Time travel is possible, a new study proves

The idea of traveling through time - as we know from "Doctor Who" and many science fiction movies, is irresistibly attractive, but always remained in fantasy. A new study, however, published in the scientific journal "Classical and Quantum Gravity," once again he stressed that it is possible, at least from a mathematical point of view.
"In this article - the authors wrote - present geometry, which is designed to match the laic description of the item. Pomegranate." Time Machine ". This is a box that allows its people to move back and forth in time and space, interpreted by an external observer. "
This article describes the mathematical TARDIS .
It certainly sounds like a time machine - and fans of "Doctor Who" will notice that the title of the study is an acronym: " Traversable acausal retrograde domains in spacetime " = TARDIS, machine Lord of the time.
So what offer both mathematicians, Benjamin Tippett and David Tsang?
As is known, time machines must be able to warp the very fabric of space-time. In this sense, it is best to think of spacetime as a unifying point for the three physical dimensions (width, height, depth) plus the time.
The time for us go forward thanks to an oddity in the second law of thermodynamics. However, "bending" of space-time has some curious manifestations associated with time. If you put on it subject to huge mass is formed large gravity well and the weather significantly slowed within this well.
Yet time continues to move forward. Not turn back. To do this, you must call to help a little of the theories of special and general relativity.
Imagine that you are in a box similar to the TARDIS and want to go back in time. Outside this box has a clock that still measures the time ahead - this will be our "frame of reference" - something against which to measure our journey in time and space.
Now, if continuously accelerate time still seems normal inside the box, but the outside will start to happen something strange. Since the time that the light coming from the clock reaches your eyes will have to travel more to get there, the length of each second will increase for you, but not to watch.
Time it slows down, but from your perspective, it seems that it is speeding up the clock, which is outside the TARDIS. So you grow old more slowly, and when you stop the movement of the TARDIS it looks like weather outside has moved considerably - have arrived in future. It's time dilation described by special relativity.
The new study adds an element of general relativity. Moving faster than light space-time "bubble" in a circle will eventually catch up with its own "time machine." When Time Machine meets this before, that is in the past, you can see the past and future simultaneously and choose at what point to stop and get off.
All this is quite possible - in the field of mathematics. And in the movies.

source https://pixabay.com