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Proof has been found that time travel is possible - but you will not be able to travel and stop the corona

A math student claims to have been able to prove the physical feasibility of a particular type of time travel - but contrary to what many fear, changes made in the past will not affect the present occurrences from which we came

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• time travel

• Corona

• Theory of relativity

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Monday, 05 October 2020, 23:48

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Trailer for the movie "Back to the Future" (BACK TO THE FUTERE)

No one has yet been able to travel in time - at least to the best of our knowledge - but the question of whether such an achievement is possible at least from theoretical understanding continues to fascinate researchers around the world.

As many films like "Lethal Mission" and "Back to the Future" show, time travel causes problems in some of the basic rules of the universe: If you go back in time and prevent your parents from meeting, for example, how does that explain why you exist in the present to go back in time in the first place?

Now, a physics student claims to have been able to mathematically prove the physical feasibility of a particular type of time travel without creating such a paradox in a new study published in the magazine "Classical and Quantum Gravity".

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We told you that people traveled in time - is time travel at all possible?

To the full article

Jermaine Tubar and Fabio Costa claim we can go back in time without creating a paradox (official website, Ho Vu)

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Jermaine Tubar, a student at the University of Queensland, worked with physics professor Fabio Costa, on this paper.

Tubar and Costa claim to have found a mathematical way that solves a central logical paradox in one model of time travel.

Mathematics itself is complex, but it comes down to something quite simple (roughly) - a discussion of time travel focuses on, among other things, closed time-shaped curves (CTC) that allow one to critique the past without violating Albert Einstein's relativity laws and influencing the future, Classical dynamics say that if you know the state of the system at a particular time, it can tell us its entire history.However - Einstein's general relativity predicts the existence of time loops or time travel - an event can occur in both his past and future - which is theoretically Turns the study of dynamics on its head. "

Tubar and Costa argue that as long as two parts of an entire scenario within the CTC are still in "causal order" when you leave, the rest is subject to local free will.

The calculations show that time space can adjust itself to avoid paradoxes.

"Our results show that CTCs are not only compatible with determinism and local 'free choice' of actions, but also with a rich and wide range of dynamic scenarios and processes," the article concludes, and we are sure you all understand.

In a university statement, Costa illustrates science by analogy: "Suppose you traveled in time, trying to prevent a zero patient from being exposed to the coronavirus. People sometimes think that time travel cannot occur in our universe. It is difficult to accept this logically because it will affect our freedom to perform any arbitrary action. This means that you can travel in time, but you can not do anything that will cause a paradox to occur. One way or another, the virus will spread "The paradox. No matter what the time traveler does, the virus will not stop."

Even if you try - you will not be able to change the present, but at least you will be able to visit your great-grandfather

Some of the results of time travel are grouped as the "butterfly effect," which refers to large unintentional changes that result from small actions.

However, the real truth, in terms of mathematical results, is more similar to another classic example: the monkey's spoon, a story about the monkey's spoon used as an object that gives 3 wishes that go against those who express them - told to convey a message about the feasibility of not interfering in fate.

Tubar explains in a statement: "In the example of the first corona patient, you could try to prevent the first patient from getting infected, but then you would snatch the virus yourself and become the first patient, or it would happen to someone else. No matter what you did, the notable events would just reorient around you. If you put in the effort to create a paradox, the events will always adapt to avoid inconsistencies. "

Such a line would be very frustrating for the person who would try to prevent a plague or kill Hitler, however for mathematicians feasibility helps to solve a hypothesis that time travel is only possible if passengers are limited in their actions to avoid creating a paradox.

At the very least, this research suggests that anyone who eventually plans to travel in time will be able to do so and experiment without the underlying fear that it will affect the future or destroy the world - at least not immediately.

Although the numbers may work out, the time machines that scientists have developed so far only exist on paper.

Maybe we will get there one day - Stephen Hawking certainly thought it was possible - and if we do, the new study claims we will be free to do whatever we wanted in the past and it will already re-adapt itself to present events.

"Try as hard as you can to create a paradox, events will always adapt to avoid inconsistencies," Costa concluded, "the variety of mathematical processes we have discovered shows that time travel with logically free will is possible in our universe without any paradox."

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