He time travel without paradoxes is theoretically and logically possible, according to the mathematical model of an advantageous undergraduate student of the University of Queensland, in Australia.

The fourth-year student of the Degree in Advanced Science (With honors) Germain Tobar has been investigating the possibility of time travel, under the supervision of the university physicist Dr. Fabio Costa.

“The classical dynamics It says that if you know the state of a system at a particular time, this can tell us the whole story of the system, “Tobar said.

“This has a wide range of applications, from allowing us to send rockets to other planets and to model how fluids flow. For example, if I know the current position and velocity of an object falling under the force of gravity, I can calculate where it will be. anytime.

“However, the Einstein’s theory of general relativity predicts the existence of time loops or time travel, where an event can be both in the past and in the future of itself, theoretically changing the study of dynamics, “he stressed in a statement.

“An event can be both in the past and in the future of itself”

Tobar said that a unified theory that it could reconcile both traditional dynamics and Einstein’s Theory of Relativity was the holy grail of physics. “But current science says that both theories cannot be true,” he said.

“As physicists, we want to understand the most basic underlying laws of the Universe and for years I have wondered how the science of dynamics can square with Einstein’s predictions. I wondered: Is it mathematically possible to travel in time?

Tobar and Dr. Costa say they have found a way to ‘square the numbers‘and Dr Costa said the calculations could have fascinating consequences for science.

“The math is substantiated, and the results are science fiction stuff. Let’s say you traveled back in time, in an attempt to prevent patient zero from COVID-19 you are exposed to the virus. However, if you prevented that person from becoming infected, that would remove the motivation to go back and stop the pandemic in the first place, “says Costa.

“This is a paradox, an inconsistency that often leads people to think that time travel cannot occur in our universe. Some physicists say it is possible, but logically it is difficult to accept because that would affect our freedom to perform. Any arbitrary action. It would mean that you can travel in time, but you can’t do anything that causes a paradox, “he adds.

However, the researchers say their work shows that neither of these conditions have to be the case, and it is possible that the events adjust themselves to be logically consistent with whatever action the time traveler takes.

“In the example of patient zero with coronavirus, you could try to prevent patient zero from getting infected, but by doing so, you will either contract the virus and become patient zero, or someone else will,” Tobar said.

“No matter what you did, the major events would simply recalibrate around you. This would mean that regardless of your actions, the pandemic would occur, giving your younger self the motivation to go back and stop it. For more that tries to create a paradox, the events will always adjust themselves, to avoid any inconsistencies, “he said.

Thus, “the range of mathematical processes that we discovered shows that time travel with free will is logically possible in our universe without any paradox.”

The research is published in Classical and Quantum Gravity