Quantum Theory Illuminates Wormholes –“Observing a Distant Point of the Universe in Four Dimensions”

 

 

Modern concepts of the universe provide for the existence of wormholes—unusual curvatures in space and time. Physicists imagine a wormhole as a black hole through which one can see a distant point of the universe in four dimensions. Astrophysicists are still unable to determine the shape and sizes of black holes precisely, let alone theoretical wormholes. A physicist has now demonstrated that the shape of a wormhole can be calculated based on observable physical characteristics.

In practice, physicists can observe only indirect properties of wormholes, such as red shift—a downward shift in the frequency of gravitational waves in the course of moving away from an object. Roman Konoplya, a research assistant from Moscow’s RUDN Institute of Gravitation and Cosmology, used quantum mechanical and geometrical assumptions and showed that the shape and mass of a wormhole can be calculated based on the red shift value and the range of gravitational waves in high frequencies.

Today, physicists deal with direct tasks: They take the geometry of a compact object, find out its range (the set of frequencies at which a wormhole emits gravitational waves), and then compare the data with experimental results. After that, they decide whether the observed values are similar to theoretically predicted ones. Konoplya suggests a solution of the opposite problem: he managed to determine the shape of an object based on its visible spectrum.

Konoplya took a mathematical model of a spherically symmetrical Morris-Thorne wormhole—a type of black hole that unites two points in space and time and also theoretically provides for movements between them. Then he applied an existing mathematical model to describe the bottleneck of the wormhole—the narrowest place between its entrance and exit. First, he mathematically described how the shape of any symmetrical wormhole can be determined based in its wave range, and solved the so-called opposite problem in general terms. Then, using quantum mechanical approximation, he established an equation to calculate a geometrical shape for a particular case—a wormhole.

“In general terms, a quantum mechanical approach leads to many solutions for the geometry of a wormhole. Our work can be expanded in several ways. First of all, to avoid long formulae, we only considered electromagnetic fields. In our future work we can study other fields under the same approach. Our results may be applied to rotating wormholes as well, provided they are symmetrical enough,” says Konoplya.

The Daily Galaxy via RUDN Institute of Gravitation and Cosmology

Image credit: from Interstellar

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