David Rousseau
@dhpmrou.bsky.social
Particle Physicist at IJCLab-Orsay, ATLAS experiment at CERN.
Higgs Boson and AI.
#ML competitions and open datasets Higgsml, TrackML, and now Fair Universe Higgsml Uncertainties
#ai4science
Higgs Boson and AI.
#ML competitions and open datasets Higgsml, TrackML, and now Fair Universe Higgsml Uncertainties
#ai4science
⚛️ @kylecranmer.bsky.social , have you seen this brewing ?
arxiv.org/abs/2601.02484
Yes, it's that Schwartz -- QFT textbook author -- writing a paper wherein "All calculations, numerical analysis, and manuscript preparation were performed by Claude, an AI assistant developed by Anthropic, working under physicist supervision."
Yes, it's that Schwartz -- QFT textbook author -- writing a paper wherein "All calculations, numerical analysis, and manuscript preparation were performed by Claude, an AI assistant developed by Anthropic, working under physicist supervision."
Resummation of the C-Parameter Sudakov Shoulder Using Effective Field Theory
The C-parameter distribution in $e^+e^-$ annihilation exhibits a kinematic shoulder at $C = 3/4$, where three-parton final states reach their maximum and a fourth parton is required to exceed it. This...
arxiv.org
January 8, 2026 at 5:29 PM
⚛️ @kylecranmer.bsky.social , have you seen this brewing ?
Reposted by David Rousseau
arxiv.org/abs/2601.02484
Yes, it's that Schwartz -- QFT textbook author -- writing a paper wherein "All calculations, numerical analysis, and manuscript preparation were performed by Claude, an AI assistant developed by Anthropic, working under physicist supervision."
Yes, it's that Schwartz -- QFT textbook author -- writing a paper wherein "All calculations, numerical analysis, and manuscript preparation were performed by Claude, an AI assistant developed by Anthropic, working under physicist supervision."
Resummation of the C-Parameter Sudakov Shoulder Using Effective Field Theory
The C-parameter distribution in $e^+e^-$ annihilation exhibits a kinematic shoulder at $C = 3/4$, where three-parton final states reach their maximum and a fourth parton is required to exceed it. This...
arxiv.org
January 8, 2026 at 4:21 AM
arxiv.org/abs/2601.02484
Yes, it's that Schwartz -- QFT textbook author -- writing a paper wherein "All calculations, numerical analysis, and manuscript preparation were performed by Claude, an AI assistant developed by Anthropic, working under physicist supervision."
Yes, it's that Schwartz -- QFT textbook author -- writing a paper wherein "All calculations, numerical analysis, and manuscript preparation were performed by Claude, an AI assistant developed by Anthropic, working under physicist supervision."
Sounds like a crazy idea, but I was almost convinced after reading the full post.
1. My new preprint has its own bluesky account. Why? The problems facing social media & scientific publishing are similar: both are dominated by powerful oligopolies. The @atproto.com tech underlying bluesky that aims to solve the social media prob might also help solve the scientific pub prob 🧪 🧵
1. Preprint: Menopause averted a midlife energetic crisis with help from older children and parents: A simulation study. zenodo.org/records/1814...
Menopause is rare, known to occur only in humans and toothed whales: 🧵
Menopause is rare, known to occur only in humans and toothed whales: 🧵
January 7, 2026 at 5:37 AM
Sounds like a crazy idea, but I was almost convinced after reading the full post.
This 👇 !!!
The main reason I am procrastinating my peer reviews is how hard it is to log in to the journal's system.
The journal sends me a link to access the manuscript, but more often than not, it returns an "Incorrect User ID or Password" error, even though my password manager saved the login.
/
The journal sends me a link to access the manuscript, but more often than not, it returns an "Incorrect User ID or Password" error, even though my password manager saved the login.
/
January 2, 2026 at 11:26 PM
This 👇 !!!
#Birding2025 Recap 181 species, my 2nd best year since 2014, even without trips to Brittany, Provence, Jura, or Corsica!
Made the most of local patches and Niort (my home town)
A few puzzling misses: Fieldfare and Red Kite.
Highlights of the year:
#birds
1/7
Made the most of local patches and Niort (my home town)
A few puzzling misses: Fieldfare and Red Kite.
Highlights of the year:
#birds
1/7
January 1, 2026 at 5:54 PM
#Birding2025 Recap 181 species, my 2nd best year since 2014, even without trips to Brittany, Provence, Jura, or Corsica!
Made the most of local patches and Niort (my home town)
A few puzzling misses: Fieldfare and Red Kite.
