Results 61 to 70 of about 28,658 (246)
Dissolution Hotspots in Fractures
Geophysical Research Letters, 2021 The injection of reactive fluid into fractured reservoirs is relevant to many subsurface processes. During injection, fracture dissolution forms various patterns.
Ran Hu +5 more
doaj +1 more source
Possible Wormhole Candidates in Active Galactic Nuclei
Universe, 2020 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
Mikhail Piotrovich +3 more
doaj +1 more source
d-dimensional non-asymptotically flat thin-shell wormholes in Einstein-Yang-Mills-Dilaton gravity [PDF]
, 2011 Thin-shell wormholes in Einstein-Yang-Mills-dilaton (EYMD) gravity are considered. We show that a non-asymptotically flat (NAF) black hole solution of the d-dimensional EYMD theory provides stable thin-shell wormholes which are supported entirely by ...
Anchordoqui +36 more
core +3 more sources
Wormholes immersed in rotating matter
Physics Letters B, 2018 We demonstrate that rotating matter sets the throat of an Ellis wormhole into rotation, allowing for wormholes which possess full reflection symmetry with respect to the two asymptotically flat spacetime regions.
Christian Hoffmann +4 more
doaj +1 more source
How much negative energy does a wormhole need?
, 1999 It is known that traversible wormholes require negative energy density. We here argue how much negative energy is needed for wormholes, using a local analysis which does not assume any symmetry.
Daisuke Ida +21 more
core +1 more source
The European Physical Journal C, 2022 In this work we construct traversable wormholes geometries in the framework of the complexity factor. We provide the redshift function of a Casimir traversable wormhole which, in combination with a non-vanishing complexity factor, leads to a traversable ...
R. Avalos, E. Fuenmayor, E. Contreras
semanticscholar +1 more source
Wormhole cosmic censorship [PDF]
General Relativity and Gravitation, 2016 We analyze the properties of a Kerr-like wormhole supported by phantom matter, which is an exact solution of the Einstein-phantom field equations. It is shown that the solution has a naked ring singularity which is unreachable to null geodesics falling freely from the outside.
Matos, Tonatiuh +2 more
openaire +3 more sources
New Scenarios of High-Energy Particle Collisions Near Wormholes
Universe, 2020 We suggest two new scenarios of high-energy particle collisions in the background of a wormhole. In scenario 1, the novelty consists of the fact that the effect does not require two particles coming from different mouths.
Oleg B. Zaslavskii
doaj +1 more source
Classical and quantum wormholes in a flat $\Lambda$-decaying cosmology
, 2008 We study the classical and quantum wormholes for a flat {\it Euclidean} Friedmann-Robertson-Walker metric with a perfect fluid including an ordinary matter source plus a source playing the role of dark energy (decaying cosmological term).
A. Carlini +22 more
core +1 more source