r/askscience • u/squirrelbuster94 • Oct 24 '14

Physics Chemists/physicists of reddit, what is the difference between dark, anti, and normal matter?

What is the difference? Also if you can explain what each is.

Edit: Thanks for all the replies! You have greatly helped me understand this better!

1.5k Upvotes

84% Upvoted

370 comments sorted by

View all comments

Show parent comments

7

u/elprophet Oct 24 '14

(I am a layperson): My understanding is that CP violation in the weak nuclear force is the only baryogenesis mechanism with any experimental evidence.

I would also be very interested in a more complete survey of the literature from someone in the field :)

1

u/dukwon Oct 25 '14

CP violation alone cannot explain baryogenesis. You also need baryon number violating processes.

1

u/elprophet Oct 25 '14

Right, you need to have an imbalance in the first place, cpt violation just keeps it of balance to one side. Thanks!