Highlights of the year:
#birds
1/7
Made the most of local patches and Niort (my home town)
A few puzzling misses: Fieldfare and Red Kite.
Highlights of the year:
#birds
1/7
Superb #viili made with Révolution Fermentation cultures!
(Plus a bit of goat-cheese Geotrichum for that “skin”)
A Finnish yogurt that ferments at room temperature in 24 hours.
Delicious on its own, with honey, muesli, or fresh fruit.
1/2
(Plus a bit of goat-cheese Geotrichum for that “skin”)
A Finnish yogurt that ferments at room temperature in 24 hours.
Delicious on its own, with honey, muesli, or fresh fruit.
1/2
December 30, 2025 at 5:11 PM
Superb #viili made with Révolution Fermentation cultures!
(Plus a bit of goat-cheese Geotrichum for that “skin”)
A Finnish yogurt that ferments at room temperature in 24 hours.
Delicious on its own, with honey, muesli, or fresh fruit.
1/2
(Plus a bit of goat-cheese Geotrichum for that “skin”)
A Finnish yogurt that ferments at room temperature in 24 hours.
Delicious on its own, with honey, muesli, or fresh fruit.
1/2
I need some positivity. Quote or reply with your favorite bike memory of 2025. It can be a great ride, an advocacy accomplishment, whatever. Let's celebrate bikes.
My personal favorite was finally doing a bikepacking ride up to Portland, Maine! It has me excited for bigger adventures in 2026.
My personal favorite was finally doing a bikepacking ride up to Portland, Maine! It has me excited for bigger adventures in 2026.
December 30, 2025 at 2:00 PM
Reposted by David Rousseau
buttons coming back, shitty door handles slowly being made illegal, now just make cars small again and we’ll be getting somewhere
Amazingly, reaction times using screens while driving are worse than being drunk or high—no wonder 90 percent of drivers hate using touchscreens in cars. Finally the auto industry is coming to its senses.
Rejoice! Carmakers Are Embracing Physical Buttons Again
Amazingly, reaction times using screens while driving are worse than being drunk or high—no wonder 90 percent of drivers hate using touchscreens in cars. Finally the auto industry is coming to its…
wrd.cm
December 28, 2025 at 8:11 AM
buttons coming back, shitty door handles slowly being made illegal, now just make cars small again and we’ll be getting somewhere
I'm fascinated by this specific point, NO of USA, where North Two Oceans creek splits, one branch flowing to the Pacific and the other one to the Atlantic.
Lewis and Clark did not pass far from there.
Lewis and Clark did not pass far from there.
December 25, 2025 at 9:28 AM
I'm fascinated by this specific point, NO of USA, where North Two Oceans creek splits, one branch flowing to the Pacific and the other one to the Atlantic.
Lewis and Clark did not pass far from there.
Lewis and Clark did not pass far from there.
Oh, I may have found a bug!
The Red River and the Atchafalaya appear disconnected from the Mississippi, while Red River is a tributary of the Mississippi, and Atchafalaya is a distributary (yes, that's a word) of the Mississippi.
Natural but heavily human-managed nowadays.
Interesting...
The Red River and the Atchafalaya appear disconnected from the Mississippi, while Red River is a tributary of the Mississippi, and Atchafalaya is a distributary (yes, that's a word) of the Mississippi.
Natural but heavily human-managed nowadays.
Interesting...
December 25, 2025 at 9:15 AM
Oh, I may have found a bug!
The Red River and the Atchafalaya appear disconnected from the Mississippi, while Red River is a tributary of the Mississippi, and Atchafalaya is a distributary (yes, that's a word) of the Mississippi.
Natural but heavily human-managed nowadays.
Interesting...
The Red River and the Atchafalaya appear disconnected from the Mississippi, while Red River is a tributary of the Mississippi, and Atchafalaya is a distributary (yes, that's a word) of the Mississippi.
Natural but heavily human-managed nowadays.
Interesting...
Thanks! The Casiquiare (natural) channel connects the Amazon Basin with the Orinoco Basin, North of South America.
December 23, 2025 at 1:14 PM
Thanks! The Casiquiare (natural) channel connects the Amazon Basin with the Orinoco Basin, North of South America.
My friend Marco Delmastro (not on BS) was clearly bored with #AdventOfCode day7 he's done this very nice animation github.com/marcodelmast...
December 8, 2025 at 2:30 PM
My friend Marco Delmastro (not on BS) was clearly bored with #AdventOfCode day7 he's done this very nice animation github.com/marcodelmast...
I've completed "Playground" - Day 8 - Advent of Code 2025 #AdventOfCode adventofcode.com/2025/day/8
When you solve Part 2 in a few seconds, is it a sign you've overdone Part 1?
