According to a new paper by researchers Roman Buniy and Stephen Hsu, traversable wormholes and time machines cannot be both stable and predictable. Albert Einstein and Nathan Rosen published the first scientific paper on wormholes (also called Einstein-Rosen bridges) in 1935, describing how it might be possible for two distant regions of space-time to be connected through a tunnel-like spatial shortcut.
(I-Newswire) - The basic idea of a wormhole derives from a simple analogy. If the universe is like the skin of an apple ( from a topological viewpoint ), a worm trying to crawl to diametrically opposite points could save time by boring through the apple, rather than staying on the surface. Another version of this kind of analogy uses the idea that you can bring two distant points on a sheet of paper together - by folding the paper.
The resulting "wormhole" consists of two or more "mouths" ( or holes in the surface ) connected to a "throat" which provides the passage.
A traversable wormhole could be used for either travel from one point to another, or from one time to another. Unfortunately, according to the paper, quantum effects are necessary for the construction of stable traversable wormholes. This would cause the wormhole to behave unpredictably; you might not know where ( or when ) you would come out. Wormholes and time machines cannot be both predictable and stable.
"We aren't saying you can't build a wormhole. But the ones you would like to build - the predictable ones where you can say Mr Spock will land in New York at 2pm on this day - those look like they will fall apart," Dr Hsu said. ( From Wormholes no use for space travel ) This is very bad news for science fiction fans. Wormholes have been used by generations of sf writers to enable ships to travel between stars in the time it takes to turn a page. In his 1934 story Xandulu, Jack Williamson writes "I can fold space as readily as you double a sheet of paper. I can reach through hyperspace where distance means nothing."
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