@qmbphysics.bsky.social
PhD physicist, mainly interested in the quantum many body problem & some AI/ML. I will occasionally post physics stuff. Aka quietphysicist and susurrus1 on other sites.
Maintainer of: @arxiv-nucl-th.bsky.social and @arxiv-nucl-ex.bsky.social
Maintainer of: @arxiv-nucl-th.bsky.social and @arxiv-nucl-ex.bsky.social
Just a hint of pink on the skycam tonight in the northern direction.
November 12, 2025 at 5:03 AM
Just a hint of pink on the skycam tonight in the northern direction.
"Quantum Theory of Angular Momentum" by D. A. Varshalovich et al.
This book is chock-full of useful identities, some that I haven't seen anywhere else. Recommended.
This book is chock-full of useful identities, some that I haven't seen anywhere else. Recommended.
November 11, 2025 at 1:38 AM
"Quantum Theory of Angular Momentum" by D. A. Varshalovich et al.
This book is chock-full of useful identities, some that I haven't seen anywhere else. Recommended.
This book is chock-full of useful identities, some that I haven't seen anywhere else. Recommended.
This evening's skycam view.
November 10, 2025 at 1:48 AM
This evening's skycam view.
The skycam captured a helicopter flying overhead as the streak of light on the right.
November 7, 2025 at 2:21 AM
The skycam captured a helicopter flying overhead as the streak of light on the right.
Reposted
Just found out python supports operator overloading for user-defined objects. Well then *rubs hands*
October 23, 2025 at 11:11 PM
Just found out python supports operator overloading for user-defined objects. Well then *rubs hands*
I want this thing so badly!
source: x.com/EagleAlpha19...
source: x.com/EagleAlpha19...
September 23, 2025 at 2:32 AM
I want this thing so badly!
source: x.com/EagleAlpha19...
source: x.com/EagleAlpha19...
Run!
people over 30 quote this with some life advice for the rest of us?
September 19, 2025 at 11:25 PM
Run!
Today's small victory after days of struggling with Racah algebra and incompatible definitions from different sources.
September 17, 2025 at 6:07 PM
Today's small victory after days of struggling with Racah algebra and incompatible definitions from different sources.
Reposted
New paper: "Back and Forth with Akito Arima", link: https://arxiv.org/abs/2202.00093
September 16, 2025 at 8:15 PM
New paper: "Back and Forth with Akito Arima", link: https://arxiv.org/abs/2202.00093
That's not the convergence behavior I was hoping for from my code. Needs more work...
September 15, 2025 at 11:14 PM
That's not the convergence behavior I was hoping for from my code. Needs more work...
New books have arrived!
September 14, 2025 at 12:06 AM
New books have arrived!
Work in progress.
Now the instructions say I have to insert that little pin at the bottom into a hole in the railing, but in order to do that I have to pull the whole thing apart and undo all the work I just did to make enough room to insert the pin. 🙄
Now the instructions say I have to insert that little pin at the bottom into a hole in the railing, but in order to do that I have to pull the whole thing apart and undo all the work I just did to make enough room to insert the pin. 🙄
August 10, 2025 at 12:20 AM
Work in progress.
Now the instructions say I have to insert that little pin at the bottom into a hole in the railing, but in order to do that I have to pull the whole thing apart and undo all the work I just did to make enough room to insert the pin. 🙄
Now the instructions say I have to insert that little pin at the bottom into a hole in the railing, but in order to do that I have to pull the whole thing apart and undo all the work I just did to make enough room to insert the pin. 🙄
Someone built a giant Lego version of the Agamemnon from Babylon 5 😮
www.youtube.com/watch?v=XJJm...
www.youtube.com/watch?v=XJJm...
Huge LEGO Babylon 5 Earth Alliance Destroyer Agamemnon Spaceship
YouTube video by Beyond the Brick
www.youtube.com
August 1, 2025 at 3:01 AM
Someone built a giant Lego version of the Agamemnon from Babylon 5 😮
www.youtube.com/watch?v=XJJm...
www.youtube.com/watch?v=XJJm...
