Andrea Idini
@nuclearidini.bsky.social
Nuclear physicist, teacher, explorer of the north, European dream believer.
Modeling quantum stuff with supercomputers and having fun @LundUniversity, Sweden.
Modeling quantum stuff with supercomputers and having fun @LundUniversity, Sweden.
This research advances our understanding of nuclear reactions. I hope this will also help to figure out open questions in models of astrophysical phenomena like stellar burning and nucleosynthesis, maybe even experiment design, and especially applications.
8/n
8/n
November 17, 2025 at 10:15 AM
This research advances our understanding of nuclear reactions. I hope this will also help to figure out open questions in models of astrophysical phenomena like stellar burning and nucleosynthesis, maybe even experiment design, and especially applications.
8/n
8/n
I think it is pretty convincing that the vibrations and rotations that the nucleus does when kicked a little bit are the most important features to consider, even though we need to study and play with this tool much more. And now that we can!
7/n
7/n
November 17, 2025 at 10:15 AM
I think it is pretty convincing that the vibrations and rotations that the nucleus does when kicked a little bit are the most important features to consider, even though we need to study and play with this tool much more. And now that we can!
7/n
7/n
This is a sort of "shotgun approach": trying many things and see what works. The drawback is that we have to generalize the Schrodinger equation and it sounds very complicated, but the advantage is that you don't have to commit to a single shape, making it ultimately faster.
(4/n)
(4/n)
November 17, 2025 at 10:15 AM
This is a sort of "shotgun approach": trying many things and see what works. The drawback is that we have to generalize the Schrodinger equation and it sounds very complicated, but the advantage is that you don't have to commit to a single shape, making it ultimately faster.
(4/n)
(4/n)
The main idea is that since the nucleus is a complicated object, we define all possible shapes a given nucleus might have and see how probable it is that the nucleus has that shape at a given moment.
Maybe its wavefunction is a superposition of pancake flat & rugby ball!
(3/n)
Maybe its wavefunction is a superposition of pancake flat & rugby ball!
(3/n)
November 17, 2025 at 10:15 AM
The main idea is that since the nucleus is a complicated object, we define all possible shapes a given nucleus might have and see how probable it is that the nucleus has that shape at a given moment.
Maybe its wavefunction is a superposition of pancake flat & rugby ball!
(3/n)
Maybe its wavefunction is a superposition of pancake flat & rugby ball!
(3/n)
This is called a scattering problem, and it is way harder than it sounds. Basically, the neutron will probably bounce off the nucleus, but to calculate how probable a specific bounce trajectory is you would need to have a near perfect description of the nucleus as a whole.
(2/n)
(2/n)
November 17, 2025 at 10:15 AM
This is called a scattering problem, and it is way harder than it sounds. Basically, the neutron will probably bounce off the nucleus, but to calculate how probable a specific bounce trajectory is you would need to have a near perfect description of the nucleus as a whole.
(2/n)
(2/n)
We just published a new paper about a totally new method to compute neutron scattering.
The problem is deceptively simple: what happens when you throw a neutron against an atomic nucleus? If we throw many neutrons, how many will bounce off without exchanging energy?
(1/9)
#academicsky #physics
The problem is deceptively simple: what happens when you throw a neutron against an atomic nucleus? If we throw many neutrons, how many will bounce off without exchanging energy?
(1/9)
#academicsky #physics
November 17, 2025 at 10:15 AM
We just published a new paper about a totally new method to compute neutron scattering.
The problem is deceptively simple: what happens when you throw a neutron against an atomic nucleus? If we throw many neutrons, how many will bounce off without exchanging energy?
(1/9)
#academicsky #physics
The problem is deceptively simple: what happens when you throw a neutron against an atomic nucleus? If we throw many neutrons, how many will bounce off without exchanging energy?
(1/9)
#academicsky #physics
July 24, 2025 at 3:55 PM
I'm becoming more cynical everyday:
3 researchers make an AI application, with invented references, all three cleared of any guilt because pointing at each other as the culprit.
This place is unbelievable...
www.sydsvenskan.se/2025-05-07/f...
#academicsky #lund #sweden
3 researchers make an AI application, with invented references, all three cleared of any guilt because pointing at each other as the culprit.
This place is unbelievable...
www.sydsvenskan.se/2025-05-07/f...
#academicsky #lund #sweden
May 8, 2025 at 6:19 AM
I'm becoming more cynical everyday:
3 researchers make an AI application, with invented references, all three cleared of any guilt because pointing at each other as the culprit.
This place is unbelievable...
www.sydsvenskan.se/2025-05-07/f...
#academicsky #lund #sweden
3 researchers make an AI application, with invented references, all three cleared of any guilt because pointing at each other as the culprit.
This place is unbelievable...
www.sydsvenskan.se/2025-05-07/f...
#academicsky #lund #sweden
It's official, JD Vance is total jinx material.
April 21, 2025 at 8:13 AM
It's official, JD Vance is total jinx material.
March 11, 2025 at 7:40 AM
Nice to see the first amendment completely ignored. After many other constitutional crisis inducing moments, this might be the lowest yet.
Good luck America, don't be bossed around and show us your famed democracy.
Or don't, and be forgotten.
Good luck America, don't be bossed around and show us your famed democracy.
Or don't, and be forgotten.
