Traversable wormhole magnetic monopoles from Dymnikova metric

Romero, Jesús Martín; Bellini, Mauricio

doi:10.1140/epjp/i2019-12926-1

Cited by 10 publications

(5 citation statements)

References 51 publications

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“…Thus, we will employ here the d-dimensional generalization [32] of the Dymnikova energy density [33]. In four dimensions this model of energy density has give rise to regular black hole solutions, as it was already mentioned in Introduction, as well as to wormhole magnetic monopoles, under the constraints ρ = −p r , studied in reference [40] in a different framework from what is made here.…”

Section: Jcap03(2023)055 4 the New Family Of Wormhole Solutionsmentioning

confidence: 97%

Dymnikova-Schwinger traversable wormholes

Estrada

Muniz

2023

J. Cosmol. Astropart. Phys.

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In this paper, we obtain new d-dimensional and asymptotically flat wormhole solutions by assuming a specific form of the energy density distribution. This is addressed by considering the generalization of the so-called Dymnikova model, originally studied in the context of regular black holes. In this way, we find constraints for the involved parameters, namely, the throat radius, the scale associated to the matter distribution, and the spacetime dimension, to build those wormholes. Following, we study the properties of the obtained solutions, namely, embedding diagrams as well as Weak and Null Energy Conditions (WEC and NEC). We show that the larger the dimension, the larger the flatness of the wormhole and the more pronounced the violation of these energy conditions. We also show that the corresponding fluid behaves as phantom-like for d ≥ 4 in the neighborhood of the wormhole throat. In addition, we specialize the employed model for d = 4 spacetime, associating it with the gravitational analog of the Schwinger effect in a vacuum and correcting the model by introducing a minimal length via Generalized Uncertainty Principle (GUP). Thus, we obtain a novel traversable and asymptotically flat wormhole solution by considering that the minimal length is very tiny. The associated embedding diagram shows us that the presence of this fundamental quantity increases the slope of the wormhole towards its throat compared with the case without it. That correction also attenuates the WEC (and NEC) violations nearby the throat, with the fluid ceasing to be a phantom-type at the Planck scale, unlike the case without the minimal length.

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Section: Jcap03(2023)055 4 the New Family Of Wormhole Solutionsmentioning

confidence: 97%

Dymnikova-Schwinger traversable wormholes

Estrada

Muniz

2023

J. Cosmol. Astropart. Phys.

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“…Thus, we will employ here the d-dimensional generalization [27] of the Dymnikova energy density [28]. In four dimensions this model of energy density has give rise to regular black hole solutions, as it was already mentioned in Introduction, as well as to wormhole magnetic monopoles, under the constraints ρ = −p r , studied in reference [33] in a different framework from what is made here.…”

Section: The New Family Of Wormhole Solutionsmentioning

confidence: 97%

“…5 we depict the embedding diagram profiles of the Dymnikova-Schwinger GUPcorrected wormhole. Replacing into the above equation the expression (33) and integrating it, we obtain the corresponding embedding diagrams, for both α = 0 and α = 0 Dymnikova-Schwinger wormholes. By considering these diagrams, we note that the presence of the minimal length increases the slope of the wormhole, which is more accentuated the greater this length.…”

Section: Dymnikova-schwinger 4d Wormhole and The Influence Of A Minim...mentioning

confidence: 99%

Dymnikova-Schwinger traversable wormholes

Estrada¹,

Muniz²

2023

Preprint

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In this paper, we obtain new d-dimensional and asymptotically flat wormhole solutions with the presence of determined matter fields in the energy-momentum tensor. This is made by generalizing and adjusting to our purposes the so-called Dymnikova model, originally studied in the context of regular black holes. Thus, we find the constraints of the involved parameters to the formation of those wormholes. Following, we study the properties of such solutions, namely, embedding diagrams, Weak and Null Energy Conditions (WEC and NEC), as well as position-dependent state parameters obeying a linear EoS. We show that the larger the dimension, the larger the flatness of the wormhole and the more pronounced the violation of the energy conditions. We also show that the corresponding fluid behaves as phantom-like in all the space for d ≥ 4. Furthermore, we specialize the employed model for d = 4 spacetime, associating it to the gravitational analogue of the Schwinger effect in a vacuum and correcting the model by introducing a fundamental minimal length via Generalized Uncertainty Principle (GUP). Considering a very small minimal length, we obtain a novel traversable and asymptotically flat wormhole solution. The embedding diagram shows that the presence of that length increases the slope of the wormhole towards its throat compared with the case without it. The correction also attenuates the WEC (and NEC) violations nearby the throat, with the fluid ceasing to be a phantom-type at the Planck scale.

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“…Their analysis revealed a duality within the extended Einstein-Maxwell equations, linking electric and magnetic charges across spatial regions that are causally disconnected. [41] focused on examining a traversable wormhole generated through a transformation applied to the 4D Dymnikova metric, which characterizes analytical black holes. The study employed a coordinate transformation method inspired by the Einstein-Rosen bridge to analyze a particular set of geodesics.…”

Section: Wormholes With Monopole Magnetic Fieldsmentioning

confidence: 99%

“…Due to their unique properties, wormholes provide an interesting opportunity to use them as an object that can theoretically generate a monopole magnetic field. And, there are many works linking wormholes with a monopole field [34][35][36][37][38][39][40][41][42].…”

Section: Wormholes With Monopole Magnetic Fieldsmentioning

confidence: 99%

Possible Wormhole Candidates in Active Galactic Nuclei

et al. 2020

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The hypothesis is considered that the active galactic nuclei (AGNs) are wormhole (WH) mouths rather than supermassive black holes (SMBHs). We study the difference in the physical properties of such objects from those of AGNs with SMBH, as well as the the corresponding difference in observational data. Firstly, the radiative efficiency for some types of WHs (both static and rotating) can be significantly larger than the theoretical maximal value for the Kerr SMBHs. A number of AGNs is presented, for which the observational data can be interpreted as the result of the presence of WHs in them. Secondly, a sufficiently strong gamma radiation with a characteristic spectrum noticeably differing from that of AGNs jets, can be emitted from a static WH as a result of a collision of accreting flows of matter inside the WH.

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Traversable wormhole magnetic monopoles from Dymnikova metric

Cited by 10 publications

References 51 publications

Dymnikova-Schwinger traversable wormholes

Dymnikova-Schwinger traversable wormholes

Dymnikova-Schwinger traversable wormholes

Possible Wormhole Candidates in Active Galactic Nuclei

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