real possibility or just science fiction?

Who has not wanted to go back in time to revive or repair something? What if the famous time machine mentioned so many times in science fiction movies existed? Would the rules of not changing the past also apply in this reality? There are many questions with only one certainty, the concept of time travel is fascinating and caught the attention of physicist Barak Shoshany, who may have discovered a flaw in the theory that would make the experiment possible.

According to the theory of the theoretical physicist Albert Einstein, it combines space and time into a single entity; “space-time”, both systems work, albeit in an extraordinarily complex way. According to information from Phys.orgthe theory has been around for over 100 years and has been verified with one of the highest accuracies ever reported in such tests, so physicists believe that the basis is an accurate description of the idea in our universe.

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Moreover, according to our modern understanding of time and causality, i.e. the general theory of relativity, time travel would be fully possible while being compatible and consistent with the theory of relativity. However, physics and mathematics can be different, and the equations are ultimately meaningless if they are not based on calculations that are married to reality.

Time travel: real possibility or just science fiction? Photo: / Alexei Godzenko

Time travel: is it possible or not?

Thus, there are two arguments that point to the fact that these equations are in fact unreal, which undermines the idea of ​​possibility implanted by Einstein. The first question is practical, ie. building a time machine would require negative energy from exotic materials, and in our current reality we have only positive energy. Even with quantum mechanics indicating the possibility of creating exotic matter, the quantities would be small, still insufficient for a project of such magnitude.

The second point that contradicts time travel is more significant and complex, as it addresses the complexity of the paradoxes of such an experience. There are several types of paradoxes, but the most problematic are the contextual paradoxes, which are precisely the dilemma of changing the past, when that change in itself prevents that event from happening in the first place.

Example: if I go back in time and destroy the time machine, today it would be impossible to use it to go back in time, so if I can not use the machine, I can not stop traveling in the past, if I travel not in the past, the machine remains intact. In other words, the time machine is destroyed if, and only if, it is not destroyed – it is almost a loop in the mind, but it makes sense, which makes it a paradox.

In contrast, the rule of not changing the past or making contact with your past or future self would solve the idea of ​​creating the paradox. By refuting the idea of ​​a minimal production of exotic materials, nothing also proves that it is impossible to create the product in sufficient quantity. Moreover, new equations can be discovered, and ultimately all of this is a limitation of our current technology.

1652389347 877 Time travel real opportunity or simple science fiction
Time travel: real possibility or simple science fiction ?. Image: / StunningArt

Time travel in the multiverse concept

What really contradicts this last argument is that in physics, a paradox is not an event that can actually happen – it is a purely theoretical concept that points to an inconsistency in the theory itself. In other words, the context paradoxes imply that time travel cannot happen because they just do not exist, since everything is theory.

Against this background, the theoretical physicist Stephen Hawking formulated his chronological presumption of protection, which states that time travel should be impossible. On the other hand, the theoretical physicist Igor Dmitriyevich Novikov has developed a study of self-consistency, which says that you can travel to the past, but you can not change it.

In general, according to a report from Physical, there is and not the possibility of time travel. According to calculations by Barak Shoshany, a physicist who has devoted his last three years to the subject, parallel timelines with different stories would solve the paradox – something along the lines of the multiverse.

“I became more and more convinced that time travel could be possible, but only if our universe allows more stories to exist side by side. So how do you feel? Quantum mechanics certainly seems to suggest this, at least if you agree. “Everett’s” many worlds “interpretation, where a story can be” divided “into several stories, one for each possible measurement result. But that is only speculation,” the physicist explained.

“Time travel and parallel timelines are almost always connected in science fiction, but now we have proof that they must also go together in real science. General theory of relativity and quantum mechanics tell us that time travel may be possible, but if so, more stories must also be possible.

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