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Traveling through wormholes is possible, but slow



  Wormhole
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A Harvard physicist has shown that wormholes can exist: curved space-time tunnels that connect two remote locations through which one can travel.

But do not pack your bags for a trip to the other side of the galaxy; Although it is theoretically possible, it is not useful for humans to get through, said the author of the study, Daniel Jafferis of Harvard University, written in collaboration with Ping Gao, also by Harvard and Aron Wall of Stanford University.

"It takes longer to get through these wormholes than to go straight, so they are not very useful for space travel," said Jafferis. He will present his findings at the 201

9 American Physical Society April meeting in Denver.

Despite his pessimism for pan-galactic travel, he said that finding a way to construct a wormhole can travel through the light, creating a push in the search for a theory of quantum gravity.

"The real benefit of this work lies in its relationship to the information problem of the black hole and the connections between gravity and quantum mechanics," said Jafferis.

The new theory was inspired when Jafferis began thinking about two black holes involved in a quantum plane, as formulated in the ER = EPR correspondence of Juan Maldacena of the Institute for Advanced Study and Lenny Susskind of Stanford. Although this means that the direct connection between the black holes is shorter than the wormhole junction – and therefore the wormhole path is not a shortcut – the theory provides new insights into quantum mechanics.

"Viewed from the outside, the barrel is through the wormhole. This corresponds to a quantum teleportation with crossed black holes," said Jafferis.

Jafferis was based on his theory, which was designed in 1935 by Einstein and Rosen and consisted of a connection between two black holes (the term wormhole was coined in 1957). Because the wormhole can be traversed, Jafferis said, this was a special case where information could be extracted from a black hole.

"There is a causal exploration of regions that would otherwise have been beyond a horizon, a window to the experience of an observer within an externally accessible space-time," said Jafferis.

To date, a major stumbling block in the formulation of traversable wormholes has been the need for negative energy that seemed incompatible with quantum gravity. However, Jafferis has overcome this with quantum field theory tools to compute quantum effects similar to the Casimir effect.

"I think it will give us in-depth insights into the correlation between gauge / gravity, quantum gravity and even a new way to formulate quantum mechanics," said Jafferis.


Scientists reject the idea of ​​traveling through wormholes


Further information:
The "Tangible Wormholes" presentation will take place on Saturday, April 13, at 11:21 am (MT) in the Plaza D room of the Sheraton Denver Downtown Hotel. Summary: meetings.aps.org/Meeting/APR19/Session/B02.2

Provided by
American Institute of Physics




Quote :
Travel through wormholes is possible, but slow (2019, April 15)
retrieved on April 15, 2019
from https://phys.org/news/2019-04-wormholes.html

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