Really really glad I can do all my meetings today on Zoom!
Blue = "travel not recommended"
Red = "road closed"
There were some giant drifts out in the barnyard which the goats were extremely annoyed about climbing over (come on, you're GOATS! You can climb over things!) But I still have power despite all the wind, so yay, work from home day (with kids home too, since the buses aren't running)
=> More informations about this toot | More toots from sundogplanets@mastodon.social
One of my meetings is the first PhD committee meeting for a student doing particle physics. I am now frantically googling all the words in the title of her first paper because although I am a professor in a physics department, physics is HUGE and this is WAY outside what I study.
Ok what the hell is a parton... no not Dolly, thanks DDG... https://en.wikipedia.org/wiki/Parton_(particle_physics)
Oh a thing with lots of hard math that Feynman proposed. Boy it's going to be a long day.
=> More informations about this toot | More toots from sundogplanets@mastodon.social
"Sea quarks"?! Now you're just making stuff up. Quantum mechanics is ridiculous.
=> More informations about this toot | More toots from sundogplanets@mastodon.social
@sundogplanets The confinement in non-Abelian QFTs like QCD makes the insides of mesons and hadrons really weird!
=> More informations about this toot | More toots from dgoldsmith@mastodon.social
@dgoldsmith There was some talk about QCD in the thesis intro...I did not understand it! I like rocks. Big, cold rocks. This is way too abstract! (Super interesting, but wow)
=> More informations about this toot | More toots from sundogplanets@mastodon.social
@sundogplanets Without getting into the group theory the main difference between QED (electromagnetism) and QCD (strong nuclear force) is that photons don't have an electric charge, but gluons do have a color charge. That's what leads to confinement: the "lines of force," instead of spreading out as in QED, attract each other, so they form tubes that act like rubber bands. That's why you get quark confinement: if you try to pull them apart you just make more quarks from the energy! 1/2
=> More informations about this toot | More toots from dgoldsmith@mastodon.social
@sundogplanets Inside a meson (two quarks) or hadron (three quarks) instead of a tube you have something like a sack which, in addition to the real quarks, is full of virtual gluons and virtual quarks—these latter are the "sea quarks." Basically, because gluons interact with each other you always get closed structures with net zero color charge and a lot going on inside.
Yes, QM and QFT are definitely weird, but also very beautiful and interesting. As are big cold rocks! 2/2
=> More informations about this toot | More toots from dgoldsmith@mastodon.social This content has been proxied by September (ba2dc).Proxy Information
text/gemini
