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A wormhole is a hypothetical structure which connects disparate points in spacetime. It may be visualized as a tunnel with two ends at separate points in spacetime (i.e., different locations, different points in time, or both). Wormholes are based on a special solution of the Einstein field equations. [1]
Real or not, wormholes can still give scientists crucial insight into our universe.
Negative energy appears in the speculative theory of wormholes, where it is needed to keep the wormhole open. A wormhole directly connects two locations which may be separated arbitrarily far apart in both space and time, and in principle allows near-instantaneous travel between them.
The path integral that computes the entropy receives contributions from novel Euclidean configurations called "replica wormholes". (These wormholes exist in a Wick rotated spacetime and should not be conflated with wormholes in the original spacetime.) The inclusion of these wormhole geometries in the computation prevents the entropy from ...
The key to the whole idea is wormholes—specifically, a type of wormhole called a ring wormhole. Now, wormholes are already entirely theoretical, so this discussion is going to get weird. And ...
Traversable wormholes may be more than science fiction. Three new studies propose new theories for how to construct one. Human-Safe Wormholes Could Exist in the Real World, Studies Find
It does serve as a very useful plot device: when one wants to return to the other end one must close the original wormhole and "redial", which means one needs access to the dialing device. The one-way nature of the Stargates helps to defend the gate from unwanted incursions. [9] Also, Stargates can sustain an artificial wormhole for only 38 ...
Although these may exist in reality, it is not widely held to be true that any such phenomenon could safely transport a human being, [5] as such wormholes would most likely be created by excessive gravity (e.g., from a black hole), which would destroy any potential traveler. [6]