Great Country Academician

On the reporting table, Xu Chuan paused after writing a line of titles.

He turned slightly to look at the audience in the auditorium, and said with a hint of apology: "I'm sorry to make you understand this new theory temporarily, but I have the responsibility to correct the flaws and errors in the paper."

"As compensation, after today's report, I will stay at NTU for three days. During this period, everyone present can come to me for discussion on difficult issues related to this new theory. I will I’ll do my best to answer everyone’s questions.”

"Of course, in the next report, I will try my best to slow down the explanation speed so that everyone can understand it as much as possible."

"OK, let's get down to business."

With that said, Xu Chuan turned around and wrote the next mathematical formula on the blackboard:

【H=p/2m+∑qhωaqaq+∑q(VqAqE^iqr+h.c.)】

"I believe that everyone can easily understand the formula I wrote down and know what it is."

"For condensed matter physics, one of the greatest achievements in the 20th century is the image of single-electron energy bands in weakly interacting systems or the Fermi liquid theory, which has brought us a completely new way to study particle physics."

"The study of strongly interacting systems and the establishment of a complete and self-consistent theoretical framework are currently major challenges in the field of condensed matter physics."

"Because the degrees of freedom such as charge, spin, orbit, and lattice compete and cooperate with each other in this system, the system presents a variety of surprising and amazing new material forms that are difficult to predict in advance, and it is difficult to unify the theory."

"That includes the polariton system."

"Polarons are a kind of quasi-particle, the most typical of which are electrons wrapped in phonon clouds in ionic crystals. Generally, according to the size of polarons, they are divided into so-called large polarons and small polarons. The scale of the former is much larger than Lattice spacing, or basically the size of the lattice spacing.

"If you want to fully understand the polaron system, you must"

On the reporting table, Xu Chuan spoke slowly, starting from the most basic polaron system.

There is no way, if you want to fully understand his report today, you must do this.

In the auditorium, Witten's eyes were fixed on the reporting table. From the moment Xu Chuan wiped off the formula on the blackboard and re-wrote the first line of calculations, he could no longer take his eyes away. For fear of missing any formula or even a punctuation mark.

The worries in my heart before were completely forgotten at this moment.

All I have in my mind at this moment are those lines of wonderful formulas.

For a scholar, there is nothing more exciting than this.

On the other side, in the corner of the auditorium, Feng Shen, a student from Nanjing University who had come with his mentor Chen Zhengping to expand his knowledge, looked at the 'senior brother' on the stage with a confused face, completely unable to understand what he was doing. What.

"Professor, Senior Brother Xu. What are you writing?"

After enduring it for a long time, the newly recruited student still couldn't hold back and asked the instructor sitting next to him.

Chen Zhengping ignored him and stared at the blackboard. Like Witten, he was also afraid of missing any details, and he was not interested in answering the students' questions.

Because if he doesn't, he might not be able to keep up.

Although he was Xu Chuan's tutor, it has to be said that the student he led had already surpassed him early in physics, not to mention mathematics, in the fields of condensed matter physics and high energy physics that he was good at. he.

At the same time, sitting in the front row, Professor Stuart Parkina, winner of the Millennium Technology Award, stared at the lecture table with dazzling eyes and murmured to himself, with a hint of excitement and excitement.

"Does the entropy change of lattice carriers originate from the degeneracy effect caused by carriers? The electron-phonon interaction actually causes the softening of phonon dispersion at the position of the double Fermi wave vector. So that's it .It’s really incredible.”

Beside him, another professor in the field of condensed matter said with a solemn face: "Yeah, I never thought that small polarons can be explained in this way. The characteristic peaks of quasiparticles we have been looking for, now we see Come on, the direction is completely wrong.”

At the lecture desk, Xu Chuan was still writing the formula in his hand, explaining the 'Typical Behavior Theory of Small Polarons in Strong Electrophonon Interaction Systems'.

This is a theory he established in his previous life, although he has not yet studied and related these things in this life. But for him, it is impossible to forget this knowledge even if he forgets anything.

When the title fell on the blackboard, the theory buried deep in my memory quickly came to life.

