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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Avsnitt(427)

220 | Lara Buchak on Risk and Rationality

220 | Lara Buchak on Risk and Rationality

Life is rich with moments of uncertainty, where we're not exactly sure what's going to happen next. We often find ourselves in situations where we have to choose between different kinds of uncertainty...

12 Dec 20221h 16min

AMA | December 2022

AMA | December 2022

Welcome to the December 2022 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 Pa...

5 Dec 20223h 15min

219 | Dani Bassett and Perry Zurn on the Neuroscience and Philosophy of Curiosity

219 | Dani Bassett and Perry Zurn on the Neuroscience and Philosophy of Curiosity

It's easy enough to proclaim that we are curious creatures, but what does that really mean? What kinds of curiosity are there? And how does curiosity arise in our brains? Perry Zurn and Dani Bassett a...

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218 | Raphael Bousso on Black Holes and the Holographic Universe

218 | Raphael Bousso on Black Holes and the Holographic Universe

Stephen Hawking's discoveries of black hole radiation, entropy, and the information-loss problem have both taught us an enormous amount about the relationship between quantum mechanics and gravity, an...

21 Nov 20221h 21min

217 | Margaret Levi on Moral Political Economy

217 | Margaret Levi on Moral Political Economy

Why do people voluntarily hand over authority to a government? Under what conditions should they do so? These questions are both timeless and extremely timely, as modern democratic governments struggl...

14 Nov 20221h 21min

AMA | November 2022

AMA | November 2022

Welcome to the November 2022 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 Pa...

7 Nov 20223h

216 | John Allen Paulos on Numbers, Narratives, and Numeracy

216 | John Allen Paulos on Numbers, Narratives, and Numeracy

People have a complicated relationship to mathematics. We all use it in our everyday lives, from calculating a tip at a restaurant to estimating the probability of some future event. But many people f...

31 Okt 20221h 10min

215 | Barry Loewer on Physics, Counterfactuals, and the Macroworld

215 | Barry Loewer on Physics, Counterfactuals, and the Macroworld

The founders of statistical mechanics in the 19th century faced an uphill battle to convince their fellow physicists that the laws of thermodynamics could be derived from the random motions of microsc...

24 Okt 20221h 34min

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