Rochelle
@uberwensch.bsky.social
like if Just Some Guy was a girl
Pinned
Rochelle
@uberwensch.bsky.social
· May 7
What is entanglement? Itamar Pittowsky claimed that these results brought us right to the precipice of logical contradiction--but not over. Abner Shimoney described it as a piece of "experimental metaphysics." I'm a nobody, but I think entanglement is the most interesting thing ever discovered.
🧵⚛️
🧵⚛️
oh, two is the only even prime? golly! three is the only threeven prime. five is the only fiven prime. pretty cool!
February 14, 2026 at 2:13 PM
oh, two is the only even prime? golly! three is the only threeven prime. five is the only fiven prime. pretty cool!
physicists
February 14, 2026 at 10:18 AM
physicists
has anyone figured out yet whats going on with physics
February 14, 2026 at 3:29 AM
has anyone figured out yet whats going on with physics
Reposted by Rochelle
Flying over Saturn - From Val Klavans (valklavans.bsky.social) - https://flic.kr/p/Ng1pvm
February 13, 2026 at 12:00 PM
Flying over Saturn - From Val Klavans (valklavans.bsky.social) - https://flic.kr/p/Ng1pvm
yes, that is me, I fit that role.
Honestly it has to be bizarre as an actor to see they're casting for "Stunningly gorgeous, impossibly sexy character the protagonist is obsessed with" and correctly think, "yes, that is me, I fit that role." Like at what age do you know that about yourself
February 13, 2026 at 4:40 AM
yes, that is me, I fit that role.
me neither
I don't know how to function in a world that is so continuously cruel.
Where so many will celebrate this pointless, pointless harm. This will devastate a tiny minority. It will benefit no-one.
So many across our country will comply with this violence. So many others will stand silent.
Where so many will celebrate this pointless, pointless harm. This will devastate a tiny minority. It will benefit no-one.
So many across our country will comply with this violence. So many others will stand silent.
February 12, 2026 at 6:55 PM
me neither
i hate quantum fields
Happy birthday to one of my favourite haters, Charles Darwin
February 12, 2026 at 6:41 PM
i hate quantum fields
so the asymptotic hilbert spaces H_in and H_out only describe the stable (possibly composite) particles
we also assume H_in = H_out = H, so any state is labelled only by its (eventual) stable contents
does this mean there is no creation/annihilation operator for e.g. a gluon?
we also assume H_in = H_out = H, so any state is labelled only by its (eventual) stable contents
does this mean there is no creation/annihilation operator for e.g. a gluon?
February 11, 2026 at 4:19 PM
so the asymptotic hilbert spaces H_in and H_out only describe the stable (possibly composite) particles
we also assume H_in = H_out = H, so any state is labelled only by its (eventual) stable contents
does this mean there is no creation/annihilation operator for e.g. a gluon?
we also assume H_in = H_out = H, so any state is labelled only by its (eventual) stable contents
does this mean there is no creation/annihilation operator for e.g. a gluon?
df = (df/dx)dx + (df/dy)dy
after cancellation,
df = df + df
so
df = 0
after cancellation,
df = df + df
so
df = 0
February 11, 2026 at 4:16 PM
df = (df/dx)dx + (df/dy)dy
after cancellation,
df = df + df
so
df = 0
after cancellation,
df = df + df
so
df = 0
tell me IMMEDIATELY if you have seen this woman
February 10, 2026 at 4:48 PM
tell me IMMEDIATELY if you have seen this woman
hey guys. i was incapacitated all day. please, please accept my apologies and submit your #MathCoffeeSelfie below.
February 8, 2026 at 10:59 PM
hey guys. i was incapacitated all day. please, please accept my apologies and submit your #MathCoffeeSelfie below.
Reposted by Rochelle
Those who've followed me for a while will know that I'm doubtful about just how useful the notion of "expanding space" in explaining cosmic expansion is. I think the SciAm article linked here is a good example for where "expanding space" makes things more difficult than they need to be. 🧵 1/
🧪🔭⚛️🎢
🧪🔭⚛️🎢
Near the top of the FAQs I get from curious readers:
How can galaxies collide if the Universe is expanding?
The short answer is: gravity. The longer answer is fun to read, IIDSSM.
www.scientificamerican.com/article/if-t...
🔭 🧪
How can galaxies collide if the Universe is expanding?
