The reality of travel to the past and the future is confirmed by the formulas.
Time travel is possible - at least mathematically. So says the Canadian Ben Tippett (Ben Tippett) - teacher of mathematics and physics at the University of British Columbia (University of British Columbia). Together with his American colleague David Tsang from the University of Maryland, they essentially created a time machine. Created, of course, on paper - in the form of a mathematical model. But the formulas that formed its basis seem to prove that this machine is quite efficient. That is, it must move the daredevil who has climbed inside both into the past and into the future. Optional. Like a time machine in its first "inventor" - HG Wells.
Ben Tippett himself.
TARDIS (Traversable Acausal Retrograde Domain in Space-time) - this is how scientists called their "invention", which was described on the website of the University of British Columbia. They told with a big notice back in April 2017. This year, the Canadian-American time machine suddenly "surfaced" - for some reason it is gaining popularity on the Internet again, although scientists have not added anything new for the year. But they also did not refute their conclusions.
Tippett and Tsang assured and assure that their "mathematics" is in full accordance with the General theory of relativity of Albert Einstein - first of all with his seemingly insane idea that space-time can bend under the influence of gravitational fields. Scientists believe that they - these fields - just arise as a result of certain distortions. They say that curved space-time is what makes the planets move in circular or elliptical orbits. Otherwise they would fly in a straight line.
Formulas from among those that substantiate the reality of a time machine.
Recently, physicists from a large international team (LIGO Scientific Collaboration) have captured gravitational waves that shake and twist space-time, for example, when black holes - objects of monstrous weight collide or merge. Thus, it was possible to confirm that Einstein was right about the curvatures. That is, they really do exist.
Justifying the possibility of time travel, Tippett and Tsang explain: time is not some kind of separate - the fourth - dimension. It seems to be woven into the three spatial dimensions of our three-dimensional world. Therefore, it - time - can also be twisted. Curve along with space. This is the whole point of "invention".
Promotional video:
Wells' determined followers believe that time can be twisted very much - so that it bends into a bagel. That is, its movement will become closed. Which will allow you to return to the past. Or rush into the future, heading the other way. At the same time, the traveler will be in a kind of bubble that separates him from the surrounding space-time.
Fiction? Not at all. At least for theorists specializing in mathematical physics. They have long ago acquired terms to denote such mind-blowing absurdities: "closed timelike line", "closed timelike curve" … Back in 1949, the Austrian philosopher of mathematics Kurt Gödel, having obtained exact solutions of Einstein's equations, declared that these lines-curves could really exist.
The diagram by which scientists have illustrated the principle of moving to the past and back to the future.
Tippett and Tsang admit that their "invention" is theoretical. They say, while it would be naive even to dream of a real time machine - a kind of device that you could climb into today, and get out at least the day before yesterday. After all, in order to create something like that, it turns out that some exotic substance is needed - energy with the so-called negative density. Nobody knows where to get it, how to use it. Although it would be rash to say that this does not exist in nature. The sought-for substance seems to exist not only hypothetically. For example, in the form of the so-called dark energy, under the influence of which our Universe is expanding rapidly. And it should not, if only gravitational forces acted in space-time.
By the way, among the skeptics - scientists who do not believe in a time machine at all, even in a theoretical one - was the recently deceased Stephen Hawking. He believed that no timelike curve would ever close - it would always be hindered by some insurmountable obstacle. From sin, as they say.
Real time travel is, in principle, impossible due to the so-called "chronological censorship", which will not allow the traveler to violate the "principle of causality" - for example, to travel back in time and kill his grandfather.
There is no doubt: the ideas of Tippett and Tsang seem crazy. But from a scientific point of view, it is difficult to find fault with them. The article of scientists was published in the serious scientific journal Classical and Quantum Gravity. The authoritative scientific portal Phys.org told about their research. The news was picked up by many Western media outlets. The Russian segment of the Internet is now connected.
“The exploration of space-time is fascinating,” explains Ben Tippett. - And physics and mathematics make it especially exciting.
Through the years … Perhaps someday he will learn. Although it is doubtful: no one from the future has come to us yet.
VLADIMIR LAGOVSKY
