku.edu.tr (corresponding author) of the objects residing in the vicinity of one of the mouths of a wormhole on the trajectory of objects hovering around the other mouth. These studies together with the spectroscopic techniques [27] should, in principle, offer useful methods to decide whether a given celestial body is a traversable wormhole [28].…”

Section: Introductionmentioning

confidence: 99%

Transmission of low-energy scalar waves through a traversable wormhole

2020

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We study the scattering of low-energy massless and massive minimally coupled scalar fields by an asymptotically flat traversable wormhole. We provide a comprehensive treatment of this problem offering analytic expressions for the transmission and reflection amplitudes of the corresponding effective potential and the absorption cross section of the wormhole. Our results, which are based on a recently developed dynamical formulation of time-independent scattering theory, apply to a large class of wormhole spacetimes including a wormhole with a sharp transition, the Ellis wormhole, and a family of its generalizations.

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“…In this paper, we use a simple model of wormhole space-time: two copies of the regular space-time with asymptotically Minkowski core [48] smoothly connected through a short-throat wormhole [49][50][51][52][53] whose radius of mouth is equal to or larger than the event horizon radius R of an extremal regular black hole with asymptotically Minkowski core. We also assume that there is enough exotic matter near the throat of the wormhole to make it open and stable.…”

Section: Introductionmentioning

confidence: 99%

Method of distinguishing between black holes and wormholes

Hong,

Tao,

Zhang

2021

Preprint

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Beginning with a brief review of the regular space-time with asymptotically Minkowski core, we can consider two copies of the space-time connected through a short-throat wormhole whose radius of mouth is equal to or larger than an extremal regular black hole with asymptotically Minkowski core's event horizon radius. If the wormhole is traversable and smooth, fluxes in these two spacetimes will interact with and flow into each other. On the cosmological scale, gravity is a candidate for the flux. As the gravitational field changes in one space-time, the behaviours of stars around the wormhole will be affected by the other space-time since we assume there exists enough exotic matter to keep the wormhole open. The changes in a gravitational field can be quantized through the gauge invariant perturbations. The variances in orbits of stars can be reflected by changes in the kinematic shifts of photon frequencies. Then, we use this to distinguish between the black hole and wormhole generated by the same space-time line element, since black hole can not connect two space-times and is unaffected by other space-time.

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Reply to “Comment on ‘Observing a wormhole”’

Cited by 5 publications

References 7 publications

Astrophysical Wormholes

Astrophysical Wormholes

Transmission of low-energy scalar waves through a traversable wormhole

Method of distinguishing between black holes and wormholes

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