
Quantum field theory
Field of studyWikipedia
73
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22
EPISODES
9
PODCASTS
Search complete. 73 mentions across 22 episodes found for "Quantum field theory".
Oct 29, 2026
Anti-Matter and Quantum Relativity
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11:21Matt O'DowdHOST
That energy manifests as vibrations in the field.
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11:24Matt O'DowdHOST
Now, quantum field theory is a very deep topic, and it'll be the subject of upcoming episodes.
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11:31Matt O'DowdHOST
But for now, let's get to the bottom of these holes.
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11:35Matt O'DowdHOST
Paul Dirac's negative energy solutions describe antimatter, not holes in the Dirac C.
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14:36Matt O'DowdHOST
Penny of antimatter could be used to launch a good-sized rocket into orbit.
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14:41Matt O'DowdHOST
Dirac's incredible insight in combining quantum mechanics and relativity revealed an entire flip side of our universe with its prediction of antimatter.
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14:51Matt O'DowdHOST
It was also a key step in the discovery of quantum fields and quantum field theory and the development of the standard model of particle physics, which have become our best description of the underlying workings of reality.
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15:05Matt O'DowdHOST
And that's a quantum rabbit hole that we'll jump into very soon right here on Space Time.
The Battle for REALITY: String Theory vs Quantum Field Theory
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11:24Arvin AshHOST
The analogy can be made something like this.
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11:27Arvin AshHOST
Space-time is the background on which quantum fields exist.
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11:31Arvin AshHOST
Like paint exists on a canvas.
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11:34Arvin AshHOST
So when you try to make the canvas itself into a paint, the painting falls apart.
Moonshots #306, the Alex + Emad Cut (Oct 28, 2026) | Anthropic IPO, Kimi, Chain Theory
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34:44Alex Wissner-GrossGUEST
That's the aspiration, yes.
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34:46Alex Wissner-GrossGUEST
And it may have received less attention in the initial announcement because the way I broke up the initial announcement was into one self-contained letter deriving alpha of zero, the fine structure constant at the zero momentum transfer limit, which is one of the most precisely measured constants in all of science, on the one hand, and then a compendium of approximately 800 pages with so many different results spanning general relativity, standard model, QFT, and so on.
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35:13Alex Wissner-GrossGUEST
So I would say expect more results.
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35:16Alex Wissner-GrossGUEST
I do think it's very surprising.
Solving the Impossible in Quantum Field Theory
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0:03Matt O'DowdHOST
This episode is supported by CuriosityStream.
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0:06Matt O'DowdHOST
Quantum field theory is stunningly successful at describing the smallest scales of reality, but its equations are also stunningly complex.
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0:15Matt O'DowdHOST
A lot of the genius in QFT's development was in finding brilliant hacks to make these equations workable.
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0:23Matt O'DowdHOST
The most famous of these are the incredible Feynman diagrams.
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0:33Matt O'DowdHOST
The equations of quantum field theory allow us to calculate the behavior of subatomic particles by expressing them as vibrations in quantum fields.
The Real Star Wars
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18:29Matt O'DowdHOST
at least until we run out of glasses.
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18:32Matt O'DowdHOST
OK, let's get to your comments from last week, when we talked about tricks for solving the impossible equations of quantum field theory.
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18:41Matt O'DowdHOST
Rose's boss noticed that the theoretical electron mass going to infinity sounds a lot like the ultraviolet catastrophe of the pre-Max Planck description of blackbody radiation.
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18:54Matt O'DowdHOST
Well, very, very well spotted.
The Secrets of Feynman Diagrams
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2:48Matt O'DowdHOST
Today, we're going to learn these rules.
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2:51Matt O'DowdHOST
Then you are going to apply them to do some quantum field theory yourself.
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2:57Matt O'DowdHOST
There are space-time t-shirts at stake.
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3:00Matt O'DowdHOST
We're going to stick to quantum electrodynamics, the first and most predictably powerful quantum field theory.
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3:06Matt O'DowdHOST
QED talks about the interaction of the electron field with the electromagnetic field.
