24 Subatomic Stories: Where's all the antimatter?

Einstein’s equation E = mc^2 and the theory of the Big Bang are both generally accepted physics theories and yet, between them, they make an unphysical prediction. They predict that matter and antimatter should be observed in equal quantities. Yet the universe is made only of matter. Why is that? In this episode of Subatomic Stories, Fermilab’s Dr. Don Lincoln explains what is going on.

Leptogenesis video:

Sean Carroll’s blog on why dark energy causes the universe to expand:

Ethan Siegel’s post on why the expansion of the universe doesn’t expand the Milky Way:

Fermilab physics 101:

Fermilab home page:

Virgo Cluster image credit
R. Gendler (Copyright Robert Gendler 2006)

[FreshBeatles]

i hope u guys dont stop making videos for all of us who still care about physics

[Luqueuris]

For a while it seems subatomic stories aren't so subatomic anymore. And I love how it's getting to be about all those other scales of Physics as well, after all, Physics Is Everything! <3

[sapelesteve]

Another terrific video Dr. Don & thanks for answering my posted question! I'm certain that I will have more questions for you in the 😉😉👍

[rollinwithunclepete]

Very droll.... I look forward to Subatomic Stories every week! They are short, punchy and understandable. Kudos Dr Don et al!

[realdarthplagueis]

Thank you Fermilab and Dr. Lincoln. This channel and PBS Space Time is a weekly high for me.

[jeffholland]

Of all the knowledge laid down here (which I do appreciate) I want to bring special attention to your humor. Knowledge and laughs. Love your delivery! You remind me of my favorite teacher from high school.

[jacobdrj]

I have to say, I prefer the new post-covid format of your videos. Bravo. Keep these coming :)

[drdeesnutts]

"The universe was once more smaller and hotter"
Weren't we all?

[fensoxx]

Dr. Don you are a national treasure, thank you for this work!

[Miata]

The pandemic and people working from home has led to a great deal of innovative and compelling content on YouTube. I count this series among those that have blossomed this year. I hope the series can continue even as we return to normal, whatever _that_ is.

[quiversky]

I've read and heard much of this before, but I love how everyone who talks about these idess explains them in a different way. This is why I never tire of hearing them :)

[purshottamsingh]

I attended your "Einstein's Unfinished Dream" Webinar at 5:00 am in India. It was amazing and has increased my curiosity towards the cosmos.

[faruqhsj]

Great service for the entire humanity of the world of so many diverse countries and nations.
Thank you so much dear teams of @Fermilabs.

[NicleT]

Really appreciate all of your videos. Thank you and your _team_ for doing them.

[jdin]

This is the golden, there hasn't been a subatomic stories episode as this one... so funny.

[xxx]

That’s really informative. Big fan of your videos.
Please increase the session lengths if possible for more info😊
One quick question is there any substantial proof that ratio mismatch (3b and 3.1b) ? Could it be possible that it did not happen at all ? If yes then where would the theory point to.

[barryomahony]

Yes we're having a blast. Please keep it up

[gworfish]

Now I want to see a duel between Dr. Don and the Emperor.

[kennethhicks]

The simplest (best) explanation of E and M and the antimatter catastrophe ; )
Ty

[JEE]

How can dark energy increase over time if we consider laws of thermodynamics?thank you .
Please post the zoom webinar held on 6 sept.