When you solve Part 2 in a few seconds, is it a sign you've overdone Part 1?
Day 8 - Advent of Code 2025
adventofcode.com
December 8, 2025 at 2:27 PM
I've completed "Playground" - Day 8 - Advent of Code 2025 #AdventOfCode adventofcode.com/2025/day/8
When you solve Part 2 in a few seconds, is it a sign you've overdone Part 1?
When you solve Part 2 in a few seconds, is it a sign you've overdone Part 1?
I just completed "Cafeteria" - Day 5 - Advent of Code 2025 #AdventOfCode adventofcode.com/2025/day/5
First time I'm doing it seriously, this is fun!
Main lesson, unit tests of course, but even better:
building a randomised simple test, easier to debug than the full task.
First time I'm doing it seriously, this is fun!
Main lesson, unit tests of course, but even better:
building a randomised simple test, easier to debug than the full task.
Day 5 - Advent of Code 2025
adventofcode.com
December 6, 2025 at 4:55 PM
I just completed "Cafeteria" - Day 5 - Advent of Code 2025 #AdventOfCode adventofcode.com/2025/day/5
First time I'm doing it seriously, this is fun!
Main lesson, unit tests of course, but even better:
building a randomised simple test, easier to debug than the full task.
First time I'm doing it seriously, this is fun!
Main lesson, unit tests of course, but even better:
building a randomised simple test, easier to debug than the full task.
Nyhavn Copenhagen!
30 years ago, I splurged on a herring buffet during a bike trip from Paris.
Today, I’m genuinely excited that the upcoming #EuRIPS might actually top the full San Diego #NeurIPS experience.
Ragansu will show our “Fair Universe” poster
Who else will be there ?
30 years ago, I splurged on a herring buffet during a bike trip from Paris.
Today, I’m genuinely excited that the upcoming #EuRIPS might actually top the full San Diego #NeurIPS experience.
Ragansu will show our “Fair Universe” poster
Who else will be there ?
December 1, 2025 at 7:02 PM
These Christmas baubles won’t be decorating a tree, they’ll be submerged deep in the Mediterranean to detect neutrinos from space for @km3net.bsky.social experiment.
Thanks Antonin Vacheret for the visit.
@lpccaen.bsky.social
Thanks Antonin Vacheret for the visit.
@lpccaen.bsky.social
November 27, 2025 at 12:13 PM
These Christmas baubles won’t be decorating a tree, they’ll be submerged deep in the Mediterranean to detect neutrinos from space for @km3net.bsky.social experiment.
Thanks Antonin Vacheret for the visit.
@lpccaen.bsky.social
Thanks Antonin Vacheret for the visit.
@lpccaen.bsky.social
Almost moved to see these students, who, back in January, were just CVs among a thousand applying to the COFUND #DeMythif.AI program at @univparissaclay.bsky.social (with @dataiainstitute.bsky.social ).
A beautiful start to their PhD journey on AI, uncertainty, and science!
A beautiful start to their PhD journey on AI, uncertainty, and science!
The new #DeMythif.AI promotion is starting today. It is such a pleasure to meet the 16 students of the program in @univparissaclay.bsky.social and @dataiainstitute.bsky.social !
November 11, 2025 at 1:11 AM
Almost moved to see these students, who, back in January, were just CVs among a thousand applying to the COFUND #DeMythif.AI program at @univparissaclay.bsky.social (with @dataiainstitute.bsky.social ).
A beautiful start to their PhD journey on AI, uncertainty, and science!
A beautiful start to their PhD journey on AI, uncertainty, and science!
So cool to see this!
📢𝐉𝐨𝐛 𝐚𝐥𝐞𝐫𝐭: Postdoc position(s) in 𝐀𝐈 𝐟𝐨𝐫 𝐟𝐮𝐧𝐝𝐚𝐦𝐞𝐧𝐭𝐚𝐥 𝐩𝐡𝐲𝐬𝐢𝐜𝐬 focusing on either 𝐬𝐭𝐚𝐭𝐢𝐬𝐭𝐢𝐜𝐚𝐥 𝐢𝐧𝐟𝐞𝐫𝐞𝐧𝐜𝐞 or 𝐀𝐈-𝐚𝐬𝐬𝐢𝐬𝐭𝐞𝐝 𝐭𝐡𝐞𝐨𝐫𝐲.
🏙️Join my new group at 𝐆𝐞𝐨𝐫𝐠𝐢𝐚 𝐓𝐞𝐜𝐡, based in 𝐰𝐨𝐧𝐝𝐞𝐫𝐟𝐮𝐥 𝐌𝐢𝐝𝐭𝐨𝐰𝐧 𝐀𝐭𝐥𝐚𝐧𝐭𝐚!
