Sean Carroll Explains Quantum Field Theory

Sean Carroll Explains Quantum Field Theory

Sean Carroll is creating a profoundly new approach to sharing physics with a broad audience, one that goes beyond analogies to show how physicists really think. He cuts to the bare mathematical essence of our most profound theories, explaining every step in a uniquely accessible way.

Quantum field theory is how modern physics describes nature at its most profound level. Starting with the basics of quantum mechanics itself, Sean Carroll explains measurement and entanglement before explaining how the world is really made of fields. You will finally understand why matter is solid, why there is antimatter, where the sizes of atoms come from, and why the predictions of quantum field theory are so spectacularly successful. Fundamental ideas like spin, symmetry, Feynman diagrams, and the Higgs mechanism are explained for real, not just through amusing stories. Beyond Newton, beyond Einstein, and all the intuitive notions that have guided homo sapiens for millennia, this book is a journey to a once unimaginable truth about what our universe is.

Sean Carroll is Homewood Professor of Natural Philosophy at Johns Hopkins University, and Fractal Faculty at the Santa Fe Institute. He is host of the Mindscape podcast, and author of From Eternity to Here, The Particle at the End of the Universe, The Big Picture, and Something Deeply Hidden. He has been awarded prizes and fellowships by the National Science Foundation, NASA, the American Institute of Physics, the Royal Society of London, and many others. He lives in Baltimore with his wife, writer Jennifer Ouellette. His new book series, The Biggest Ideas in the Universe, includes one volume on Space, Time, and Motion, and this new volume on Quanta and Fields.

Shermer and Carroll discuss: the measurement problem in physics • wave functions • entanglement • fields • interactions • scale • symmetry • gauge theory • phases • matter • atoms • time • double-slit experiment • superposition • directionality in nature • the multiverse • known unknowables • Is there a place for God in scientific epistemology?

Episoder(562)

205. Richard Dawkins on evangelizing for evolution, science, skepticism, philosophy, reason, and rationality, based on his book Books Do Furnish a Life: Reading and Writing Science

205. Richard Dawkins on evangelizing for evolution, science, skepticism, philosophy, reason, and rationality, based on his book Books Do Furnish a Life: Reading and Writing Science

In episode 205, Michael Shermer speaks with Richard Dawkins, the author of The Selfish Gene, voted The Royal Society’s Most Inspiring Science Book of All Time, and also the bestsellers The Blind Watchmaker, Climbing Mount Improbable, The Ancestor’s Tale, The God Delusion, and two volumes of autobiography, An Appetite for Wonder and Brief Candle in the Dark. He is a Fellow of New College, Oxford and both the Royal Society and the Royal Society of Literature. In 2013, Dawkins was voted the world’s top thinker in Prospect magazine’s poll of 10,000 readers from over 100 countries. This episode is heavily edited because Dawkins was having trouble with his voice, and Shermer tried to speak a little more to give Dawkins a chance to let his voice rest.

1 Sep 20211h 27min

204. Carole Hooven on T: The Story of Testosterone, the Hormone that Dominates and Divides Us

204. Carole Hooven on T: The Story of Testosterone, the Hormone that Dominates and Divides Us

In episode 204, Michael Shermer speaks with codirector of undergraduate studies in the Department of Human Evolutionary Biology at Harvard University, Carole Hooven, PhD about testosterone. While most people agree that sex differences in human behavior exist, they disagree about the reasons. But the science is clear: testosterone is a potent force in human society, driving the bodies and behavior of the sexes apart. But, as Hooven shows in T, it does so in concert with genes and culture to produce a vast variety of male and female behavior. And, crucially, the fact that many sex differences are grounded in biology provides no support for restrictive gender norms or patriarchal values. In understanding testosterone, we better understand ourselves and one another — and how we might build a fairer, safer society.

28 Aug 20211h 47min

203. Lee McIntyre — How to Talk to a Science Denier: Conversations with Flat Earthers, Climate Deniers, and Others Who Defy Reason

203. Lee McIntyre — How to Talk to a Science Denier: Conversations with Flat Earthers, Climate Deniers, and Others Who Defy Reason

“Climate change is a hoax — and so is coronavirus.” “Vaccines are bad for you.” These days, many of our fellow citizens reject scientific expertise and prefer ideology to facts. They are not merely uninformed — they are misinformed. They cite cherry-picked evidence, rely on fake experts, and believe conspiracy theories. How can we convince such people otherwise? How can we get them to change their minds and accept the facts when they don’t believe in facts? In this conversation based on his new book, Lee McIntyre shows that anyone can fight back against science deniers, and argues that it’s important to do so.

