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)

308 | Alison Gopnik on Children, AI, and Modes of Thinking

308 | Alison Gopnik on Children, AI, and Modes of Thinking

We often study cognition in other species, in part to learn about modes of thinking that are different from our own. Today's guest, psychologist/philosopher Alison Gopnik, argues that we needn't look ...

17 Mar 20251h 9min

AMA | March 2025

AMA | March 2025

Welcome to the March 2025 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...

10 Mar 20252h 58min

307 | Kevin Peterson on the Theory of Cocktails

307 | Kevin Peterson on the Theory of Cocktails

A lot of science goes into crafting the perfect cocktail. Balancing sweet and bitter notes, providing the right amount of aeration and dilution, getting it to just the right temperature and keeping it...

3 Mar 20251h 16min

306 | Helen Czerski on Our Energetic Oceans

306 | Helen Czerski on Our Energetic Oceans

It is commonplace to refer to the Earth's oceans as vast and largely unexplored. But we do understand some aspects, and improving that understanding is crucial to ensuring the continued viability and ...

24 Feb 20251h 12min

305 | Lilliana Mason on Polarization and Political Psychology

305 | Lilliana Mason on Polarization and Political Psychology

Political outcomes would be relatively simple to predict and understand if only people were well-informed, entirely rational, and perfectly self-interested. Alas, real human beings are messy, emotiona...

17 Feb 20251h 17min

Bonus | Cuts to Science Funding and Why They Matter

Bonus | Cuts to Science Funding and Why They Matter

The Trump administration, led by Elon Musk and his Department of Government Efficiency, has proposed sweeping cuts to spending on science research here in the US, in particular at the National Institu...

12 Feb 20251h 10min

304 | James Evans on Innovation, Consolidation, and the Science of Science

304 | James Evans on Innovation, Consolidation, and the Science of Science

It is a feature of many human activities - sports, cooking, music, interpersonal relations - that being able to do them well doesn't necessarily mean you can accurately describe how to do them well. S...

10 Feb 20251h 16min

303 | AMA | February 2025

303 | AMA | February 2025

Welcome to the February 2025 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...

3 Feb 20253h 44min

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