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

Episoder(415)

141 | Zeynep Tufekci on Information and Attention in a Networked World

141 | Zeynep Tufekci on Information and Attention in a Networked World

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140 | Dean Buonomano on Time, Reality, and the Brain

140 | Dean Buonomano on Time, Reality, and the Brain

"Time" and "the brain" are two of those things that are somewhat mysterious, but it would be hard for us to live without. So just imagine how much fun it is to bring them together. Dean Buonomano is o...

29 Mar 20211h 27min

139 | Elizabeth Anderson on Equality, Work, and Ideology

139 | Elizabeth Anderson on Equality, Work, and Ideology

Imagine two people with exactly the same innate abilities, but one is born into a wealthy family and the other is born into poverty. Or two people born into similar circumstances, but one is paralyzed...

22 Mar 20211h 19min

138 | Daryl Morey on Analytics, Psychology, and Basketball

138 | Daryl Morey on Analytics, Psychology, and Basketball

You might think that human beings, exhausted by competing for resources and rewards in the real world, would take it easy and stick to cooperation in their spare time. But no; we are fascinated by com...

15 Mar 20211h 16min

AMA | March 2021

AMA | March 2021

Welcome to the March 2021 Ask Me Anything episode of Mindscape! These are funded by Patreon supporters (who are also the ones asking the questions). With an expanding number of questions, it's become ...

10 Mar 20213h 11min

137 | Justin Clarke-Doane on Mathematics, Morality, Objectivity, and Reality

137 | Justin Clarke-Doane on Mathematics, Morality, Objectivity, and Reality

On a spectrum of philosophical topics, one might be tempted to put mathematics and morality on opposite ends. Math is one of the most pristine and rigorously-developed areas of human thought, while mo...

8 Mar 20211h 32min

136 | Roderick Graham on Cyberspace, Race, and Cultural Conservatism

136 | Roderick Graham on Cyberspace, Race, and Cultural Conservatism

The internet has made it so much easier for people to talk to each other, in a literal sense. But it hasn't necessarily made it easier to have rewarding, productive, good-faith conversations. Here I t...

1 Mar 20211h 23min

135 | Shadi Bartsch on Plato, Vergil, Confucius, and Modernity

135 | Shadi Bartsch on Plato, Vergil, Confucius, and Modernity

In our postmodern world, studying the classics of ancient Greece and Rome can seem quaint at best, downright repressive at worst. (We are talking about works by dead white men, after all.) Do we still...

22 Feb 20211h 20min

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