Chapter 396 Erase the blackboard and put pen to paper again

The familiar Beijing University Auditorium, as well as some familiar faces, of course, there are also some unfamiliar faces.

However, these unfamiliar faces are only unfamiliar to the Beijing University Auditorium, but to the physics community, these people are all familiar faces.

Among them are Juan Maldacena, who also came from the Institute for Advanced Study in Princeton, as well as Nobel Prize winners in physics Penrose, Jim Peebles, Gross, etc.

All in all, if these physicists disappear, human physics may stagnate for at least twenty years, or even longer.

Of course, if everyone else except these physicists also disappears, then not to mention physics, mathematics will probably stagnate for decades.

Because many familiar faces present are the world's top mathematicians who have come here several times to listen to Lin Xiao's reports.

For these mathematicians, they have been here so many times recently that they are all familiar with it when they come in.

"Hey, Deligne, was the steamed bun with meat just delicious?"

"OH, it's Roujiamo, Roujiamo, Pompieri, not steamed bun with meat, please correct me."

"Oh! Look at my memory, I almost forgot again, it's Roujiamo."

Deligne and Pompieri continued to chat about the original issue of meat buns, while Maldacena, who was nearby, heard the conversation between the two colleagues and couldn't help but curiously asked: "What are you talking about? Meat?" A steamed bun with meat?"

"Oh, that's what we had for breakfast today. It's a snack unique to Qin Province in China. You can try more." Deligne said with a smile, "It's called Roujiamo, which is... well, similar to a hamburger. It’s just that they don’t fill the meat with bread, but with pizza dough.”

"Oh, so it's this. I remembered it. I saw it today." Maldacena nodded, and then said: "But speaking of this, I would recommend you to try that snack called tofu noodle, especially It's salted tofu brain, it's called Yijue."

At this time, a voice from the side came: "Salty tofu pudding? No, no, no, you have to eat sweet tofu pudding, that is delicious."

Maldacena turned around and said, "Witten, Witten, have you completely forgotten us old friends, and are you reluctant to go back to China?"

"Of course not." Witten said with a smile: "Maybe it's the sweet tofu that makes me want to stay."

"Haha, then you still have to try salted tofu puffs." Maldacena said, "You will discover another world."

"No, no, you probably haven't tried sweet food before, you..."

The two foreigners started arguing over sweet and salty tofu, which confused Deligne and Pompieri next to them. Is there any difference between the sweet and salty ones?

So they discussed whether they should try it separately next time.

Of course, as time passed and ten o'clock was approaching, everyone present became quiet and stopped talking about other things. After all, they all knew that the really important thing was Lin Xiao's lectures in the past few days.

Everyone present was already a little impatient.

Especially a physicist like Maldacena.

Compared with those Nobel Prize winners who came just to witness the history of physics, they are already completely successful, but for a relatively young physicist like Maldace, he still needs a Nobel Prize. Bell Prize in Physics to prove himself thoroughly.

Even in the current physics community, the main force in research is still these slightly younger physicists.

"Witten, you have been with Lin for a long time. Do you know how this report to Lin is going to proceed?"

Before starting, Maldacena asked Witten in a low voice.

The people around him also looked at Witten, showing curiosity.

Witten shook his head and said, "I don't know the specifics."

"However, all I can say is that there will be surprises in this report, and it may be a big surprise."

"a big surprise?"

Everyone else became curious.

At this moment, the host came onto the stage.

The host was the dean of the School of Physics. Facing the famous faces in the academic world, Dean Wang said with a smile: "Hello everyone, welcome to all the distinguished professors and doctors who have traveled thousands of miles to come here. After today, another significant mark will be added to the monument of physics. At the same time, our physics will also open a new chapter. From now on, we will study the theory of everything, without having to worry about it. It’s relativity and quantum mechanics after all.”

"Then, without further ado, let us invite our protagonist now. Welcome Professor Lin Xiao!"

Applause rang out, and everyone present saw that very familiar figure walking onto the stage.

Lin Xiao's figure is very familiar to both mathematicians and physicists. For mathematicians, Lin Xiao's figure has been engraved in their hearts. For physicists, Lin Xiao's figure was engraved in their hearts. The report that proposed the multi-dimensional field theory and this young figure have made them unable to forget.

"Hello everyone."

