Stephen Hawking Last Thought on Multiverse
Two weeks before his death, the British physicist completed the drafting of a scientific paper in which he laid the theoretical basis for proving the existence of other universes. And in which he explains how the one in which we find ourselves ends up.
Credits
While the world paid homage to the life of Stephen Hawking, one of the brightest minds of modern physics, who died on March 14 at the age of 76 , the academic world has learned of the existence of a last article to his signature, still under review , which could be its most important legacy.
The latest changes to the paper entitled A Smooth Exit from Eternal Inflation , and made together with fellow Thomas Hertog, a physicist at KU Leuven University in Belgium, date back to 10 days before Hawking's death: the work is visible on ArXiv.org , the site of the Cornell University Library which traces scientific articles before their official publication.
LOOKING FOR CLUES
According to The Sunday Times , the theoretical foundations for the demonstration of the idea of multiverse are laid out in the work : in particular, we can read the mathematical bases for creating a probe that analyzes the cosmic microwave background ( the Big Bang echo ) with the right sensors, can prove that ours is only one of several parallel universes . If this evidence had been found when Hawking was alive, he would have earned him the Nobel Prize in Physics (a prize that can not be posthumously awarded). "This was Stephen: boldly pushing where Star Trek does not dare," says Hertog.
FROM THE BEGINNING
The new article would start from what was proposed by Hawking and his colleague James Hartle in 1983, in the theory of the state without borders ( no boundary proposal ), which describes how the universe has expanded starting from an initial state of very high density and energy, in a process called inflation. According to this theory, "our" Big Bang would have been accompanied by an infinite number of others, each of which would have given rise to a distinct universe. This conclusion, however, has never been mathematically testable: "We wanted to turn the idea of the multiverse into a verifiable scientific system," said Hertog
END IN THE DARK
The article under revision also tries to outline the future of our Universe, destined to "extinguish" in the darkness when all its stars have exhausted their energy. This latter theory is controversial and not accepted by other cosmologists.
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