Results 1 to 10 of about 1,153 (117)
Universe, 2021 Wormholes are hypothetical topologically-non-trivial structures of spacetime. From the theoretical point of view, the possibility of their existence is challenging but cannot be ruled out.
Cosimo Bambi, Dejan B Stojković
exaly +3 more sources
Possible Effects of the Fractal Distribution of Relic Wormholes
Universe, 2021 We discuss the possibility that the distribution of relic wormholes may possess fractal properties. Relic wormholes and their fractal distributions are predicted in a natural way by lattice quantum gravity models.
Savelova Elena, Alexander Kirillov
exaly +3 more sources
Effects of Scattering of Radiation on Wormholes
Universe, 2018 Significant progress in the development of observational techniques gives us the hope to directly observe cosmological wormholes. We have collected basic effects produced by the scattering of radiation on wormholes, which can be used in observations ...
Alexander Kirillov
exaly +3 more sources
Yukawa–Casimir Wormholes in f(Q) Gravity
Universe, 2023 Casimir energy is always suggested as a possible source to create a traversable wormhole. It is also used to demonstrate the existence of negative energy, which can be created in a lab. To generalize this idea, Yukawa modification of a Casimir source has
Ambuj Kumar Mishra +2 more
doaj +1 more source
Thin-Shell Wormholes in Einstein and Einstein–Gauss–Bonnet Theories of Gravity
Universe, 2020 We review recent works on the possibility for eternal existence of thin-shell wormholes on Einstein and Einstein–Gauss–Bonnet gravity. We introduce thin-shell wormholes that are categorized into a class of traversable wormhole solutions.
Takafumi Kokubu, Tomohiro Harada
doaj +1 more source
Fitting Type Ia Supernova Data to a Cosmological Model Based on Einstein–Newcomb–De Sitter Space
Universe, 2023 Einstein–Newcomb–de Sitter (ENdS) space is de Sitter’s modification of spherical space used by Einstein in his first cosmological model paper published in 1917. The modification by de Sitter incorporated the topological identification of antipodal points
Vladimir N. Yershov
doaj +1 more source
Ellis wormholes in anti-de Sitter space
European Physical Journal C: Particles and Fields, 2021 We construct traversable wormholes with anti-de Sitter asymptotics supported by a phantom field. These wormholes are massless and symmetric with respect to reflection of the radial coordinate $$\eta \rightarrow - \eta $$ η → - η .
Jose Luis Blázquez-Salcedo +3 more
doaj +1 more source
Fractal nature of acid-etched wormholes and the influence of acid type on wormholes
Petroleum Exploration and Development, 2012 Two-scale (Darcy scale and pore scale) continuum wormholing models are built to study the fractal nature of the acid-etched wormholes in acidizing carbonate reservoirs and the influence of acid type on the conditions for wormholes to form.
Ming LIU, Shicheng ZHANG, Jianye MOU
doaj +1 more source
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