Results 21 to 30 of about 28,658 (246)
Generalised Ellis–Bronnikov wormholes in f(R) gravity [PDF]
The European Physical Journal C, 2022 In this manuscript, we construct generalized Ellis–Bronnikov wormholes in the context of f(R) modified theories of gravity. We consider that the matter driving the wormhole satisfies the energy conditions so that it is the effective energy–momentum ...
O. Sokoliuk +3 more
semanticscholar +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
Physical Review D, 2015 8 pages, 8 figure. Published in Phys.Rev.
Ohgami, Takayuki, Sakai, Nobuyuki
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Scalarized Nutty Wormholes [PDF]
Symmetry, 2021 We construct scalarized wormholes with a NUT charge in higher curvature theories. We consider both Einstein-scalar-Gauss-Bonnet and Einstein-scalar-Chern-Simons theories, following Brihaye, Herdeiro and Radu, who recently studied spontaneously scalarised Schwarzschild-NUT solutions.
Rustam Ibadov +3 more
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ASTROPHYSICS OF WORMHOLES [PDF]
International Journal of Modern Physics D, 2007 We consider the hypothesis that some active galactic nuclei and other compact astrophysical objects may be current or former entrances to wormholes (WHs). A broad mass spectrum for astrophysical WHs is possible. We consider various new models of the static WHs including WHs maintained mainly by an electromagnetic field.
Kardashev, N. S. +2 more
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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.
Alexander A. Kirillov +2 more
doaj +1 more source
Traversable wormholes supported by dark matter and monopoles with semiclassical effects
The European Physical Journal C, 2023 We present a new traversable wormhole explication of Einstein’s field equations supported by the profile of Einasto Dark Matter densities (Einasto in Trudy Inst Astrofiz Alma-Ata 51:87, 1965; PTarO 36:414, 1968; Astron Nachr 291:97, 1969) and global ...
F. Rahaman +4 more
semanticscholar +1 more source
Scientific Reports, 2015 AbstractWormholes are fascinating cosmological objects that can connect two distant regions of the universe. Because of their intriguing nature, constructing a wormhole in a lab seems a formidable task. A theoretical proposal by Greenleafet al.presented a strategy to build a wormhole for electromagnetic waves.
Prat Camps, Jordi +2 more
openaire +6 more sources
Static spherically symmetric wormholes in gravity [PDF]
Chinese Physics C, High Energy Physics & Nuclear Physics, 2022 In this study, we obtain wormhole solutions in the recently proposed extension of symmetric teleparallel gravity, known as gravity. Here, the gravitational Lagrangian L is defined by an arbitrary function f of Q and T, where Q is a non-metricity scalar ...
Moreshwar Tayde +3 more
semanticscholar +1 more source
Evolving Lorentzian wormholes [PDF]
Physical Review D, 1996 10 pages( RevTex, Twocolumn format), Two figures available on request from the first author. transmission errors corrected.
Kar, Sayan, Sahdev, Deshdeep
openaire +3 more sources