If the dormitory where Li Mu was staying was conscious, he probably would not have thought that this resident who only stayed for a few months would receive several visits from important people.
As a top physicist still alive, Chen Ning Yang can certainly be considered a big shot.
With the help of his assistant, Mr. Yang slowly walked into Li Mu's dormitory.
When Li Mu in the dormitory saw this man whose photos he often saw in various physics books, he shouted respectfully: "Mr. Yang!"
Li Mu has always paid the greatest respect to scientists who have made great contributions to mankind's exploration of truth.
Mr. Yang smiled at him and stretched out his hand: "Hello, Li Mu."
Li Mu quickly reached out his hand and shook Mr. Yang's hand.
Although Mr. Yang needed support for the time being because he went upstairs just now, his hands were still very strong.
It will definitely be no problem to at least write a standard model or something.
"Why do you need to go upstairs? I just went downstairs to see you."
Stretching out his hand, he also supported Mr. Yang's other arm, sat on the chair in front of the desk, and said at the same time.
Mr. Yang smiled and said, "It's okay. I'll also take a look at the dormitory you live in."
He looked around and finally praised: "This dormitory is quite good. It should be at least very comfortable to live in."
Li Mu nodded.
"Yes, it's quite comfortable to live here, and the hospitality provided by Gao Neng is good."
After he came to the High Energy Institute, the High Energy Institute naturally did not treat him badly. The treatment was very good, and all meals and travel were reimbursed, even if he ate out.
As for the dormitory building he lives in, it is relatively new. The environment in the dormitory is very good and the space is large. Even though there are nearly 10 people in the dormitory, it does not feel cramped.
At this time, Director Wang Fang, who was also nearby, heard Li Mu's words and said with a smile: "Li Mu is our pride, not to mention that he came all the way to the Institute of High Energy, so of course we must do a good job in these details. "
Mr. Yang smiled and said: "This is indeed a good point. No matter what you do, the first priority in scientific research is to provide a good environment for our researchers."
"We can't spend our money to build a particle collider, but at the same time we can't even spend money to improve the living conditions of researchers."
Wang Fang was stunned, and the smile on his face disappeared, "Mr. Yang, you don't need to say more about this kind of thing. As the director of the Institute of High Energy, I will naturally not treat our people badly."
The words were quite sharp, which made Li Mu stunned.
Suddenly he remembered a rumor in the particle physics world.
The Institute of High Energy Physics once applied to build a large particle collider called CEPC. This large particle collider is set to be the Large Hadron Collider at CERN in Europe, and its collision energy is even higher.
But it is obvious that the original Large Hadron Collider cost 9 billion euros. This stronger CEPC will only be more expensive. The estimated cost is more than 100 billion yuan, and Yang Lao has met with clear opposition.
As one of the top experts in physics, Mr. Yang’s objections were of course very weighty, so the plan was shelved.
Of course, it is precisely because of this incident that the relationship between the Institute of High Energy Physics and Mr. Yang, the world's top figure in physics, has deteriorated.
But today, Mr. Yang came to the High Energy Institute because he wanted to see him.
Li Mu couldn't help but feel a headache. Why did he get involved in such a thing?
After all, the arguments made by both sides are very reasonable. If he is a bystander, he may be able to express his opinion freely, but now that he is in the middle of it, it is difficult to express his opinion.
Of course, Mr. Yang didn't come here to quarrel today. He waved his hand and said with a smile: "Haha, okay, Director Wang, let's not talk too much about this kind of thing. At least I saw your dormitory. , it’s really good.”
"Then, please give me some space to chat with Li Mu?"
After hearing what Mr. Yang said, others naturally stopped talking. Although Mr. Yang opposed the CEPC plan of the Institute of High Energy, the vast majority of people in the Institute still have complicated feelings for Mr. Yang, or at least they still have respect.
After all, when they were young, they listened to Mr. Yang's achievements, read his papers, studied the law of non-conservation of parity and the Yang-Mills equation, and gradually grew up to be powerful.
In this way, everyone left the dormitory. Mr. Yang's assistant originally wanted to stay here and continue to look after him, but Mr. Yang just smiled and waved his hand and said, "With Li Mu here, you don't have to worry."
When Zhu Li heard this, he had no choice but to nod. Of course, he still gave Li Mu a few words of advice before leaving.
Finally, there were only two people left in the dormitory, one old and one young.