At this moment, Lin Xiao came to the performance stage, facing every scholar in the audience, with a faint smile on his face, and then bowed slightly.

"Well, most of the friends here should know me, and I basically know every friend here, so let's get started."

Lin Xiao opened a PPT. The PPT was very simple, with basically no bells and whistles.

And the first page of the PPT only has a few words.

[Gravity, gravitons, relativity, quantum mechanics]

"I know very well the reason why everyone is here. They are probably all here for my original paper."

"Especially the derivation process from NP problem to P problem."

"Yes, from the NP problem to the P problem, I have also read the article by Professor Faltings. The description in it is very correct. I did use the idea of ​​​​the P=NP problem in it."

"I would also like to thank Professor Witten here. If he hadn't accidentally mentioned the P=NP problem, I probably wouldn't have changed my thinking in this direction."

As he said this, Lin Xiao also smiled and glanced at Professor Witten, and everyone present also looked at Witten in surprise. They did not expect that Lin Xiao would think of using this problem in computing technology and mathematics to solve their physics problem. , actually because of the inspiration provided by Witten.

At this time, Lin Xiao also smiled and said: "Well, in this report, I will focus on how I used P=NP thinking to solve this problem of mine."

Turn the PPT page, and then the explanation of the P=NP problem will appear.

It is not difficult for the scientists present to understand the meaning of this question, but there are also some school students sitting in the back row, especially students from the School of Physics, participating in this report.

However, when these students saw the question given by Lin Xiao, they all immediately showed confused expressions.

What does this question mean?

Now they can't even understand the meaning of the question.

Of course, Lin Xiao obviously didn't take care of these students and didn't waste time on it.

Soon, after telling these things, he moved on to explaining his steps and ideas, and this was the most important to the physicists and mathematicians present.

Because this idea is likely to help their future research.

And then, under Lin Xiao's detailed explanation, they suddenly understood the steps that they had been confused about when reading the paper.

In the seat below, Maldace said in great amazement: "Oh my god, so it's like this, harmonic transformation of Einstein's field equations? Such mathematical ability... This is really something that no one can envy. Ability."

"Yes, that's true." Witten nodded and said, "I thought I had understood his steps, but I didn't expect it to have such a profound meaning!"

"This Professor Lin, is there anything he can't do?" On the other side, in the professor's seat at Beijing University, Dean Zhao Qi was also amazed.

Next to him, Xu Ji shook his head and said: "It's probably gone. Number theory, algebraic geometry, differential geometry, cohomology, harmonic analysis... I really can't find it. Now he has actually shown this in computer mathematics. Even now Tell me he can prove P=NP, and I’m probably willing to believe it.”

"Fortunately, he is from our Institute of Physics." Zhao Qi said with a smile. But at this moment, his peripheral vision spotted Wang Changsheng, the dean of the Institute of Physics, who was sitting in another row of seats. His smile suddenly froze. Then he silently covered his heart.

It hurts, it hurts so much.

…

In this way, Lin Xiao perfectly explained the most difficult to understand part of his paper to everyone present.

At this point, everyone present also understood, but at this time they also understood one thing, that is, Lin Xiao's method can only be used by Lin Xiao. It would be very difficult for them to use it.

Because this is a kind of dazzling skill performed by Lin Xiao in mathematics, just like a pianist named Liszt, who created a school of dazzling piano skills because his piano skills were so good that only he could play some songs. Come on, the method given by Lin Xiao at this time is exactly the same.

This is a dazzling skill that belongs exclusively to Lin Xiao. It requires inspiration and technology to complement each other. It is very difficult for others to use it. At least the time required will be doubled.

Thinking of this, the people present were not only helpless but also shocked.

It is undoubtedly very incredible that only one person can use a mathematical method.

Then, the report became simpler. Anyone present had basically read Lin Xiao's paper and understood the following parts, and could deduce the next steps in the same way.

Therefore, Lin Xia quickly finished the last part of this paper.

However, just when everyone present thought that today's report was over, Lin Xiao suddenly erased the words on the blackboard and put down his pen again.

[U(a,L)A(x)U(a,L)……]

Looking at Lin Xiao's steps, the people present were confused for a while, but soon, someone exclaimed: "This is... the existence problem of the Yang-Mills gauge field?!"