A new wormhole study published in September on classical gravity and quantum gravity was taken up by New Scientist. This is a study that does not approach the possibility of the existence of space-time tunnels, a deformation of space-time that, according to some universes parallel to ours, could be a transition to other realities.
According to Diandian Wang, a researcher at the University of California at Santa Barbara, wormholes can essentially be divided into two types: those that can only be crossed in one direction and those that can be crossed in both directions. The former are less interesting because anyone who crosses them can never give their testimony and therefore no information can be obtained. The most interesting are the latter. In order to form ourselves, we must go a little beyond classical physics and refer to some concepts of quantum mechanics according to which space-time can change spontaneously, albeit for very short periods of time.
To admit the existence of wormholes, some scientists have turned to string theory. The latter says that there are so many tiny threads that make up the matter of the universe. When one of these fractures occurs, a space-time tunnel can be created with two black holes at each end. However, the “opening” time of such a tunnel would be very short, since the energy resulting from the breaking of the thread separates the two microscopic black holes and the tunnel essentially disappears immediately. But according to Wang, the same space-time curvature can counteract this energy resulting from the breaking of the cord, and black holes can remain stable for an indefinite time.
In any case, this would be a very unlikely scenario, especially if we consider wormholes large enough for a person to pass. But in the scientist’s view, the probability would not be zero.
And such a wormhole could also remain stable for the entire age of the universe over a long period of time and therefore remain open and theoretically traversable.
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