Mr. Yang was not in a hurry to speak. He just turned his attention to the draft papers on Li Mu's desk.
Soon his eyes lit up, and he picked up some of the draft papers and started reading them.
"Is this...are you working on the Standard Model?"
he said in surprise.
"Yes. "
Li Mu nodded.
Mr. Yang nodded slightly, looked at it carefully, and said nothing.
That's what true scholars are like. No matter how much they want to say, once they see something academic, they will immediately turn their attention away.
Li Mu didn't speak, and waited quietly for Mr. Yang to finish reading.
There were a lot of draft papers, and he put them in order, so it was very convenient for Mr. Yang to read them.
Soon, Mr. Yang was quite surprised and said: "Are you trying to solve the perturbation expansion problem of the Standard Model?"
Hearing Mr. Yang's words, Li Mu couldn't help but sigh. He was indeed the top physicist, and he could see the intention of these scraps of paper so quickly.
Then, he nodded and said, "Yes."
Mr. Yang nodded slightly and said: "The problem of the non-perturbative definition of the Standard Model has troubled the physics community for decades - strictly speaking, it has been troubled since the birth of the Standard Model."
“Scholars who dare to attack this issue are either geniuses or they overestimate their abilities.”
"but……"
Mr. Yang glanced at Li Mu's draft paper a few more times, then smiled and said, "Obviously you are a genius."
"Your research progress seems to have entered a critical stage."
"But now it seems that you have encountered some problems?"
Li Mu nodded and said, "It's a problem encountered in the process of dealing with weak interactions and model coordination."
"Because of the existence of chiral fermions, when using lattice point theory to realize their non-perturbative definition, the problems caused by the No-go theorem make it impossible for me to do it from a mathematical point of view."
"Well, this question..."
Mr. Yang thought for a moment, and finally said with a wry smile: "As you can see, I am already so old, and it seems that I have a little difficulty understanding the questions you asked."
"But it is obvious that your research on this has been in-depth enough, and you may be the first person to do so."
"I can't give you much advice, but the only suggestion is that the lattice theory has probably completed its mission. Perhaps, you can start from another angle."
"Another angle...?"
Li Mu fell into deep thought.
The full name of lattice theory is lattice gauge theory, which is one of the non-perturbative methods for dealing with quantum field theory.
"One" means that there is not only one method, but of course the grid gauge theory is also one of the more popular methods.
However, according to the general understanding in the physics community, the problems he encountered may be encountered no matter which non-perturbative definition method is used.
So let's change this angle...how to change the angle?
Various non-perturbative definition methods resurfaced in his mind.
Flow algebra, renormalization, grid points...
Non-perturbative problems are situations that cannot be described by perturbation theory.
It can be said that the birth of the non-perturbative method can be regarded as a method discovered by physicists after they "changed the angle" when they found that the perturbation theory could not help them solve the problems in quantum field theory.
But now, he has to change his perspective again in order to deal with problems that cannot be solved by non-perturbation methods.
There seems to be a feeling of reaching a dead end.
"...renormalization, grid...non-perturbation..."
Suddenly, Li Mu was stunned.
Why limit your mind-set to non-perturbative methods?
A real change of perspective may be to trace the root cause.
Whenever you use the perturbative expansion method, you are bound to encounter non-perturbative problems.
So he should...
Li Mu woke up from the storm in his mind and captured the key inspiration.
right!
Change the angle.
Just change the angle!
What he should do is to get out of the perturbation and expand!
There was surprise on his face and he said to Mr. Yang: "Thank you, Mr. Yang, for giving me a very important tip!"
Hearing Li Mu's words, Mr. Yang was stunned: "You... have an idea?"
Did he give any very important tips?
"Change a different angle" was just an idea he had based on the current status of research on this issue in the physics community, but he no longer had the energy to think about how to change it.
Li Mu just smiled and said, "Yes, I have an idea."
Seeing Li Mu's expression, Mr. Yang had seen this expression many times.
Just like when Higgs came to him excitedly and said that he had discovered the Higgs mechanism, it was also like when Steven Weinberg and Abdul Salam established the electroweak unified theory on Yang- On the basis of Mills' field theory, and after introducing the Higgs mechanism into Glashow's electroweak theory, the expression he showed when he obtained today's Standard Model.
So he knew that Li Mu had probably really found the key to success.
He smiled and said, "I'm very happy to be able to help you."
"Then I wish you success in advance."
(End of chapter)