24 Aug 20211h 35min

202. Julia Galef — The Scout Mindset: Why Some People See Things Clearly and Others Don’t

202. Julia Galef — The Scout Mindset: Why Some People See Things Clearly and Others Don’t

When it comes to what we believe, humans see what they want to see. We have what Julia Galef calls a “soldier” mindset: a drive to defend the ideas we most want to believe — and shoot down those we don’t. But if we want to get things right more often, argues Galef, we should train ourselves to have a “scout” mindset. Unlike the soldier, a scout’s goal isn’t to defend one side over the other. It’s to go out, survey the territory, and come back with as accurate a map as possible. Regardless of what they hope to be the case, above all, the scout wants to know what’s actually true. In The Scout Mindset, Galef explores why our brains deceive us and what we can do to change the way we think.

21 Aug 20211h 46min

201. Michael Shermer on Evolution, I.D. Theory, Consciousness, Morality, Gullibility, and Nothing (AMA # 7)

201. Michael Shermer on Evolution, I.D. Theory, Consciousness, Morality, Gullibility, and Nothing (AMA # 7)

In this AMA Dr. Michael Shermer answers your questions about evolution and creationism, intelligent design theory, the hard problem of consciousness, the origins of morality, how science deals with anomalies, to what extent humans are naturally rational or irrational / skeptical or gullible, and why there is something rather than nothing.

18 Aug 20211h 13min

200. Philip Zimbardo on the Nature & Nurture of Good & Evil

200. Philip Zimbardo on the Nature & Nurture of Good & Evil

August 15 marks the 50th anniversary of day one of the Stanford Prison Experiment — one of the most controversial studies in the history of social psychology. In this conversation, Michael Shermer speaks with renowned social psychologist and creator of the Stanford Prison Experiment Philip Zimbardo, exploring the mechanisms that make good people do bad things, how moral people can be seduced into acting immorally, and what this says about the line separating good from evil. His book, The Lucifer Effect, explains why we are all susceptible to the lure of “the dark side.” and how situational forces and group dynamics can work in concert to make monsters out of decent men and women. Shermer and Zimbardo discuss: Zimbardo’s life mission to understand the nature of evil, the Stanford Prison Experiment (SPE) and its critics, the nature of human nature, The Dark Triad that leads to violence, obedience to authority, free will/determinism, and how we can teach ourselves to act heroically.

15 Aug 20211h 49min

199. David Potter — Disruption: Why Things Change

199. David Potter — Disruption: Why Things Change

This conversation takes a deep dive into disruptions. How do things change? The question is critical to the historical study of any era but it is also a profoundly important issue today as western democracies find the fundamental tenets of their implicit social contract facing extreme challenges from forces espousing ideas that once flourished only on the outskirts of society. Not all radical groups are the same, and all the groups that the book explores take advantage of challenges that have already shaken the social order. They take advantage of mistakes that have challenged belief in the competence of existing institutions to be effective. It is the particular combination of an alternative ideological system and a period of community distress that are necessary conditions for radical changes in direction. As Disruption demonstrates, not all radical change follows paths that its original proponents might have predicted.

10 Aug 20211h 23min

198. Bernardo Kastrup on the Nature of Reality: Materialism, Idealism, or Skepticism

198. Bernardo Kastrup on the Nature of Reality: Materialism, Idealism, or Skepticism

In this expansive conversation, Michael Shermer speaks with Bernardo Kastrup, the executive director of Essentia Foundation. His work has been leading the modern renaissance of metaphysical idealism, the notion that reality is essentially mental. He has a Ph.D. in philosophy (ontology, philosophy of mind) and another Ph.D. in computer engineering (reconfigurable computing, artificial intelligence). Shermer and Kastrup discuss: materialism, idealism, dualism, monism, panpsychism, free will, determinism, consciousness, the problem of other minds, artificial intelligence, out of body and near-death experiences, model dependent realism, and the ultimate nature of reality.

7 Aug 20212h 13min

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