Jinling Institute for Advanced Study.

In a laboratory at the Institute of Physics, smoke was filling the room at the moment.

Sheng Xianfu, who was smoking cigarettes one after another, flicked the cigarette ash, looked at the design sketch on the table that had been changed many times, sighed and said, "You said that Professor Lu, why did he suddenly study Yang Mills's equation?" ”

Li Changxia, who was sitting next to him and looking at the literature, shook his head: "I don't know." ”

Sheng Xianfu said with a worried face: "Then can this fusion battery still be done?" ”

He gave up the opportunity to be the director of the Southwest Institute of Physics to come here and follow Professor Lu to engage in the miniaturization of controlled fusion. As a result, more than two months have passed, and there is still no progress on the research topic.

It's good now, not to mention that there is no progress, and the academic leaders of the project have gone on to work on other projects.

“…… I don't know. ”

Sheng Xianfu couldn't help but say, "I don't know if you can say something else?" ”

Professor Li Changxia grabbed his hair and said with a helpless expression: "Theoretically, if we can establish a unified relationship between strong interaction and electromagnetic interaction...... It would also be more beneficial for us to deepen our understanding of the conditions of nuclear fusion. ”

When he said this, his tone was also full of uncertainty.

After all, he himself is a well-established engineering professor, and if he wants to say that he is confused, he is much more confused than Sheng Xianfu at this time.

Sheng Xianfu glanced at him.

"And then? How long do you think it will take to translate this theoretical result into real technology? And what do you think we can do if we deepen our understanding of nuclear power? Can you still conjure this reactor into flowers? ”

Li Changxia sighed and said, "But there is no other way now." ”

Sheng Xianfu couldn't say anything this time.

This sentence is to the point.

Even if they didn't, they wouldn't be able to do anything about it.

In order to solve the problem of reactor heat dissipation, they have at least designed nearly a dozen sets of solutions for this purpose. However, none of the options could pass the test of technical feasibility, and even the best of them were melted down after 34 seconds of operation.

"Maybe the idea of using high temperature to complete the ignition is wrong in itself," Sheng Xianfu, who pondered for a while, suddenly said, "Maybe as you said at the beginning, if we can use a way to reduce the temperature conditions of the fusion reaction, our research may be simpler." ”

After flicking the cigarette ash, Professor Li Changxia shook his head with a self-deprecating smile: "I think now that it may not work to make controlled fusion smaller and install a spacecraft on it." ”

The silence probably lasted for a moment.

Sheng Xianfu, who was meditating on the design sketch on the table, suddenly sighed, reached out and pressed the cigarette butt into the ashtray.

"I'll go find Professor Shiroku."

As he spoke, he crumpled up the sketch on his desk that had been changed for an unknown number of times and stuffed it into his pocket, then got up from his chair and strode towards the outside of the laboratory......

……

When Sheng Xianfu arrived at Jinda, Lu Zhou was teaching students in the lecture hall.

Or, to put it more accurately, a lecture on quantum mechanics.

Quietly walked into the lecture hall from the back door, looking at the crowded scene in the classroom, Sheng Xianfu couldn't help but sigh in his heart.

In the past, when he was at the Luyang Institute of Physics, he also worked as a lecturer at the nearby University of Science and Technology, but the lecture hall was never full of more than half of the people in the theoretical courses of controlled fusion and plasma physics.

Of course, this may also be due to the fact that controlled fusion was so unpopular at the time that not many people took his class......

Without disturbing Lu Zhou's class, Sheng Xianfu barely found a vacant seat in the last row of the lecture hall, and then listened to the lecture while patiently waiting for it to end.

When he walked into the classroom, it seemed that he had already entered the second half of the lecture.

During the interaction with the students, I saw one student raise his hand and ask a question.

"Professor, can you tell us how to understand the Young Mills equation from a mathematical point of view?"

When this question was raised, it immediately received a lot of agreed.

It can be seen that for the students of the School of Physics, there are still many people who are interested in this theory.

