Once the “Grandfather Paradox” was resolved, time travel was allowed.

On December 12, Lorenzo Gavassino published a study at Vanderbilt University in the United States under the beautiful title "life in a closed time curve." Lorenzo's solution is inspired by the work of physicist Carlos Robelli who demonstrated that the behavior of thermodynamics fundamentally changes in a closed time curve, in such a loop quantum fluctuations arise that can erase entropy, which is a somewhat fundamental concept.

This process of erasing entropy would be very different to what we experience in everyday life. These fluctuations could have dramatic effects on a time traveler, for example, as entropy decreases a person's memories could disappear and they could age. can be reversed, i.e. rejuvenated, this phenomenon could even make irreversible events like killing your grandfather temporary in such a closed loop, which nullifies the grandfather paradox entirely and would make travel possible. in the time.

Lorenzo explained “most physicists and philosophers of the past have argued that if time travel exists, nature will always find a way to avoid contradictory situations, a principle of self-consistency was introduced that suggests that everything should align to create a story.” logically coherent, my work, provided the first rigorous derivation of this principle of self-awareness directly from physics established the standard framework of quantum mechanics without additional postulates, without controversial assumptions and demonstrated that self-awareness of history follows naturally from “quantum laws”

This mathematically means that time travel would be possible, but closed time-type curves actually exist in the real universe. There are other explanations for time travel that do not require timelines, with these closed curves there would be no need.

The point is, there really are closed temporal curves in the real universe, in which we live, not in the theoretical one, nor in the mathematical one or in another multiverse, a closed temporal curvature is a timeline that closes on itself, allowing an object to travel back in time, in Einstein's general theory of relativity, for example, black holes are regions of space-time where gravity is so strong that nothing, not even light can escape and according to some solutions of the equations of general relativity, the Rotating black holes, which appear to be the majority, could harbor closed time curves, this is because the rotation of a black hole can create a region of spacetime where time is curved in a way that allows an object to travel back in time. time, but of course a black hole is a very special singularity, we cannot go, get into one and expect to emerge in the France of 1793 to see Napoleon or kill him.

In a black hole everything goes in and nothing comes out unless we find a white hole, but in the world we live in things are more complex. In 1992, Stephen Hawking proposed a famous chronology protection conjecture. It seems like a trick, he suggests. this chronology protection conjecture that the laws of physics could prevent time loops from forming this could imply that space-time becomes singular or decays just before a loop can be established, That is, it could never be closed.

Lorenzo's work, although it does not confirm or discover that closed loops exist, does serve as an advance, it is a very valuable tool to at least create mathematical models that help us understand why entropy behaves the way it does. That would be a huge advance, knowing how entropy works and why it does so in that direction.

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