While time travel remains a concept mostly explored in science fiction, new research led by physics student Germain Tobar from the University of Queensland in Australia suggests that time travel might be possible without creating paradoxes. Tobar’s work focuses on reconciling time travel with the “grandfather paradox,” a conundrum in which time travelers could theoretically prevent their own existence. The calculations propose that space-time could adapt to prevent paradoxes, allowing for a form of time travel that is logically possible within the constraints of our Universe.
The study considers the influence of deterministic processes on various regions in the space-time continuum, demonstrating how closed time-like curves, as predicted by Einstein’s theory of general relativity, can coexist with the rules of free will and classical physics. Tobar’s work also incorporates the hypothesis that time travel is possible but comes with restrictions, preventing the creation of paradoxes. In this model, time travelers would have the freedom to act but within limits to avoid inconsistencies.
While the mathematical calculations provide a framework for the possibility of time travel without paradoxes, actualizing such travel remains a theoretical challenge. The study contributes to the ongoing exploration of time travel concepts in physics and highlights the complex interplay between deterministic processes, free will, and the laws of classical physics in the context of time travel.
“The range of mathematical processes we discovered show that time travel with free will is logically possible in our Universe without any paradox,” said physicist Fabio Costa from the University of Queensland, who supervised the research. The research was published in the journal Classical and Quantum Gravity.
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Reference: https://www.sciencealert.com/physicist-discovers-paradox-free-time-travel-is-theoretically-possible