I remember playing pong when it was still a novelty.
Age verification?
I remember Apollo 11 as it happened.
I remember Apollo 11 as it happened.
July 11, 2025 at 12:54 PM
I remember playing pong when it was still a novelty.
I was going to use an old NUC pc I had lying around to do some light computations that don't need to be constantly supervised.
Unfortunately, it looks like it just died on me. Time to look at other options, maybe an RPi5...
Unfortunately, it looks like it just died on me. Time to look at other options, maybe an RPi5...
July 10, 2025 at 12:59 AM
I was going to use an old NUC pc I had lying around to do some light computations that don't need to be constantly supervised.
Unfortunately, it looks like it just died on me. Time to look at other options, maybe an RPi5...
Unfortunately, it looks like it just died on me. Time to look at other options, maybe an RPi5...
3D printed for my hobby area, came out pretty nicely. Now working on another one to organize the million cables I have lying around.
July 2, 2025 at 3:51 AM
3D printed for my hobby area, came out pretty nicely. Now working on another one to organize the million cables I have lying around.
Reposted
Happy birthday to German-American theoretical #physicist Maria Goeppert Mayer (1906-1972), the 2nd woman to win the Nobel Prize for #physics. 🧪🐡👩🏼🔬 #histsci As the series of increasingly large atomic nuclei grows with additional nucleons (protons p & neutrons n) from hydrogen to transuranic elements 🧵
June 28, 2025 at 12:35 PM
Happy birthday to German-American theoretical #physicist Maria Goeppert Mayer (1906-1972), the 2nd woman to win the Nobel Prize for #physics. 🧪🐡👩🏼🔬 #histsci As the series of increasingly large atomic nuclei grows with additional nucleons (protons p & neutrons n) from hydrogen to transuranic elements 🧵
Reposted
New paper: "Summary Report of the Physics Beyond Colliders Study at CERN", link: https://arxiv.org/abs/2505.00947
June 3, 2025 at 7:00 PM
New paper: "Summary Report of the Physics Beyond Colliders Study at CERN", link: https://arxiv.org/abs/2505.00947
I get my fair share of these on a regular basis, so watch out!
Your state DMV probably won't text you about unpaid fees — but scammers will.
Americans are warned as latest DMV phishing scam targets phones
Your state DMV probably won't text you about unpaid fees — but scammers will.
www.npr.org
May 24, 2025 at 6:32 PM
I get my fair share of these on a regular basis, so watch out!
Last night's skies.
April 30, 2025 at 12:47 AM
Last night's skies.
It was still pretty cloudy last night, but I did capture some star trails.
April 29, 2025 at 1:10 AM
It was still pretty cloudy last night, but I did capture some star trails.
Star trails from my sky cam from a few nights ago, when the sky was relatively clear.
April 25, 2025 at 12:10 AM
Star trails from my sky cam from a few nights ago, when the sky was relatively clear.
Here is my first pass at the enclosure for the skycam. Because it's fairly well sealed (I even have some putty inside where the power cable comes in to keep out insects), I was a bit concerned about overheating. For now, it's just sitting outside while I monitor CPU temperatures, so no pics yet.
April 21, 2025 at 12:09 AM
Here is my first pass at the enclosure for the skycam. Because it's fairly well sealed (I even have some putty inside where the power cable comes in to keep out insects), I was a bit concerned about overheating. For now, it's just sitting outside while I monitor CPU temperatures, so no pics yet.
Experimenting with the Fuzzy Skin setting in Cura as a way of hiding Z-seams and layer lines: it works really well.
#3Dprinting
#3Dprinting
April 17, 2025 at 1:46 AM
Experimenting with the Fuzzy Skin setting in Cura as a way of hiding Z-seams and layer lines: it works really well.
#3Dprinting
#3Dprinting