All Segments
Higgs Particle (Harry Cliff) | AI Podcast Clips
11 segments available
Full episode with Harry Cliff (Apr 2020): https://www.youtube.com/watch?v=8A-5gIW0-eI Clips channel (Lex Clips): https://www.youtube.com/lexclips Main channel (Lex Fridman): https://www.youtube.com/lexfridman (more links below) Podcast full episodes playlist: https://www.youtube.com/playlist?list=PLrAXtmErZgOdP_8GztsuKi9nrraNbKKp4 Podcasts clips playlist: https://www.youtube.com/playlist?list=PLrAXtmErZgOeciFP3CBCIEElOJeitOr41 Podcast website: https://lexfridman.com/ai Podcast on Apple Podcasts (iTunes): https://apple.co/2lwqZIr Podcast on Spotify: https://spoti.fi/2nEwCF8 Podcast RSS: https://lexfridman.com/category/ai/feed/ Harry Cliff is a particle physicist at the University of Cambridge working on the Large Hadron Collider beauty experiment that specializes in searching for hints of new particles and forces by studying a type of particle called the "beauty quark", or "b quark". In this way, he is part of the group of physicists who are searching answers to some of the biggest questions in modern physics. He is also an exceptional communicator of science with some of the clearest and most captivating explanations of basic concepts in particle physics I've ever heard. Subscribe to this YouTube channel or connect on: - Twitter: https://twitter.com/lexfridman - LinkedIn: https://www.linkedin.com/in/lexfridman - Facebook: https://www.facebook.com/lexfridman - Instagram: https://www.instagram.com/lexfridman - Medium: https://medium.com/@lexfridman - Support on Patreon: https://www.patreon.com/lexfridman
Segments Timeline
The God Particle Explained
Harry Cliff discusses the origins of the term 'God particle' and its implications in physics. He explains how the Higgs boson fits into the electroweak theory, which unifies electromagnetism and the weak force, and the historical context of its prediction and discovery.
"I mean wasn't the Higgs called the god particle at some point it was by a guy trying to sell popular science books yeah yeah but by me I am because when I was hearing it I thought it would I mean that..."
The LHC's Role in Higgs Discovery
Cliff elaborates on the Large Hadron Collider (LHC) and its predecessor, the Large Electron Positron Collider. He explains how the LHC was built to search for the Higgs boson and the significance of the W and Z bosons' discovery in confirming the electroweak theory.
"particles that this theoretical structure only works if the Higgs is there so what then happens so you this question why is the LHC the size it is yes well actually the tunnel that the LHC is in was n..."
The Higgs Field's Unique Nature
In this segment, Cliff delves into the peculiarities of the Higgs field, which gives mass to particles. He discusses the challenges and mysteries surrounding the Higgs boson, including its potential composite nature and the implications for our understanding of particle physics.
"it'd be really weird if you could discover and these particles they all behave exactly just theory tells you they should but somehow this key piece of the picture is not there so in a way it depends h..."
Fine-Tuning the Higgs Field
Cliff explains the concept of fine-tuning in relation to the Higgs field, discussing how its energy value must be precisely calibrated for a universe capable of supporting complex structures. He presents the two extreme scenarios that could arise from incorrect tuning.
"thinking that the Higgs must come with a bunch of other particles or that it's perhaps made of other things so it's not a fundamental particle that it's made of smaller things I can talk about that if..."
Theories Behind the Higgs Field's Stability
This segment explores two main explanations for the stability of the Higgs field: the possibility of a divine creator and the multiverse theory. Cliff discusses the implications of these ideas and their scientific testability.
"the particles so the reason that electrons and quarks have mass is through the interaction with this energy that's stored in the Higgs field now it turns out that the precise value of this energy has ..."
Supersymmetry: A Potential Solution
Cliff introduces the concept of supersymmetry as a theoretical framework that could explain the Higgs field's stability. He discusses how this theory proposes a superpartner for every particle in the standard model and its implications for dark matter.
"possible yeah complexity so when you say I mean life any kind of complexity that's not either complete chaos or black holes yeah yeah I mean how does that make you feel what do you make that has such ..."
The Search for Superpartners
In this segment, Cliff discusses the expectations surrounding the LHC's search for supersymmetric particles, emphasizing the connection between the Higgs boson and potential superpartners. He reflects on the lack of discoveries in this area after a decade of data collection.
"form are more likely to give birth to more universes so you end up with universes which have similar laws I mean I don't know whatever but why I talked to dr. Lee recently understand this podcast and ..."
Composite Nature of the Higgs
Cliff explores the idea that the Higgs boson might not be a fundamental particle but rather a composite of smaller particles. He discusses various theories, including Technicolor and partial composite models, that attempt to explain the Higgs's properties.
"one we see so this is one of the written and supersymmetry has also got lots of other things going for it it predicts the existence of a dark matter particle which would be great it you know it potent..."
Patterns in Particle Physics
Cliff discusses the recurring patterns in particle physics, such as the existence of three generations of matter particles. He raises questions about the underlying reasons for these patterns and the search for a deeper understanding of particle interactions.
"made of well so the the oldest I think the original ideas about this was these theories called Technicolor which were basically like an analogy with the strong force so the idea was the Higgs boson wa..."
The Dream of a Unifying Theory
In this segment, Cliff reflects on the quest for a final unifying theory in physics, referencing Steven Weinberg's work. He discusses the excitement surrounding string theory and the challenges faced in understanding its implications for particle physics.
"understand what the ingredients why do we have wind so one of the big questions in particle physics is why are there three copies of the matter particles so in what we call the first generation which ..."
The Future of Particle Colliders
Cliff addresses the limitations of current particle colliders and the immense energy requirements needed to explore theories like string theory. He discusses the challenges of building larger colliders and the implications for future discoveries in physics.
"such a theory was coming and that was the time when string theory had been was was very exciting so string theory there's been this thing called the superstring revolution and theoretical physical ver..."