Wormhole

Wormhole

A shortcut through space-time which is also known as Einstein-Rosen Bridge which is a hypothetical topological feature of space-time is known as wormhole. A wormhole is a hypothetical phenomenon and there is no practical definition of existence of a wormhole. In theory, a wormhole is a bridge whose two ends are connected to very distant places and we can switch between the places in almost no time. Sometimes wormhole is also said to be a medium of time travel.
Wormholes have a very strong theoretical ground hence physicists use this as a medium to explain general relativity. The first type of wormhole solution discovered was Schwarzschild wormhole which would be present in Schwarzschild matric describing an eternal black hole.it was found that this type of wormhole would collapse so early after their formation that it is impossible to pass through them. For traversable wormholes to occur, exotic matter with negative energy density is required. Many physicists believe that Casimir effect is the evidence that exotic matter with negative energy occur, though there are no exotic matter observed till now. Quantum foam synthesis suggests that wormholes are formed in large number around us at plank scale, but they disappear immediately.

In 1957, The American theoretical physicist John Archibald Wheeler coined the term wormhole for the first time, though wormhole theory was first proposed by German mathematician Hermann Weyl in 1921.

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