{"id":13547,"date":"2022-03-19T16:02:20","date_gmt":"2022-03-19T16:02:20","guid":{"rendered":"https:\/\/www.africa-press.net\/rwanda\/all-news\/scientists-claim-hairy-black-holes-explain-hawking-paradox"},"modified":"2022-03-19T19:30:01","modified_gmt":"2022-03-19T19:30:01","slug":"scientists-claim-hairy-black-holes-explain-hawking-paradox","status":"publish","type":"post","link":"https:\/\/www.africa-press.net\/rwanda\/all-news\/scientists-claim-hairy-black-holes-explain-hawking-paradox","title":{"rendered":"Scientists claim hairy black holes explain Hawking paradox"},"content":{"rendered":"

Africa-Press – Rwanda. <\/strong><\/span>Scientists say they have solved one of the biggest paradoxes in science first identified by Prof Stephen Hawking. He highlighted that black holes behave in a way that puts two fundamental theories at odds with each other.<\/p>\n

Black holes are dead stars that have collapsed and have such strong gravity that not even light can escape. New research claims to have resolved the paradox by showing that black holes have a property which they call \u201cquantum hair\u201d.<\/p>\n

\u201cThe problem has been cracked!\u201d Prof Xavier Calmet of Sussex University told BBC News exclusively, with much satisfaction. He was among those who developed the mathematical techniques they say has solved the paradox.<\/p>\n

At the heart of the paradox is a problem which has threatened to undermine two of physics most important theories. Einstein\u2019s general theory of relativity says information about what goes into a black hole cannot come out, but quantum mechanics says that is impossible.<\/p>\n

Prof Calmet and his colleagues say they have shown that the constituents of the star leave an imprint in the black hole\u2019s gravitational field. The scientists named the imprint \u201cquantum hair\u201d because their theory supersedes an earlier idea called the \u201cno hair theorem\u201d developed by Prof John Archibald Wheeler of Princeton University in New Jersey in the 1960s.<\/p>\n

Prof Wheeler came up with the name because it conveys the mathematical description of a black hole: an entity which has mass, spin and charge but is otherwise has no other physical features, bald if you like.<\/p>\n

Prof Calmet\u2019s \u201cyes hair theorem\u201d, published in the journal Physical Review Letters is revolutionary. It claims to resolve the Hawking paradox which has deeply troubled physicists ever since Prof Hawking came up with it in the 1970s.<\/p>\n

The paradox raised the possibility that either quantum mechanics or general relativity might be flawed, which is a terrifying prospect for theoretical physicists because they are the twin pillars on which most most of our understanding of the Universe rests. First ever black hole image released Taking the temperature of black holes Hawking: Black holes store information<\/p>\n

The \u201cyes hair theorem\u201d claims to resolve the paradox by bridging the gap between general relativity and quantum mechanics. The notion of quantum hair allows information about what goes into a black hole to come out again without violating any of the important principles of either theory. It is a simple and elegant solution.<\/p>\n

\u201cBut it is going to take some time for people to accept it,\u201d says Prof Calmet. That is because it is such a big deal in the world of theoretical physics.<\/p>\n

\u201cHawking came up with the paradox in the year that I was born,\u201d says Prof Calmet.<\/p>\n

Ever since then, many famous physicists around the world have been working on it, proposing very dramatic things to explain it, including some who had suggested that some aspects of quantum mechanics is wrong.<\/p>\n

\u201cSo it is going to take a while for people to accept that you don\u2019t need a radical solution to crack the issue,\u201d Prof Calmet said.<\/p>\n

If the \u201cyes hair theorem\u201d stands up to scrutiny, he said it could be the first step in connecting the theories of relativity \u2013 which concern gravity and quantum mechanics which largely focus on the three other forces of nature, which are electromagnetism and two nuclear forces.<\/p>\n

\u201cOne of the consequences of the Hawking paradox was that general relativity and quantum mechanics was incompatible. What we are finding is that they are very much compatible.\u201d<\/p>\n

The research team built on the work of Prof Suvrat Raju of the International Centre for Theoretical Sciences, in Bengaluru in India. He believes that together they have solved the Hawking paradox.<\/p>\n

\u201cIn the past few years, it has been recognized that the no hair theorem fails due to quantum effects and this resolves Hawking\u2019s paradox,\u201d he said.<\/p>\n

For More News And Analysis About Rwanda<\/a> Follow Africa-Press<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

Africa-Press – Rwanda. Scientists say they have solved one of the biggest paradoxes in science first identified by Prof Stephen Hawking. He highlighted that black holes behave in a way that puts two fundamental theories at odds with each other. Black holes are dead stars that have collapsed and have such strong gravity that not […]<\/p>\n","protected":false},"author":84,"featured_media":13546,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[24,28,31],"tags":[760,763,758],"class_list":["post-13547","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-all-news","category-homepage-english","category-miscellaneous","tag-africa-press","tag-africa-press-rwanda","tag-rwanda"],"yoast_head":"\nScientists claim hairy black holes explain Hawking paradox - Rwanda<\/title>\n<meta name=\"description\" content=\"Scientists say they have solved one of the biggest paradoxes in science first identified by Prof Stephen Hawking. 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