“…… With your current level, it's still too difficult to understand this equation," nodded to the student who asked the question, and Lu Zhou said with a smile, "If you are interested, you can consider waiting for May 20th to take a bus to the old campus to audit." At that time, I will explain this issue in detail at the report meeting. ”

At this time, someone in the audience whispered.

"But that admission is too hard to apply."

This is indeed a problem.

For this kind of international academic seminar, the threshold is not only for the speakers, but also for the participants.

happened to hear the whispered complaint, Lu Zhou, who was standing on the stage, thought for a while, and then smiled and said.

"Then I'll talk about it briefly."

Clearing his throat, the expression on Lu Zhou's face was slightly adjusted, and he spoke.

"To understand the Young Mills equation mathematically, we first have to know what it is."

"To put it simply, the non-abelian symmetry group given by the Young Mills equation is a special gauge theory. In the classical sense, this theory is similar to Maxwell's theory in that it replaces the Abelian commutation group U(1)...... with a more general compact gauge group G."

When it comes to math stuff, it's useless to just say it.

Lu Zhou casually picked up the chalk and wrote on the blackboard behind him.

[If 0=dA∗F, then the variational division from the Lagrangian operator of the passive Yang Mills field can be derived: L=1/4g²·∫Tr(F'∗F)......]

【……】

As for the proof of the Young Mills equation, it is not necessary for undergraduates to think about it.

Even the professors at Princeton, if they want to understand his theory, have to start with the thesis of the L manifold.

What he is now writing on the blackboard is just a few explanations of the Young Mills equation itself.

At most, at most, it is only to explain this proposition at the same time, and incorporate a little bit of his own ideas.

In this way, there are more and more calculations on the blackboard.

Lu Zhou, who was gradually entering the state, seemed to be a little unable to stop writing, and the language of explanation became less and less.

The students sitting in the lecture hall looked at the blackboard with bewildered expressions.

If you can barely understand it at first, you have been deeply impressed by this esoteric theory later.

Later, not only the students, but also some professors of the Faculty of Physics who came to observe the lectures, gradually felt the struggle.

What is this guy writing about?

The more they looked down, the more they felt......

What Lu Zhou said seems to be a little different from their major?

By the way, is this guy really talking about the Yang Mills equation?

Many old professors who stared at the blackboard in amazement even began to doubt life.

Sitting in the front row of the lecture hall, staring at the rows of calculations on the blackboard, Academician Lu's brows were tightly locked.

Suddenly, he keenly caught a line of key words from the equation on the blackboard, and his pupils suddenly contracted.

“…… The non-zero asymptotic constant of the vacuum state reduces the canonical group to a U(1) subgroup! ”

He's trying to mathematically explain the mass gap of strong interactions!

In an instant, Academician Lu's eyes were full of eagerness.

However, just when he looked at the blackboard expectantly, expecting Lu Zhou to write like this until the last step, Lu Zhou seemed to live up to his expectations.

I saw that Lu Zhou, who was still in high terms a second ago, suddenly stopped the chalk in his hand, took half a step back and looked at the equation on the blackboard, and stood there pondering for a long time.

It seems that I can't write anymore.

He scratched the back of his head, dropped the chalk in his hand, turned to look at the classroom, looked at the confused students, and smiled a little embarrassedly.

"Excuse me...... It's a little bit far away just now. ”

As soon as they heard this, the physics professors, who were also waiting for the final result with Academician Lu, almost didn't spurt out a mouthful of old blood.

it!

You're halfway there, but you're done with the rest!

However, unlike most of the professors present, Sheng Xianfu, who was sitting in the back row, was gradually brightening his pupils at this moment.

Although he didn't understand the content of the lecture itself, he got unexpected inspiration from it.

"As long as the distance between the nuclei is small enough ......"

He was muttering to himself, and a dark inspiration flashed through his mind.

While this may sound crazy, he did have in mind a possible model of a controlled fusion reactor.

If it makes sense in theory......

Perhaps they have a way to liberate the energy in the nucleus in a new form under the conditions of a reaction of hundreds of millions of degrees Celsius......