I wanted to think of a galilei-covariant classical field equation, to understand quantization of fields without some relativistic issues coming in. But I don't think there are any ovservable, galilei-covariant, classical fields!

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The New York Times: Boycott, Divest, Unsubscribe

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cait (and adonis)@cait.bsky.social · 2d ago

here's a fun lil exercise for cis people: how many articles would a publication have to print calling for your extermination before you would expect people who care about you to stop giving them money? and how would you feel if their excuse for still supporting them is some fuckass crossword puzzle?

I was wondering, for say the EM or the Dirac field, why not just quantize the algebra of gauge-invariant quantities directly. Ofc, if you do that, then you can't couple them together properly... Its like the two systems have more DoF together than they had separately

sorry, I was asleep all day today

starting reading this great novel about PDEs and their symmetries, Infinite Jets

Do you guys think I could sell this for a lot of money

cryogenically freezing myself until white women can wear a qipao

sometimes I am sad that early humans didn't have cheese and then i am even more sad about whatever it that i don't have

It is July 26. I am posting the #MathCoffeeSelfie thread. It is May 17. I am posting the #MathCoffeeSelfie thread. It is September 27. I am posting the #MathCoffeeSelfie thread.

It is July 26. I am posting the #MathCoffeeSelfie thread. It is May 17. I am posting the #MathCoffeeSelfie thread. It is September 27. I am posting the #MathCoffeeSelfie thread.

I met someone from Winnipeg who had a tattoo of Confusion Corner

Sunsette / Cynthia Skye@sunderedmarches.com · 2w ago

Urban planners will talk about a city like, "this is a great example of how planning can make a city usable for residents" and then the city will have a 7-way intersection widely known as The Calamity where half the roads are one-ways, cyclists come out of an unmarked bush, and there are no lamps.

i think i understand physics pretty well. im just a little iffy on QFT, actually NRQM too, and thermodynamics, stat mech, SR, GR, even classical mech and im not quite sure i get locality, symmetry, gauge, mass, space, time, force, inertia, motion, heat, work, entropy, temperature, particles, fields,

Justice for Jonathan Weisberg

julia 🦂@hypv.bsky.social · 2w ago

all the important news and issues facing the academy: the time someone skeeted an insult about a collaborator in an exterminationist campaign

The Swiss Cheese solution to Theodicy: None of that stuff happened. Spacetime is full of holes, like swiss cheese. The only things that actually happen are the memories of bad stuff having happened. Every bad thing is absent from reality.

*getting to the last page of my book* "...and so, it was. A String Theory."

before i do anything i quickly google ' laws" just in case

this hit so hard the other night when I was a little drunk

Rochelle@uberwensch.bsky.social · 2w ago

one of my biggest fears is fear itself, I'm afraid.

i communed with the goddess that ramanujan spoke of, and she also just told me a bunch of crazy sums. strange lady.

one of my biggest fears is fear itself, I'm afraid.

one of the main things i would do if i could is anything. if i could do anything, that's what I'd do.

you'd better believe it's 5 o'clock somewhere everywhere

hit the inflection point where its more efficient to download all the papers I _don't_ want to read, leave the rest on arxiv

things happening together are coincidental, even if its causally explained. thats what "coincide" means.

Vinyl records are a genuinely bonkers technology why the hell does that actually work

> You find yourself in a dark room. > There is a woman there, but you > can't discern much. You could: [ show her a #MathCoffeeSelfie ] [ tell her about your day ] [ USE your STEAMED HAM on her ]

> You find yourself in a dark room. > There is a woman there, but you > can't discern much. You could: [ show her a #MathCoffeeSelfie ] [ tell her about your day ] [ USE your STEAMED HAM on her ]

PG Clucks has closed, and everything is worse now.

My landlord is out on the corner, with a tin can. I move to drop a few rent payments into it. "Don't bother," urges my friend, "he's just going to spend it on boats."

read some tweets from this time last year and its crazy how much more I know now

Hold on. This basic problem here, that spacetime points have no identity across models or counterfactuals, infects the idea of gravitational waves... doesn't it? Is there a unique way of constructing the flat spacetime against which 'waving' is measured? Is it coordinate-dependent? Does it matter?

Gregor@coexact.bsky.social · 4mo ago

the paper by Geroch which he cites has the same limit λ→0 but doesn't call it 'shrinking the mass' which just seems confused? though I agree that counterfactuals like this are difficult in GR, but am not sure whether more so than in other gauge theories