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1 de jul. de 2021 · Physicists at MIT and elsewhere have used gravitational waves to observationally confirm Hawking’s black hole area theorem for the first time. This computer simulation shows the collision of two black holes that produced the gravitational wave signal, GW150914.
- The Point of No Return
- Hawking Radiation
- The “Soft Hair” of Black Holes
Regardless of their size, they are all surrounded by an invisible boundary called the event horizon, the point of no return beyond which nothing can escape, not even light. Around that horizon the masses of dust and gas are so accelerated by the gigantic influx of gravity that they heat up and glow, emitting radiation and sometimes forming an accre...
Hawking’s demonstration that black holes can emit radiation is “his most important result,” Juan Maldacena, a physicist at Princeton’s Institute for Advanced Study who has made major contributions in string theory and quantum gravity, tells OpenMind. But at the time, this Hawking radiation opened a real schism between relativistic and quantum physi...
But for its part, the so-called information paradox has remained the most important of the questions raised by Hawking’s work, in the opinion of Maldacena. This question has kept physicists busy for the last half century, including Hawking himself, who until his death searched tirelessly for a theory capable of unifying general relativity and quant...
14 de mar. de 2024 · Stephen Hawking’s paradoxical finding that black holes don’t live forever has profound, unresolved implications for the quest for unifying theories of reality.
- Davide Castelvecchi
2 de jul. de 2021 · Hawking first proposed his theorem back in 1971. It predicted that the surface area of the event horizon of a black hole should never decrease, but only increase.
20 de mar. de 2018 · Stephen Hawking, the great British physicist who died last week at age 76, also worked until the end. But he focused on perhaps the most important problem in his area of physics, one his own work had posed: How do black holes preserve information encoded in the material that falls into them?
5 de abr. de 2024 · Stephen Hawking and Jacob Bekenstein calculated the entropy of a black hole in the 1970s, but it took physicists until now to figure out the quantum effects that make the formula work.
21 de abr. de 2016 · But in the 1970s, the renowned physicist Stephen Hawking said that he found them vexing. Although he accepted the common wisdom that black holes were completely black, his equations showed that...
