Did This NEW Theory of Gravity Solve the Expanding Universe? Claudia de Rham [Ep. 419]

Into the Impossible With Brian Keating

Brian Keating

Science, Physics, Natural Sciences

4.7 • 1.1K Ratings

🗓️ 26 May 2024

⏱️ 57 minutes

🔗️ Recording | iTunes | RSS

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Summary

Join my mailing list https://briankeating.com/list to win a real 4 billion year old meteorite! All .edu emails in the USA 🇺🇸 will WIN! The acceleration of the expansion of the universe is one of the fundamental questions in cosmology. Scientists believe that dark energy is driving and accelerating the expansion; however, there is a discrepancy between the predicted amount of dark energy in the universe and our theoretical calculations based on the properties of fundamental particles. To get to the bottom of this, today's guest, Professor Claudia de Rham, proposed a new theory of "massive gravity" that could solve this “impossible” riddle. Claudia de Rham is a Swiss theoretical physicist at Imperial College London. She is known for her work at the intersection of gravity, cosmology, and particle physics. She won the 2020 Blavatnik Young Scientist Award for reviving the theory of massive gravity and has made significant contributions to understanding dark energy, dark matter, and gravity. Her research focuses on modified theories of gravity, including massive gravity and Galileon gravity. Join us as we explore the true nature of gravity and the beauty of falling! Key Takeaways: 00:00:00 Intro 00:01:19 Mass of the graviton 00:08:20 Judging a book by its cover 00:15:20 Could AI experience the joy of falling? 00:20:07 The speed of gravity 00:22:55 How would a breathing mode manifest itself? 00:34:08 Extra dimensions 00:40:00 Do we need a quantum theory of gravity? 00:45:00 Nothing happens at the Planck length 00:50:27 Quantum nature of gravity 00:55:34 Outro — Additional resources: 📝 Get one month of Snipd Premium for free with this link: https://get.snipd.com/Cx7S/brianSnipd Snipd lets you take Smart Notes 🧠 with AI 💡 — it’s my favorite podcast player 😀 ! ➡️ Connect with Claudia de Rham: 💻 LinkedIn: https://www.linkedin.com/in/claudia-de-rham-b2b4b3274/ ➡️ Follow me on your fav platforms: ✖️ Twitter: https://twitter.com/DrBrianKeating 🔔 YouTube: https://www.youtube.com/DrBrianKeating?sub_confirmation=1 📝 Join my mailing list: https://briankeating.com/list ✍️ Check out my blog: https://briankeating.com/cosmic-musings/ 🎙️ Follow my podcast: https://briankeating.com/podcast Into the Impossible with Brian Keating is a podcast dedicated to all those who want to explore the universe within and beyond the known. Make sure to subscribe so you never miss an episode! Learn more about your ad choices. Visit megaphone.fm/adchoices

Transcript

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0:00.0	What if there was an idea, a new theory of gravity that could bridge the gap between our predictions and observations of the most mysterious substance in the universe, dark energy?
0:10.6	Dark energy is a force that scientists believe is causing the expansion of the universe to not only increase, but to do so at an accelerating rate.
0:19.0	But there are discrepancies between the predicted amounts of dark energy in the universe and are theoretical calculations
0:24.6	based on the properties of the fundamental particles that we know and love.
0:29.3	We're trying to get to the bottom of this for years, almost 30 years without success. That is until today's
0:35.3	guest Professor Claudia Durram proposed a new theory of massive gravity that could
0:39.8	explain why the universe is accelerating and also solve the impossible dark energy puzzle.
0:46.0	Join Claudia and me as we fall ahead first into the dark side of the universe to uncover its most seemingly impossible mysteries and turn
0:57.3	the impossible into the inevitable.
0:59.6	Let's go. Any sufficiently advanced technology is indistinguishable from magic.
1:11.0	Open the pod bay doors.
1:14.0	Claudia, how are you doing today?
1:17.0	Well, I'm great.
1:18.0	Thank you.
1:19.0	How are you, Brian? I'm excellent now that I get a chance to talk to you.
1:21.0	We have a lot in common, but I'm going to start first
1:25.0	with a rather provocative question.
1:26.9	If you'll indulge me, a lot of this book
1:29.2	and a lot of your work corresponds
1:31.7	to the desire to
1:33.2	to the so-called mass of the graviton.
1:39.1	I want to start by asking you, why should we care
	...

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