Results 31 to 40 of about 43,733 (300)
Speed Limits in General Relativity [PDF]
, 1998 Some standard results on the initial value problem of general relativity in matter are reviewed. These results are applied first to show that in a well defined sense, finite perturbations in the gravitational field travel no faster than light, and second
Alcubierre M +7 more
core +3 more sources
Warp drive with zero expansion [PDF]
Classical and Quantum Gravity, 2002 8 pages, 3 figures; typos corrected, references ...
openaire +2 more sources
Weak energy condition violation and superluminal travel [PDF]
, 2002 Recent solutions to the Einstein Field Equations involving negative energy densities, i.e., matter violating the weak-energy-condition, have been obtained, namely traversable wormholes, the Alcubierre warp drive and the Krasnikov tube.
A.E. Everett +18 more
core +4 more sources
Newtonian limits of warp drive spacetimes
, 2009 We find a class of warp drive spacetimes possessing Newtonian limits, which we then determine. The same method is used to compute Newtonian limits of the Schwarzschild solution and spatially flat Friedmann-Robertson-Walker cosmological models.Comment: 9 ...
F. Lobo +4 more
core +1 more source
A Superluminal Subway: The Krasnikov Tube [PDF]
, 1997 The ``warp drive'' metric recently presented by Alcubierre has the problem that an observer at the center of the warp bubble is causally separated from the outer edge of the bubble wall.
A. Everett +13 more
core +3 more sources
Quantum Tunneling and Quasinormal Modes in the Spacetime of Alcubierre Warp Drive
, 2017 In a seminal paper, Alcubierre showed that Einstein's theory of general relativity appears to allow a super-luminal motion. In the present study, we use a recent eternal-warp-drive solution found by Alcubierre to study the effect of Hawking radiation ...
Jusufi, Kimet +2 more
core +1 more source
Analyzing warp drive spacetimes with Warp Factory
Classical and Quantum GravityAbstract The field of warp research has been dominated by analytical methods to investigate potential solutions. However, these approaches often favor simple metric forms that facilitate analysis but ultimately limit the range of exploration of novel solutions.
Christopher Helmerich +5 more
openaire +2 more sources
Technical Physics Letters, 2022 The generation of surface water flow in channels with sources and resonators of capillary oscillations is detected and investigated. Moving devices with a capillary-wave accelerator of the surface fluid flow are demonstrated. The surface flow of liquid in the channel is generated due to the local deformation of the liquid surface by capillary ...
openaire +1 more source
Scientific Reports, 2017 Alterations in sodium flux (INa) play an important role in the pathogenesis of cardiac arrhythmias and may also contribute to the development of cardiomyopathies.
Vassilios J. Bezzerides +12 more
doaj +1 more source
Abutting Objects Warp the Three-Dimensional Curvature of Modally Completing Surfaces
i-Perception, 2020 Binocular disparity can give rise to the perception of open surfaces or closed curved surfaces (volumes) that appear to vary smoothly across discrete depths.
Peter U. Tse
doaj +1 more source