![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png){kind=small}
Teleportation Physics Study
AIR FORCE RESEARCH LABORATORY
AIR FORCE MATERIEL COMMAND
EDWARDS AIR FORCE BASE CA 93524-7048
APPROVED FOR PUBLIC RELEASE; DISTRIBUTION UNLIMITED.
A stargate is essentially a wormhole with a flat-face shape for the throat as opposed to the spherical-shaped throat of the Morris and Thorne (1988) traversable wormhole, which was derived from a spherically symmetric Lorentzian spacetime metric that prescribes the wormhole geometry (see also, Visser, 1995 for a complete review of traversable Lorentzian wormholes).
The flat-face traversable wormhole solution is derived from the thin shell (a.k.a. junction condition or surface layer) formalism of the Einstein equations (Visser, 1989; see also, Misner, Thorne and Wheeler, 1973). We adapt Visser’s (1989) development in the following discussion. The procedure is to take two copies of flat Minkowski space and remove from each identical regions of the form Ω × R, where Ω is a three-dimensional compact spacelike hypersurface and R is a timelike straight line (time axis). The resulting spacetime is geodesically complete and possesses two asymptotically flat regions connected by a wormhole. The throat of the wormhole is just the junction ∂Ω (a two-dimensional space-like hypersurface) at which the two original Minkowski spaces are identified.
Equations (2.10a-c) imply that (for ∂Ω convex) we are dealing with negative surface energy density and negative surface tensions. This result is in fact the primary matterenergy requirement for traversable wormholes, as was proved by Morris and Thorne (1988), and later by Visser (1995), within the paradigm of classical Einstein general relativity. The negative surface tension (= positive outward pressure, a.k.a. gravitational repulsion or antigravity) is needed to keep the throat open and stable against collapse. The reader should not be alarmed at this result. Negative energies and negative stress-tensions are an acceptable result both mathematically and physically, and they manifest gravitational repulsion (antigravity!) in and around the wormhole throat.
Вообще статья очень интересная. И главное, насколько хватает моих познаний в физике, всё вроде правильно. Кто-нибудь из специалистов может прокомментировать?
и заодно учим английского языка: Vacua: A plural of vacuum.
AIR FORCE RESEARCH LABORATORY
AIR FORCE MATERIEL COMMAND
EDWARDS AIR FORCE BASE CA 93524-7048
APPROVED FOR PUBLIC RELEASE; DISTRIBUTION UNLIMITED.
A stargate is essentially a wormhole with a flat-face shape for the throat as opposed to the spherical-shaped throat of the Morris and Thorne (1988) traversable wormhole, which was derived from a spherically symmetric Lorentzian spacetime metric that prescribes the wormhole geometry (see also, Visser, 1995 for a complete review of traversable Lorentzian wormholes).
The flat-face traversable wormhole solution is derived from the thin shell (a.k.a. junction condition or surface layer) formalism of the Einstein equations (Visser, 1989; see also, Misner, Thorne and Wheeler, 1973). We adapt Visser’s (1989) development in the following discussion. The procedure is to take two copies of flat Minkowski space and remove from each identical regions of the form Ω × R, where Ω is a three-dimensional compact spacelike hypersurface and R is a timelike straight line (time axis). The resulting spacetime is geodesically complete and possesses two asymptotically flat regions connected by a wormhole. The throat of the wormhole is just the junction ∂Ω (a two-dimensional space-like hypersurface) at which the two original Minkowski spaces are identified.
Equations (2.10a-c) imply that (for ∂Ω convex) we are dealing with negative surface energy density and negative surface tensions. This result is in fact the primary matterenergy requirement for traversable wormholes, as was proved by Morris and Thorne (1988), and later by Visser (1995), within the paradigm of classical Einstein general relativity. The negative surface tension (= positive outward pressure, a.k.a. gravitational repulsion or antigravity) is needed to keep the throat open and stable against collapse. The reader should not be alarmed at this result. Negative energies and negative stress-tensions are an acceptable result both mathematically and physically, and they manifest gravitational repulsion (antigravity!) in and around the wormhole throat.
Вообще статья очень интересная. И главное, насколько хватает моих познаний в физике, всё вроде правильно. Кто-нибудь из специалистов может прокомментировать?
и заодно учим английского языка: Vacua: A plural of vacuum.