The Secrets of Stephen Hawking's Last Paper

13 October, 2018, 18:32 | Author: Darnell Taylor

This essentially means that we can't see a black hole directly. He calculated the black-body temperature of a black hole using an equation that now graces his memorial in Westminster Abbey. In fact, most galaxies - the Milky Way included - are thought to be held together by the gravity of supermassive black holes with masses millions of times that of the sun, which lie at the galactic center. Entropy rises the hotter an object gest leading the physicists to speculate that a black hole's entropy may be recorded by soft hair. According to the laws of quantum mechanics, matter can not simply disappear without leaving behind information of its previous state.

However, according to physics, information is never lost. Eventually, black holes will evaporate, leaving a vacuum that is the same everywhere else. In fact, the paper is based on a series of discoveries made by Hawking in the 1970s that indicated that black holes evaporate and destroy all that falls in their midst.

"The difficulty is that if you throw something into a black hole it looks like it disappears", explained Perry.

"Assuming the existence of a quantum Hilbert space on which these charges generate the symmetries, as well as the applicability of the Cardy formula, the central charges reproduce the macroscopic area-entropy law for generic Kerr black holes", a summary of the study says. So where exactly do all the matter that a black hole has consumed go? This is the "no-hair" theorem, the idea being that like bald heads, black holes have few features to distinguish themselves.

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Stephen Hawking's contribution to the scientific knowledge of black holes is well known.

Days before Hawking died, co-authors Malcolm J. Perry, Sasha Haco and Andrew Strominger were working on the paper. The physicists conclude that their result agrees with Hawking's original calculation of black-hole entropy. These photons respond to the profound gravitational force emanating from the black hole.

This year, another one of Hawking's papers has been posthumously published, authored in collaboration with Thomas Hertog, a Belgian physicist at the Catholic University of Leuven. Here's what the study proposes. By reducing the multiverse down to a more manageable set of universes which all resemble each other, scientists now have a better chance of arriving at a fully predictive framework of cosmology.

The moment that all of us have been awaiting is here: Legendary cosmologist Stephen Hawking's much anticipated scientific paper that he completed days before his death in March, has been released.


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