The Unexpected Reason Antimatter Exists | Quantum Tunneling and Special Relativity

Have you ever wondered why antimatter exists? Why do all particles have their own mysterious antiparticle twins? It turns out there's a very good reason it exists, but it might not be what you expect...

If you want to learn a bit about quantum tunneling, special relativity and how these things connect to antimatter, then watch this video!
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Shots In The Quark is a physics channel run by me (cosmology PhD student Matt Davies). My aim is to explain some of the most advanced, cutting-edge ideas in theoretical physics and philosophy of physics in a way that's accessible to everyone.

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You can find out more about Relativity and Quantum Mechanics in these other Shots In The Quark videos:
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#physics #antimatter #quantum
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00:00 Introduction
00:53 What is Antimatter?
02:11 Quantum Tunnelling
05:53 Special Relativity
08:09 Quantum Field Theory - Propagators
09:51 Why we need Antimatter

[JohnSmith-pddq]

Fantasitic! ... well done ... and thank you for such a awonfderful letture ... please carry on ... never stop ...

[zharul]

Thank you for making this video. You are able to deliver some insight in understanding quantum mechanics to casual watchers like me.

[lucasjones]

Super interesting! Love your work, keep it up

[kirillpervushyn]

So I take it as a purely mathematical deriviation of need in Antimatter. We need it (spoiler alert) just to cancel out a probability of escaping Light-cone within our domain of mathematics.

I totally get it that math is a universal language (providing that we apply correct model to correct space), and this deriviation PREDICTS the existance of Antimatter.
But it doesn't explain because of what it exists. This is the problem in English "why" - it means both "for what" and "because of what".

Also I'm not sure that applying the Well model to Light-cone is appropriate, since Well-model is more about space destribution of probability.
But here you'll say that there is no reason why it's not working for time as well?


Anyway, great videos and interesting topics, thank you.
Glad you've rebooted and continue popularizing science - especially appreciated by people who left science but miss its sence of wonder

[farzamimran]

amazing video but why does the wave function squared give us the probability why not just a normal wave function why do we have to square it

[fluoroantimonic]

So antiparticles exist just to hold the laws of Special Relativity? Is this the only reason why antiparticles exist? When did they first come into existence?Do they appear inly when they need to or is it probabilistic?

[Andrew]

So if photons are their own antiparticles, why don't two photons annihilate each other when they meet?

[suchiiswarpaudmanabhan]

So if the wave functions of two particles are in the same place do they have a chance to end up in the same place? What happens then

[gameupcity]

High school science ed (at least at my high school) was generally trash, so I didn't realize how awesome and fascinating physics is until years later as an adult. I've been deep-diving science communicator videos like yours for several years now, and though the math is always over head head, I've been able to put together - in my own brain, at least - a layman's understanding of how some of these complex features work together. This was by far the best explanation of the relationship between matter and antimatter that I've come across in those years. You're doing awesome things to help folks like me understand our universe just a little bit better - so thank you, and please keep it up!

[kevint.]

Why is there a "classically forbidden" region at all? Why isn't the entirety of the wave function in the well?

[fluoroantimonic]

So antiparticles exist just to hold the laws of Special Relativity? Is this the only reason why antiparticles exist? When did they first come into existence?Do they appear inly when they need to or is it probabilistic?