The short answer is: gravity. The longer answer is fun to read, IIDSSM.
www.scientificamerican.com/article/if-t...
🔭 🧪
How can galaxies ever collide in an ever-expanding universe?
You might think galaxies can’t ever find each other in our runaway cosmos, but it turns out gravity can sometimes overcome even the stretching of space itself
www.scientificamerican.com
February 6, 2026 at 5:46 PM
Those who've followed me for a while will know that I'm doubtful about just how useful the notion of "expanding space" in explaining cosmic expansion is. I think the SciAm article linked here is a good example for where "expanding space" makes things more difficult than they need to be. 🧵 1/
🧪🔭⚛️🎢
🧪🔭⚛️🎢
how do you pronounce Choquet-Bruhat?
February 6, 2026 at 6:13 AM
how do you pronounce Choquet-Bruhat?
who wants to write a QFT text with me
February 3, 2026 at 11:12 PM
who wants to write a QFT text with me
does make me wonder what the disease vectors are for philosophical zombieism
Submitted an anonymous proposal to my department to teach a course titled "Vectors for Philosophers" and got an email the next day like "this was you weisberg right?"
February 3, 2026 at 12:10 AM
does make me wonder what the disease vectors are for philosophical zombieism
spectral sequences in prison, an analytic solution of einstein's equations in the trenches.... maybe i should get arrested or committed or
I’m sorry but I still can’t get over the fact that the analyst Jean Leray was captured by Nazis in 1940 and knew it was time to become Goblin Wizardman & this is why the world contains sheaves
February 2, 2026 at 5:53 PM
spectral sequences in prison, an analytic solution of einstein's equations in the trenches.... maybe i should get arrested or committed or
This analogy that Witten develops (pages 7-12) is very very helpful to me. He picks extremely concrete, infinite-dimensional systems w inseparable Hilbert spaces and shows what kind of choices & additional data is involved in extracting a choice of separable subspace therefrom
Why Does Quantum Field Theory In Curved Spacetime Make Sense? And What Happens To The Algebra of Observables In The Thermodynamic Limit?
This article aims to explain some of the basic facts about the questions raised in the title, without the technical details that are available in the literature. We provide a gentle introduction to so...
arxiv.org
February 1, 2026 at 11:27 PM
This analogy that Witten develops (pages 7-12) is very very helpful to me. He picks extremely concrete, infinite-dimensional systems w inseparable Hilbert spaces and shows what kind of choices & additional data is involved in extracting a choice of separable subspace therefrom
Reposted by Rochelle
why can we assume that the electron wavefunction is supported in (concentrated in) the green area? in particular, disjointly from the solenoid.
February 1, 2026 at 9:01 PM
why can we assume that the electron wavefunction is supported in (concentrated in) the green area? in particular, disjointly from the solenoid.
Reposted by Rochelle
given that we missed last week, this #MathCoffeeSelfie is a double. send two pictures, tell me what you've been up to twice, and drink 2× the coffee.
February 1, 2026 at 5:17 PM
given that we missed last week, this #MathCoffeeSelfie is a double. send two pictures, tell me what you've been up to twice, and drink 2× the coffee.
refreshing (what has become) the Epstein Files Website, looking at my bookshelf, refreshing again,
February 1, 2026 at 6:57 PM
refreshing (what has become) the Epstein Files Website, looking at my bookshelf, refreshing again,
given that we missed last week, this #MathCoffeeSelfie is a double. send two pictures, tell me what you've been up to twice, and drink 2× the coffee.
February 1, 2026 at 5:17 PM
given that we missed last week, this #MathCoffeeSelfie is a double. send two pictures, tell me what you've been up to twice, and drink 2× the coffee.
Reposted by Rochelle
pressing the button that makes life worth living
January 31, 2026 at 10:43 PM
pressing the button that makes life worth living
would you believe it if i told you that the discussion of ICE on BoardGameGeek.com is... not particularly enlightened
January 31, 2026 at 9:38 PM
would you believe it if i told you that the discussion of ICE on BoardGameGeek.com is... not particularly enlightened
i am under the impression that a lot of people are not moved by Jaynes' arguments (that thermodynamical entropy is information entropy), but what are some good responses to him?
January 31, 2026 at 8:32 PM
i am under the impression that a lot of people are not moved by Jaynes' arguments (that thermodynamical entropy is information entropy), but what are some good responses to him?