Can Cosmic Strings Solve The Early Galaxy Problem? | Robert Brandenberger

Into the Impossible With Brian Keating

Brian Keating

Science, Physics, Natural Sciences

4.7 • 1.1K Ratings

🗓️ 9 August 2024

⏱️ 43 minutes

🔗️ Recording | iTunes | RSS

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Summary

Cosmic strings, theorized as topological defects from the early universe, are being explored for their potential to solve significant cosmological puzzles. Renowned physicist Robert Brandenberger gave a lecture about their properties, formation, and persistence in various models beyond the standard particle physics framework. Cosmic strings might explain the existence of supermassive black holes and early galaxies observed by the James Webb Space Telescope. Superconducting cosmic strings emitting gravitational and electromagnetic radiation further support the formation of early universe structures. Understanding and detecting cosmic strings could change our knowledge of the universe and particle physics. Listen in for his wonderful lecture. — Key Takeaways: 00:00 Intro 01:11 Cosmic strings in physics 05:06 The importance of cosmic strings in particle physics 08:44 The relevance of cosmic strings for cosmology 13:46 Research problems 18:06 The azimuth angle 22:22 CMB polarization signal analysis 26:44 Detecting cosmic strings signals 34:13 Direct collapse black holes 40:05 Abundance of high redshift galaxies — Additional resources: ➡️ Connect with Robert Brandenberger: 💻 Website: https://www.physics.mcgill.ca/~rhb/ — ➡️ 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 follow/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	Robert's in our world renowned expert in the physics of the early universe,
0:03.2	quantum cosmology, string gas cosmology, and he's been a mentor to literally,
0:09.5	you know, thousands of people around the world, all of whom have gone on to, you know, try to approximate
0:15.4	a sliver of Robert's greatness. I had the honor of interviewing him on my podcast last year. I'm going to do another one later on today.
0:22.6	And today's talking about Cosmic Strings and new observational windows.
0:25.2	And the thing that always struck me about Robert
0:27.2	was that he was not just some theorists who only cared
0:30.5	about the ephemeral and the theoretical. He always gave great career advice, mentorship
0:35.5	advice, teaching advice, and it's quite rare to have someone who's so deeply versed and contributed to the earliest models of re and as I said string cosmology to have such
0:46.3	practical hands-on knowledge and be able to liaise with experimentalists like myself.
0:52.1	So it's a great pleasure to have Robert here in person and
0:54.7	I can't wait to hear this wonderful lecture. Thank you.
0:59.4	Any sufficient the environment Any sufficiently advanced technology is indistinguishable from magic.
1:10.0	Open the pod bay doors now.
1:12.0	So you see I invented my own title for the seminar series,
1:17.0	Particle Cosmology Seminar,
1:19.0	because I think I have something to tell
1:22.0	particle physicists and something to tell asteroid cosmology people.
1:27.0	So this is why I call this particle cosmology seminar.
1:31.5	So I'm going to talk about searching for cosmic strings in new observation windows.
1:37.0	And as Dreyfel knows, I've been working on cosmic strings for quite a long time, on and off.
1:44.6	And what is new compared to the old work that we did on cosmic strings is
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