🗓️ Reviews begin sooner, deadline: 𝟓𝐭𝐡 𝐃𝐞𝐜𝐞𝐦𝐛𝐞𝐫
💬 Questions: Reach out!
🔗 inspirehep.net/jobs/2962185
🏙️Join my new group at 𝐆𝐞𝐨𝐫𝐠𝐢𝐚 𝐓𝐞𝐜𝐡, based in 𝐰𝐨𝐧𝐝𝐞𝐫𝐟𝐮𝐥 𝐌𝐢𝐝𝐭𝐨𝐰𝐧 𝐀𝐭𝐥𝐚𝐧𝐭𝐚!
🗓️ Reviews begin sooner, deadline: 𝟓𝐭𝐡 𝐃𝐞𝐜𝐞𝐦𝐛𝐞𝐫
💬 Questions: Reach out!
🔗 inspirehep.net/jobs/2962185
INSPIRE
inspirehep.net
November 10, 2025 at 7:07 PM
So cool to see this!
Ah so, thanks to LLM’s, arXiv is becoming a postprint server
Another casualty of the LLM revolution.
In "arXiv’s CS category, review articles and position papers must now be accepted at a journal or a conference and complete successful peer review."
In "arXiv’s CS category, review articles and position papers must now be accepted at a journal or a conference and complete successful peer review."
Attention Authors: Updated Practice for Review Articles and Position Papers in arXiv CS Category – arXiv blog
blog.arxiv.org
November 2, 2025 at 8:42 AM
Ah so, thanks to LLM’s, arXiv is becoming a postprint server
#289 and #290 France lifers in 15'!
So a White-winged Black Tern had been reported for a week on Lake Saint-Quentin-en-Yvelines near Paris.
I drive there, en route I get a note "Near the eastern dam!", I park there, set up the scope and there it is, spectacular black and white pattern!
#birds
1/3
So a White-winged Black Tern had been reported for a week on Lake Saint-Quentin-en-Yvelines near Paris.
I drive there, en route I get a note "Near the eastern dam!", I park there, set up the scope and there it is, spectacular black and white pattern!
#birds
1/3
October 25, 2025 at 8:40 PM
#289 and #290 France lifers in 15'!
So a White-winged Black Tern had been reported for a week on Lake Saint-Quentin-en-Yvelines near Paris.
I drive there, en route I get a note "Near the eastern dam!", I park there, set up the scope and there it is, spectacular black and white pattern!
#birds
1/3
So a White-winged Black Tern had been reported for a week on Lake Saint-Quentin-en-Yvelines near Paris.
I drive there, en route I get a note "Near the eastern dam!", I park there, set up the scope and there it is, spectacular black and white pattern!
#birds
1/3
Particle physicists be like
October 25, 2025 at 8:08 PM
Particle physicists be like
As an associated editor for EPJC, CSBS before, I always search for referees with private emails, and only then I formalise the invite on the official platform.
Last time, an editor was complaining I was not doing anything because he was not seeing any activity on the platform...
1/3
#academiclife
Last time, an editor was complaining I was not doing anything because he was not seeing any activity on the platform...
1/3
#academiclife
October 22, 2025 at 10:19 AM
As an associated editor for EPJC, CSBS before, I always search for referees with private emails, and only then I formalise the invite on the official platform.
Last time, an editor was complaining I was not doing anything because he was not seeing any activity on the platform...
1/3
#academiclife
Last time, an editor was complaining I was not doing anything because he was not seeing any activity on the platform...
1/3
#academiclife
My bank notified me of a suspicious charge on my card. Turns out it was fraud. Had to block it and order a new one.
The merchant? HIGGSFIELD.inc 🤨
Coincidence, I think not!
The merchant? HIGGSFIELD.inc 🤨
Coincidence, I think not!
HIGGFIELD.in
October 21, 2025 at 1:51 PM
My bank notified me of a suspicious charge on my card. Turns out it was fraud. Had to block it and order a new one.
The merchant? HIGGSFIELD.inc 🤨
Coincidence, I think not!
The merchant? HIGGSFIELD.inc 🤨
Coincidence, I think not!
So many years on Twitter, without seeing a single baseball tweet, but on Bluesky, they keep popping up?
Puzzled...
Puzzled...
October 14, 2025 at 6:30 PM
So many years on Twitter, without seeing a single baseball tweet, but on Bluesky, they keep popping up?
Puzzled...
Puzzled...