meta_pixel
Tapesearch Logo
Log in
Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas

271 | Claudia de Rham on Modifying General Relativity

Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas

Sean Carroll

Physics, Science

4.74.7K Ratings

🗓️ 1 April 2024

⏱️ 82 minutes

🧾️ Download transcript

Summary

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 open to the possibility that general relativity -- even at the classical level, aside from any questions of quantum gravity -- isn't the right theory of gravity. Such speculation is motivated by cosmology, where we have a good model of the universe but one with a number of loose ends. Claudia de Rham has been a leader in exploring how gravity could be modified in cosmologically interesting ways, and we discuss the current state of the art as well as future prospects.

Blog post with transcript: https://www.preposterousuniverse.com/podcast/2024/04/01/271-claudia-de-rham-on-modifying-general-relativity/

Support Mindscape on Patreon.

Claudia de Rham received her Ph.D. in physics from the University of Cambridge. She is currently a professor of physics and deputy department head at Imperial College, London. She is a Simons Foundation Investigator, winner of the Blavatnik Award, and a member of the American Academy of Arts and Sciences. Her new book is The Beauty of Falling: A Life in Pursuit of Gravity.


Transcript

Click on a timestamp to play from that location

0:00.0

What do I do? What do I say? What do I say? In the Macmillan online community, we know what it's like to have cancer, because we have it too.

0:11.0

So, whatever you're thinking,

0:14.6

whatever you're feeling,

0:16.3

whatever you need to ask about cancer,

0:19.1

whatever the time of day or night,

0:22.2

we'll do whatever it takes to help you. To join us, search Macmillan

0:28.3

online community.

0:30.3

Hello everyone and welcome to the Mindscape podcast. I'm your host Sean Carroll.

0:34.0

There's a talk that I sometimes give. I've been giving for the last year and a half.

0:38.0

I'm sure you can find versions of it online.

0:40.0

It's related to volume one, the biggest ideas in the universe where I go through classical mechanics,

0:46.7

space time, all the way up to general relativity, Einstein's theory of gravity.

0:51.1

So in the talk, I have the high aspiration of in one hour explaining to you Einstein's equation

0:58.9

in all of its specific real glory.

1:01.6

The real equation, R-mu-nu minus 1-halfN-New-N-Nu, not just E-C-Mee-square. That's easy enough. Everyone can understand that.

1:10.0

And one of the themes of this talk that I give is the equations are smarter than we are.

1:17.5

This is why I think it's worth the effort in a book like the biggest idea series of talking about the equations.

1:25.0

Not that it's the only way to talk about physics etc.

1:28.0

Just because I have some equations in my recent book doesn't mean that I'm suddenly

1:32.0

looking down upon people who don't have equations in their books.

1:35.0

I think that all different levels, all different approaches are interesting and important, but one of those interesting ones is the equation-based one.

1:42.0

And the reason why is because as I said

...

Please login to see the full transcript.

Disclaimer: The podcast and artwork embedded on this page are from Sean Carroll, and are the property of its owner and not affiliated with or endorsed by Tapesearch.

Generated transcripts are the property of Sean Carroll and are distributed freely under the Fair Use doctrine. Transcripts generated by Tapesearch are not guaranteed to be accurate.

Copyright © Tapesearch 2026.