AaS! 116: Is String Theory Worth It? (Part 2: Tuning the Strings)

Ask a Spaceman!

Paul M. Sutter

Astrophysics, Science, Cosmos, Holes, Black, Astronomy, Natural Sciences, Universe, Cosmology, Space, Physics

4.8 • 853 Ratings

🗓️ 19 November 2019

⏱️ 49 minutes

🔗️ Recording | iTunes | RSS

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Summary

How did String Theory get started? What has made the idea so popular over the decades? Can we ever truly have a theory of quantum gravity? What is supersymmetry, the landscape, and the AdS/CFT Correspondence? What do holograms have to do with this? How many dimensions do we live in? Why does String Theory have such a hard time making predictions? How are we supposed to judge a theory that isn’t done yet? It’s a non-stop String Theory bonanza as I discuss these questions and more in today’s Ask a Spaceman!

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Music by Jason Grady and Nick Bain. Thanks to Cathy Rinella for editing.

Hosted by Paul M. Sutter, astrophysicist at The Ohio State University, and the one and only Agent to the Stars (http://www.pmsutter.com).

Transcript

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1:00.9	What really happens in the microscopic world? And by really, I mean, really. So you're going to
1:14.7	shoot two electrons at each other. Why? It doesn't matter. You're just going to do it. What happens?
1:22.9	What we want to know is how can we predict what an electron shooter collider experiment will see?
1:31.3	I want to shoot two electrons and I want to be able to predict what's going to come out at the other end.
1:36.5	Is that such a bad question? No, it's a great question.
1:39.8	When it comes to macroscopic objects like baseballs, I can follow with my eyes.
1:44.8	If I have a baseball shooter collider experiment and they shoot baseballs at each other, I can just watch them.
1:51.7	Little bit more challenging with electrons.
1:54.1	I can't really follow the electrons as they do their thing.
	...

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