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3:12Matt O'DowdHOST
That means interactions between electrons, their antimatter counterparts, the positron, and photons.
9 MINS LATER
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12:21Matt O'DowdHOST
The interpretation of the interactions is irrelevant.
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12:24Matt O'DowdHOST
All we care about is the topology of the diagram.
AaS! 282: What Happens When You Shine a Light on Nothing?
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4:31Paul M. SutterHOST
So the vacuum is not empty.
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4:34Paul M. SutterHOST
It is full of quantum fields.
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4:38Paul M. SutterHOST
And what we call the vacuum is really the ground state of all those fields, their lowest possible energy configuration.
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4:46Paul M. SutterHOST
But this is quantum mechanics.
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4:49Paul M. SutterHOST
Heisenberg's uncertainty principle forbids things from being perfectly still.
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4:54Paul M. SutterHOST
Even in this ground state, even in this lowest possible energy, you get rid of all the particles, you calm everything down, you shh like a librarian on a little patch of vacuum.
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5:05Paul M. SutterHOST
You get the quantum fields to go settle down.
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5:09Paul M. SutterHOST
But like a toddler, they just have a little bit of vibration.
Is It Possible To Make A Black Hole on Earth?
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27:16speaker_1ADVERTISER
Firestone, always dependable, since 1900.
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27:26Alex McColganHOST
But to begin understanding Hawking's theory, we need to understand the idea of quantum fields.
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27:31Alex McColganHOST
In our last video, we asked the question, what is nothing? We explained that light moved like a wave through even a completely empty patch of space, which revealed that there must be something existing even in the nothing, or else light wouldn't be able to wave it.
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27:50Alex McColganHOST
If you want to go back and watch that video, go ahead and follow the link here for a refresher on this idea.
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27:56Alex McColganHOST
But basically, scientists call this fundamental fabric of reality a quantum field.
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28:02Alex McColganHOST
In fact, they believe that there are several quantum fields, all overlapping each other, and all covering every single patch of the universe, be it past, present, or future.
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28:13Alex McColganHOST
Quantum field defines a particular type of something.
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28:17Alex McColganHOST
One field might define all of the electrons in existence, while another may define quarks that make up an atom.
Hirosi Ooguri: Could AI Find Physics We Can’t Understand?
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27:46Hiroshi OoguriGUEST
And, uh, so there, uh, I think, uh, LLM has so far been less effective, although that should, that does not prevent people from using it, uh, because the statement are not as precise as mathematics.
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28:00Hiroshi OoguriGUEST
Uh, for example, even the quantum field theory, which is a fundamental language, uh, of, uh, elementary particle physics, has no firm mathematical foundation.
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28:11Hiroshi OoguriGUEST
And in fact, uh, having establishing that is one of the seven millennium program.
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28:16Hiroshi OoguriGUEST
And many mathematician think that that's actually the hardest, uh, program among seven millennium programs.
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29:16Hiroshi OoguriGUEST
And I think Navier-Stokes was one of the most popular one.
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29:21Hiroshi OoguriGUEST
And indeed, it was solved, uh, after a month or so, right, by OpenAI, and, uh, uh, based on contribution by many f- uh, mathematician before.
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29:32Hiroshi OoguriGUEST
Uh, I, I was told that, uh, Yang, Yang-Mills' program, which is related to the definition of, uh, uh, quantum field theory, was regarded as the least probable program which can be solved immediately.
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29:47Hiroshi OoguriGUEST
Yeah.
Absolute Cold | Space Time
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11:26Matt O'DowdHOST
They would actually take a few thousand years to complete one orbit, so that's still a long wait.
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11:33Matt O'DowdHOST
Robinome, I'm sorry I didn't have more faith in your QFT fu.
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11:38Matt O'DowdHOST
Your criticism of my Lagrangian from the previous week's episode was just about my bad LaTeX fu, not about the equation being wrong.
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11:46Matt O'DowdHOST
I stand corrected
12 more episodes mention Quantum field theory.
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