18 | Clifford Johnson on What's So Great About Superstring Theory

18 | Clifford Johnson on What's So Great About Superstring Theory

String theory is a speculative and highly technical proposal for uniting the known forces of nature, including gravity, under a single quantum-mechanical framework. This doesn't seem like a recipe for creating a lightning rod of controversy, but somehow string theory has become just that. To get to the bottom of why anyone (indeed, a substantial majority of experts in the field) would think that replacing particles with little loops of string was a promising way forward for theoretical physics, I spoke with expert string theorist Clifford Johnson. We talk about the road string theory has taken from a tentative proposal dealing with the strong interactions, through a number of revolutions, to the point it's at today. Also, where all those extra dimensions might have gone. At the end we touch on Clifford's latest project, a graphic novel that he wrote and illustrated about how science is done. Clifford Johnson is a Professor of Physics at the University of Southern California. He received his Ph.D. in mathematics and physics from the University of Southampton. His research area is theoretical physics, focusing on string theory and quantum field theory. He was awarded the Maxwell Medal from the Institute of Physics. Johnson is the author of the technical monograph D-Branes, as well as the graphic novel The Dialogues. Home page Wikipedia page Publications A talk on The Dialogues Asymptotia blog Twitter

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275 | Solo: Quantum Fields, Particles, Forces, and Symmetries

275 | Solo: Quantum Fields, Particles, Forces, and Symmetries

Publication week! Say hello to Quanta and Fields, the second volume of the planned three-volume series The Biggest Ideas in the Universe. This volume covers quantum physics generally, but focuses espe...

13 Touko 20242h 12min

AMA | May 2024

AMA | May 2024

Welcome to the May 2024 Ask Me Anything episode of Mindscape! These monthly excursions are funded by Patreon supporters (who are also the ones asking the questions). We take questions asked by Patreon...

6 Touko 20243h 35min

274 | Gizem Gumuskaya on Building Robots from Human Cells

274 | Gizem Gumuskaya on Building Robots from Human Cells

Modern biology is advancing by leaps and bounds, not only in understanding how organisms work, but in learning how to modify them in interesting ways. One exciting frontier is the study of tiny "robot...

29 Huhti 20241h 10min

273 | Stefanos Geroulanos on the Invention of Prehistory

273 | Stefanos Geroulanos on the Invention of Prehistory

Humanity itself might be the hardest thing for scientists to study fairly and accurately. Not only do we come to the subject with certain inevitable preconceptions, but it's hard to resist the temptat...

22 Huhti 20241h 19min

272 | Leslie Valiant on Learning and Educability in Computers and People

272 | Leslie Valiant on Learning and Educability in Computers and People

Science is enabled by the fact that the natural world exhibits predictability and regularity, at least to some extent. Scientists collect data about what happens in the world, then try to suggest "law...

15 Huhti 20241h 8min

AMA | April 2024

AMA | April 2024

Welcome to the April 2024 Ask Me Anything episode of Mindscape! These monthly excursions are funded by Patreon supporters (who are also the ones asking the questions). We take questions asked by Patre...

8 Huhti 20243h 14min

271 | Claudia de Rham on Modifying General Relativity

271 | Claudia de Rham on Modifying General Relativity

Einstein's theory of general relativity has been our best understanding of gravity for over a century, withstanding a variety of experimental challenges of ever-increasing precision. But we have to be...

1 Huhti 20241h 21min

270 | Solo: The Coming Transition in How Humanity Lives

270 | Solo: The Coming Transition in How Humanity Lives

Technology is changing the world, in good and bad ways. Artificial intelligence, internet connectivity, biological engineering, and climate change are dramatically altering the parameters of human lif...

25 Maalis 20242h 9min

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