“I only had 30 minutes to Invent Eternal Inflation!” Andrei Linde | INTO THE IMPOSSIBLE Podcast (#310)

Into the Impossible With Brian Keating

Brian Keating

Physics, Natural Sciences, Science

4.7 • 1.1K Ratings

🗓️ 9 April 2023

⏱️ 126 minutes

🔗️ Recording | iTunes | RSS

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Summary

Please support the podcast by taking our short listener survey: https://www.surveymonkey.com/r/intotheimpossible Watch the video of this episode here: https://youtu.be/Qq2OgL8Hb6o?=sub_confirmation=1 Andrei Linde is one of the main authors of inflationary cosmology. At present, it is the leading candidate for the theory of the very early stages of expansion of the universe and formation of its large scale structure. In this podcast Linde will describe some of the popular versions of this theory, as well as observational evidence it favor of inflationary cosmology. We also discuss Andrei’s career, the big problems in cosmology, and how Andrei invented eternal chaotic inflation which can lead to a universe which is constantly inflating, where new universes are constantly being created. Eternal inflation is a theory that states that the universe is constantly inflating, and that new universes are constantly being created. Here's his 1986 paper about it ETERNAL CHAOTIC INFLATION http://cds.cern.ch/record/167897/files/CM-P00066672.pdf Professor Linde’s seminal book PARTICLE PHYSICS AND INFLATIONARY COSMOLOGY is available in PDF format: https://arxiv.org/pdf/hep-th/0503203.pdf Here are some past episodes that complement this one: Anna Ijjas: Bouncing cosmology https://youtu.be/aGlLjq4OcmE Will Kinney: An Infinity of Worlds https://youtu.be/iDsqy9QVGoI Neil Turok Endless Universes: https://youtu.be/Dt5cFLN65fI Note there are a number of alternative theories to cosmic inflation. Some of the most popular alternatives include: The ekpyrotic universe: This theory suggests that the universe began in a state of contraction, rather than expansion. The contraction would have eventually led to a singularity, at which point the universe would have bounced back into expansion. The cyclic universe: This theory is similar to the ekpyrotic universe, but it suggests that the universe goes through a series of cycles of contraction and expansion. The varying-speed-of-light universe: This theory suggests that the speed of light was not constant in the early universe. If this is true, it could explain how the universe could have expanded rapidly without violating the laws of physics. The string gas universe: This theory suggests that the early universe was filled with a gas of strings. The strings would have interacted with each other, causing the universe to expand rapidly. Subscribe to the Jordan Harbinger Show for amazing content from Apple’s best podcast of 2018! https://www.jordanharbinger.com/podcasts Please leave a rating and review: On Apple devices, click here, https://apple.co/39UaHlB On Spotify it’s here: https://spoti.fi/3vpfXok On Audible it’s here https://tinyurl.com/wtpvej9v Find other ways to rate here: https://briankeating.com/podcast Support the podcast on Patreon https://www.patreon.com/drbriankeating or become a Member on YouTube- https://www.youtube.com/channel/UCmXH_moPhfkqCk6S3b9RWuw/join To advertise with us, contact advertising@airwavemedia.com Learn more about your ad choices. Visit megaphone.fm/adchoices

Transcript

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0:00.0	I was so upset I had ulcer at that time because I think because I did not see any way to make it work.
0:15.0	And then there was a paper by Alan Booth together with Eric Weinberg saying that it's impossible to make it work.
0:21.0	Then Steve Hawking came to Moscow proving that it is, it cannot be done.
0:26.4	But I somehow found a way to do it in new inflation first.
0:31.6	New inflation was, you start with the similar initial
0:35.3	conditions but not in a minimum potential but maybe on a shallow maximum or shallow
0:41.2	minimum and after that you roll for a long time.
0:44.0	You just need to have this quadratic potential,
0:46.0	and you feel in the beginning of the universe
0:50.0	to stay somewhere out of the minimum, that's all you need.
0:53.0	So it was so simple that this was for me at the moment after that,
0:59.0	I understood that we are not just doing some logic, but if harmonic oscillator can explain you the origin of the
1:06.8	whole universe, that was the moment when I understood that this is a time to write a book,
1:10.6	everything is done. Welcome everyone to this extended episode of Into the Impossible with the great theoretical physicist
1:22.0	and one of the founders of cosmological inflation,
1:24.4	Andre Linde. In this episode, you'll get the full story of inflationary theory straight from the source.
1:31.4	How Professor Linde struggled with inconsistencies in the hot
1:34.2	big bang theory and the direction of his own career to become one of the driving
1:38.1	forces for a generation of both theoretical and experimental cosmologists.
1:44.1	From quantum fluctuations to predictions of pocket universes, this is science from the source.
1:51.2	Please keep into the impossible in your feed by subscribing and following.
1:56.0	And for some extra credit, jump over to our YouTube channel at D.R. Brian Keating, that's
	...

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