Time travel is mathematically possible: surprising findings from new research

Scientists from Australia claim to have proven the theoretical possibility of time travel when solving a logical paradox. Writes about it Independent.

Photo: Shutterstock

Physicists at the University of Queensland used mathematical modeling to reconcile Einstein's theory of general relativity with classical dynamics. The clash between these two systems is at the heart of the lack of time travel known as the grandfather paradox.

Einstein's theory allows for the possibility for a person using a time loop to travel back in time to kill their grandfather. However, classical dynamics dictate that the sequence of events after the death of the grandfather would result in the time traveler not existing at all.

“As physicists, we want to understand the most basic, underlying laws of the Universe. For years, I puzzled over how the science of dynamics could fit with Einstein's predictions,” said Germain Thaubar, one of the study's leaders. “Is time travel mathematically possible?”

For their calculations, Tobar and Dr. Costa used the COVID-19 pandemic as a model to find out whether the two theories could coexist. They introduced a time traveler trying to return and prevent COVID-19 patient zero infection.

On the subject: 'Butterfly Effect': Scientists Find Out How Time Travel Affects History

Einstein's theory allows time travel, but the science of dynamics means that the fundamental sequence of events cannot be broken.

This is because if the time traveler manages to prevent the spread of the virus, it will relieve him of his initial motivation to travel in time.

“In the coronavirus patient zero example, you can try to stop patient zero from getting infected, but in doing so you will become infected with the virus and become patient zero yourself or someone else,” Tobar said.

“No matter what you do, important events around you will simply rearrange themselves. This would mean that - no matter what you do - a pandemic will occur, giving your younger self the motivation to go back and stop it. No matter how hard you try to create a paradox, events will always adjust to themselves in order to avoid any contradictions,” the physicists added.

“A number of mathematical processes we discovered show that time travel with free will is logically possible in our Universe without any paradoxes,” the scientists concluded.

University of Queensland physicist Dr Fabio Costa, one of the project's leaders, added: "The math is consistent and the results are the stuff of science fiction."

A paper detailing the research is published in the journal Classical and Quantum Gravity.

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