Mathematicians confirm the possibility of data transfer via gravitational waves | 10/11/2018 | Staff
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RUDN mathematicians analyzed the properties of gravitational waves in a generalized affine-metrical space (an algebraic construction operating on the notions of a vector and a point) similarly to the properties of electromagnetic waves in Minkowski space-time. They report the possibility of transmitting information with the help of nonmetricity waves and transferring it spatially without distortions. The discovery could lead to a new means of data transfer in space, e.g., between space stations. Their results are published in Classical and Quantum Gravity.

Gravitational waves are waves of curvature in space-time, which, according to General Relativity, are completely determined by space-time itself. Currently, there are reasons to consider space-time as a more complex structure with additional geometrical characteristics such as torsion and nonmetricity. In this case, geometrically speaking, space-time turns from a Riemannian space envisaged by the General Relativity (GR) into a generalized affine—metrical space. Respective gravitational field equations that generalize Einstein's equations show that torsion and nonmetricity can also spread in the form of waves—in particular, plane waves at a great distance from wave sources.

Order - Waves - RUDN - Researchers - Abstraction—an

In order to describe gravitational waves, RUDN researchers used mathematical abstraction—an affine space, i.e., a usual vector space but without an origin of coordinates. They proved that in such a mathematical representation of gravitational waves, there are functions that remain invariable in the process of wave distribution. It is possible to set an arbitrary function to encode any information in approximately same way that electromagnetic waves transfer a radio signal.

If scientists can develop a method to incorporate these constructions in a wave source, they could reach any point in space without change. Thus, gravitational waves...
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