Stephen Hawking's Children and Colleagues Discuss Physicist's Final Book, Legacy

Stephen Hawking's Children and Colleagues Discuss Physicist's Final Book, Legacy

Stephen Hawking's Children and Colleagues Discuss Physicist's Final Book, Legacy







		In his last book, published on October 16, Stephen Hawking. deals with big questions about the universe, deepening in physics, cosmology, the existence of God and the future direction of humanity.

		During a round table held on October 15 at the Science Museum in London, Hawking's children and colleagues talked about the new book, called "Brief answers to the big questions"(Bantam), and the lasting impact of Hawking after his death in March.

		Hawking is famous as a theoretical physicist, but also as a scientific communicator: he broke into the popular scientific scene in 1988 with "A brief history of time"(Bantam) This new book contains the explanations that it has found most relevant since then.

The[[The best Stephen Hawking books: Black holes, multiverses and singularities]





						


From left to right: Tim Hawking, Lucy Hawking, moderator Roger Highfield, Malcolm Perry, Andrew Strominger and Fay Dowker meet to discuss the life and work of Stephen Hawking at the Science Museum in London on October 15, 2018 .

            						    Credit: Jody Kingzett, courtesy of the Museum of Science Group. 


		"This is almost a response to the response to 'A Brief History of Time,'" said Lucy Hawking, the scientist's daughter, during the panel. "For 30 years, my father has been asked questions regularly on a series of existential or scientific or ... social questions, and they have been given these very clear answers." Hawking came up with the concept and started the book before his death, but his family and colleagues gathered the final compilation of their answers, according to the panelists.

		"He says in the book that people want answers to big questions, and for him it was very important that he answered all these questions in an accessible, attractive, entertaining way and with which people could relate," Lucy Hawking said. "I was very interested in creating relevance for people with abstract concepts, and I think that is something that makes this book an absolutely fantastic way, I know people who have reviewed the book and said: 'It seems he has written this for me " "I did not expect that".

		In addition to the release of the book, Hawking's latest work, in the paradox of black hole information, it was recently published by his colleagues in the ArXiv prepress magazine. The article addressed a problem that Hawking faced for years: how to reconcile the fact that black holes evaporate slowly over time, which he discovered, with the idea that the information he contained would one day be lost.

		"He realized that there was a conflict between the physics of black holes, as it was understood, and the laws of quantum mechanics," said Malcolm Perry, co-author of the paper and mathematician at the University of Cambridge, during the panel. "Black holes would evaporate, but in doing so, information is lost, which is something that quantum mechanics does not allow."

		"It's a big problem Stephen gave us," said Andy Strominger, a physicist at Harvard University and co-author of the paper, during the panel. "Stephen understood how to unite the theory of black holes with the theory of quantum mechanics, and from there he derived the formula that is now on his tombstone. in Westminster Abbey, which essentially says how many gigabytes [of information are stored] In every black hole we see up in the sky. And our job is to explain this formula, and it was difficult to explain because they told us that black holes were bald and featureless objects. "





						


During a panel on October 15, 2018 at the Science Museum in London, the panelists discussed Stephen Hawking's new book and his work. This still comes from a short video that explains his final research on black holes.

            						    Credit: Jody Kingzett, courtesy of the Museum of Science Group. 


		But then, in 2015, Hawking and his collaborators discovered a mechanism by which a black hole could store information on its surface, using Ghostly particles without mass, referred to as "soft hairs". Now, Hawking's collaborators must finish tabulating if those particles could store enough information to avoid conflict with quantum mechanics.

		"This is what we are very excited to try to understand with more and more mathematical details," Strominger said. "And this document that came out last Tuesday is a big step in that direction."

		Hawking's former student, Fay Dowker, now a physical physicist at Imperial College London, spoke about how Hawking demonstrated to the public the importance of scientists and also brought together scientists in different disciplines.

		"Perhaps we lost our most powerful advocate for the value and importance of fundamental research in physics and science," Dowker said during the panel. "But as the physical community itself, internally, Stephen was a very powerful binding force in that community." At their large birthday conferences, many people came, drawn by love and respect for Stephen, from a huge variety of areas. different, all touched by their work. "

		"His scientific legacy is enormously broad, epically broad, I would say, so there would be cosmologists, people who work in black holes, in gravitational waves, in quantum gravity, in string theory, in the foundations of quantum mechanics, in theory of the condensed matter, in terms of quantum information, and all would be gathered by Stephen, "he added. "That strength, to unite so many people who work in so many different things, is something that we will regretfully miss."

		According to Hawking's son Timothy Hawking, this new book brings together the issues that Hawking has touched throughout his career in popular science, not to mention in the discussions at the table. It seems ready to connect with an audience that seeks the guiding force of science in today's world, of a man whose name has become synonymous with the forefront of science.

		"If you had to summarize this book, I would say it is a call to unity, it is a call to humanity, it is a call to unite us and face the challenges that we face and try to work together to find a solution," said Lucy Hawking.

		"I think that reading the book again, it's almost as if his voice had been jumping off the page when reading the chapters, and it's been great to reconnect with him that way," added Timothy Hawking.

		You can look at the October 15 panel here.



	Send an email to Sarah Lewin at slewin@space.com or follow her @SarahExplains. Follow us on Twitter @Spacedotcom and in Facebook. Original article about Space.com.

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