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If two points are connected by a wormhole whose length is shorter than the distance between them outside the wormhole, the time taken to traverse it could be less than the time it would take a light beam to make the journey if it took a path through the space outside the wormhole. However, a light beam traveling through the same wormhole would ...
The Ellis drainhole is the earliest-known complete mathematical model of a traversable wormhole.It is a static, spherically symmetric solution of the Einstein vacuum field equations augmented by inclusion of a scalar field minimally coupled to the geometry of space-time with coupling polarity opposite to the orthodox polarity (negative instead of positive):
If one goes further and sets to 0, the metric becomes that of Minkowski space-time, the flat space-time of the special theory of relativity. In Minkowski space-time every timelike and every lightlike (null) geodesic is a straight 'world line' that projects onto a straight-line geodesic of an equatorial cross section of a time slice of constant ...
The gravity well at the center of these objects is so intense that scientists have often theorized they could act as tunnels to another universe, or another time. But ring wormholes aren’t black ...
Other proposals that allow for backwards time travel but prevent time paradoxes, such as the Novikov self-consistency principle, which would ensure the timeline stays consistent, or the idea that a time traveler is taken to a parallel universe while their original timeline remains intact, do not qualify as "chronology protection".
Nathan Rosen (Hebrew: נתן רוזן; March 22, 1909 – December 18, 1995) was an American and Israeli physicist noted for his study on the structure of the hydrogen molecule and his collaboration with Albert Einstein and Boris Podolsky on entangled wave functions and the EPR paradox.
Dowker attended Manchester High School for Girls. [9] As a student, she was interested in wormholes and quantum cosmology.Having studied the Mathematical Tripos at the University of Cambridge, Dowker was awarded the Tyson Medal in 1987 and completed her Doctor of Philosophy for research on spacetime wormholes supervised by Stephen Hawking [2] [3] in 1990.
While working on mathematical extensions to Einstein's general relativity in 1957, Wheeler introduced the concept and word wormhole to describe hypothetical "tunnels" in space-time. Bohr asked whether they were stable and further research by Wheeler determined that they are not.