March 4, 2025 at 6:37 PM
Nice to see the first amendment completely ignored. After many other constitutional crisis inducing moments, this might be the lowest yet.
Good luck America, don't be bossed around and show us your famed democracy.
Or don't, and be forgotten.
Good luck America, don't be bossed around and show us your famed democracy.
Or don't, and be forgotten.
Lila Chergui defending and discussing bosons in a ring and in self-bound droplets
February 28, 2025 at 1:02 PM
Lila Chergui defending and discussing bosons in a ring and in self-bound droplets
PhD defense with opponent Thomas Bush from OIST.
"The Hilbert space is big, you wouldn't believe how mind-bogglingly huge it is"
"We live classically in a world of product states, everything anyone will ever experience is a null measure subset of the Hilbert space"
#physics
"The Hilbert space is big, you wouldn't believe how mind-bogglingly huge it is"
"We live classically in a world of product states, everything anyone will ever experience is a null measure subset of the Hilbert space"
#physics
February 28, 2025 at 12:33 PM
PhD defense with opponent Thomas Bush from OIST.
"The Hilbert space is big, you wouldn't believe how mind-bogglingly huge it is"
"We live classically in a world of product states, everything anyone will ever experience is a null measure subset of the Hilbert space"
#physics
"The Hilbert space is big, you wouldn't believe how mind-bogglingly huge it is"
"We live classically in a world of product states, everything anyone will ever experience is a null measure subset of the Hilbert space"
#physics
February 5, 2025 at 4:39 PM
In the future, reactions leading to fusion, or what's happening in reactors, or even reactions used for fabrication and exploitation of isotopes for medical or industrial purposes, could be studied with a method which is closer to the quantum mechanical properties of nuclei than ever before.
13/n
13/n
January 8, 2025 at 10:10 PM
In the future, reactions leading to fusion, or what's happening in reactors, or even reactions used for fabrication and exploitation of isotopes for medical or industrial purposes, could be studied with a method which is closer to the quantum mechanical properties of nuclei than ever before.
13/n
13/n
Everything you see in the night sky, was once upon a time a nuclear reaction, and nuclear reactions are "a concept about which we know frighteningly little".
12/n
12/n
January 8, 2025 at 10:10 PM
Everything you see in the night sky, was once upon a time a nuclear reaction, and nuclear reactions are "a concept about which we know frighteningly little".
12/n
12/n
This research not only advances our understanding of nuclear reactions but also has implications for astrophysical phenomena like stellar burning and nucleosynthesis.
11/n
11/n
January 8, 2025 at 10:10 PM
This research not only advances our understanding of nuclear reactions but also has implications for astrophysical phenomena like stellar burning and nucleosynthesis.
11/n
11/n
I think it is pretty convincing that the vibrations and rotations that the nucleus does when kicked a little bit are the most important features to consider, even though we need to study and play with this tool much more, now that we can!
10/n
10/n
January 8, 2025 at 10:10 PM
I think it is pretty convincing that the vibrations and rotations that the nucleus does when kicked a little bit are the most important features to consider, even though we need to study and play with this tool much more, now that we can!
10/n
10/n
By comparing our results with experimental data and phenomenological models, we see a fantastic quality of the result compared to previous methods. We start to be the first that are able to say what makes a large nucleus more or less "bouncy" from a quantum mechanical point of view!
9/n
9/n
January 8, 2025 at 10:10 PM
By comparing our results with experimental data and phenomenological models, we see a fantastic quality of the result compared to previous methods. We start to be the first that are able to say what makes a large nucleus more or less "bouncy" from a quantum mechanical point of view!
9/n
9/n
The mean idea behind this new result is that since the nucleus is complicated, instead of describing all processes choosing one shape to act as reference, we mix many. We define all possible shapes and see how probable it is that the nucleus has that shape at a given moment.
5/n
5/n
January 8, 2025 at 10:03 PM
The mean idea behind this new result is that since the nucleus is complicated, instead of describing all processes choosing one shape to act as reference, we mix many. We define all possible shapes and see how probable it is that the nucleus has that shape at a given moment.
5/n
5/n
As you see in the picture, I think we're getting pretty darn close!
4/n
4/n
January 8, 2025 at 10:03 PM
As you see in the picture, I think we're getting pretty darn close!
4/n
4/n
The problem is deceptively simple: what happens when you throw a neutron against a nucleus? Especially, how many neutrons will bounce off without exchanging energy? This is called a scattering problem, and it is way harder than it sounds.
2/n
2/n
January 8, 2025 at 10:03 PM
The problem is deceptively simple: what happens when you throw a neutron against a nucleus? Especially, how many neutrons will bounce off without exchanging energy? This is called a scattering problem, and it is way harder than it sounds.
2/n
2/n
I don't know if I'm saved by their incredible skill or screwed by the sheer amount of fuckups of these two.
January 6, 2025 at 5:54 AM
I don't know if I'm saved by their incredible skill or screwed by the sheer amount of fuckups of these two.
More than one year late, I discover that in China a Pebble bed reactor started commercial operations.
We live in the future.
Maybe also you and your timeline did not know.
We live in the future.
Maybe also you and your timeline did not know.
December 16, 2024 at 8:50 AM
More than one year late, I discover that in China a Pebble bed reactor started commercial operations.
We live in the future.
Maybe also you and your timeline did not know.
We live in the future.
Maybe also you and your timeline did not know.