Could we build space -time computers running on gravity?

A math test for the nature of space-time-making of physical reity-can be the first step towards new computer-like devices that process information using gravity.

Is space-time an unchanging expansion, or can it be crooked in ways that affect a signal that runs through it? According to Albert Einstein’s theory of special relativity, it is static – but his theory of general relativity reveals something completely different. In this frame, massive objects make room time dimple and baskets, such as when a ball falls on a tight sheet, which cream changes the path to a signal moving nearby.

Elefttherios-emis tselenis at Brussels Polytechnic School in Belgium and Ämin Baumeler at the University of Lugano in Switzerland has now developed a mathematical test for whther-room time in a given region is Acharder or not.

They analyzed a scenario where three or more people exchange information by sending each other message. They asked where it is possible to tell if one of the people named Alice, Bob and Charlie-Kunne change the way that travels by expelling space time. Could Alice receive a message intended for Bob because the area of ​​space time that the signal was traveling through was distorted? Could she turn the causality of Charlie and Bob-So that Bob may have received a response from Charlie before she even messed up him to mess with space time near her?

Tselenis and Baumeler derived an equation that could help Alice, Bob and Charlie know when these situations are possible. After several rounds of sending messages to each other, they were able to merge who got what message when, then connect this data into the equation.

The result would re -revel whether they had been communication in a setting where space -time manipulation was an option. This mathematical framework was general enough that the treble clover would have had to know something about where they are in the room they are or use any non-standard messaging devices.

Baumeler says that general relativity was understood as a successful description of our physical reality for decades, but we still lacked a strict mathematical connection between changing space time and the flow of information. Understanding of information stream and related concepts forms the basis of computer science.

In this sense, he says, his team’s work may be a very early step towards using gravitational effects-moving masses around and distorting space time for calculation.

“If we want to use the mysteries in physics to perform computing, why not try general relativity?” Says Pablo Arright at Paris-Saclay University in France. He says other scientists have considered extreme ideas such as throwing a computer into a black hole, so the skew of space time near the edge of the black hole will have time to slow down and enable otherwise impossible long calculations to conclude.

But the new theory stands out because it does not focus on any special units or theories of space, which means it could be used for a wide rage of situations, says ArriThti. Building has the “Gravity Information” unit, however, currently seems unpritical, he says.

Tselenis and Baumeler also say that much more work is needed before they can design a practical device. The calculations in their recent work depend on amazing situations – Picture Alice moves a whole planet to sit between Charlie and Bob, for example. In order for their ideas to find practical use, they need to better understand the effect of gravity in much smaller scales.

Gravity produces notorious weak signals for items that are extremely massive, which is that you never have the effect of space-time distortion, says a pencil on your desk. Still, some devices such as watches made of extremely cold atoms can detect these effects. Future development of such units – combined with progress in theories that connect gravity and information – could lead to more practical uses of the mathematical work of Tselenis and Baumeler.

Their research could elucidate the links between the ways, such as different paradigms – information theory and special relativity – deals with causal links, says V. Vilasini at the University of Grenoble Alpes in France. Becuse The new work engages in ideas such as invertering the order of events, it raises questions about seeming basic concepts as an event – for example, Alice by pressing a button to send a message – is actually, she says.

In her view, the next step is to integrate the researchers’ approach more fully with the theory of general relativity, as Alf for further studies of the nature of space time.

“Could astrophysical phenomena such as mergers of black hole producing gravitational waves that reach the Earth hold physically meaningful signatures of the type of correlations that have been examined in this work, and could this allow us to study, how was Varp space time?” She asks.