Along with his explanation and writing, the little time left in the morning passed little by little. When the time came to twelve o'clock, the administrative teacher in the background of NTU approached the school leader anxiously.

"Principal Tan, it looks like it's already twelve o'clock. Do you want to eat first? People at the hotel have asked me several times."

Looking at the figure who was still continuing to report on the stage, Tan Shaoyuan thought for a while and said: "You ask the hotel to prepare first. If the food is finished here, the food will be served immediately."

"As for when it will end, I am not sure yet. If it is delayed until a little later, I will figure out a solution here."

"Also, arrange for someone to get some small cakes or biscuits and other food, and give one to the scholars present to fill their bellies."

Although he didn't understand, he knew the importance of today's temporarily added report to Xu Chuan.

Whether it is to make up for the shortcomings of the paper or to the perfection of the report, it is crucial.

Of course, more importantly, this is an unparalleled event for the physics community and the scholars here today.

Although it is not a complete strong electric unity, the explanation theory of the strong electric phonon interaction system is still enough to bring physics to a new level.

At this point, Xu Chuan was asked to stop explaining and go eat first. Let alone whether Xu Chuan would agree, even if he agreed, I am afraid that the hundreds of physicists in the auditorium would not agree.

For a scholar, pursuing areas that have never been explored is far more important than eating.

Of course, for NTU, this kind of thing still needs to be considered in many aspects. After all, this conference is aimed at international image.

As a host, you should take good care of the guests who come to attend the meeting.

So Tan Shaoyuan thought about it and decided that if the report was not completed by one o'clock, he would communicate with Professor Xu to see if he could pause for a while.

After all, many of the scholars present are over 70 or even 80 years old. Even if Xu Chuan can withstand such a high-intensity lecture, these older generation experts may not be able to withstand it. .

Fortunately, as it approached one o'clock, Xu Chuan began to finish the work.

".In the static structure of the associated system, that is, as the initial condition for dynamic evolution, its electronic state satisfies the stationary Schrdinger equation, and the two-lattice part is obtained by the system energy minimum condition. The two are coupled together through self-consistency Solve to get a stable structure.”

"At the same time, the evolution of the antipolar system over time is solved using non-adiabatic dynamics methods. The motion of the lattice satisfies the classic Newtonian equation of motion: Mü, (t)=- K[2u, (t)- Un+ 1(t)- Un-1(t)]+2a[Pm.n+!(t)-Pn-1.n(t)]+I el E(t)[pn.m(1)- 1]”

On the report stage, Xu Chuan tried his best to sort out and simplify the core of the framework in the final steps, so that the audience in the audience could understand his thinking as much as possible.

At the reporting table, when he heard this step, Edward Witten, who had been sitting upright and supporting his body, finally relaxed and leaned on the soft back of the chair, with a smile on his face.

"Another miracle, it's simply unimaginable how he did it."

Beside him, Nobel Prize winner Professor Michael Kosterlitz stared at the blackboard on the stage for a while, and then spoke softly, as if in response or talking to himself: "Is this possible? Did he prepare it a long time ago?"

"Um?"

After coming back to his senses, Kosterlitz smiled and said: "It's just like a magic show. The flaws and details that we can see are deliberately made by the magician for the audience to see."

"And when we tried to expose this flaw and try to deny his performance, we discovered that everything was under the control of the magician. The so-called flaw was just that he deliberately let us do it for the nature of the performance. Something to see.”

After a slight pause, he continued: "After all, it is hard for me to believe that someone could complete a transcendent problem in such a short period of time and at the scene of such a report meeting without preparation in advance."

"Based on the time-dependent Schrdinger equation and Newton's equation of motion, in a strongly correlated system, the ground state is not the scattering of electron polarons and hole polarons in the degenerate polymer, but the scattering of electron polarons and hole polarons in Under the action of the electric field, the polymer chains move toward each other, and the system eventually forms a neutral excitonic state."

"Due to the competition between the electric field force and the electroacoustic coupling, the excitons formed exhibit a phenomenon of forward and reverse polarization oscillation, and the system eventually reaches a dynamic equilibrium."

"This theory can provide a reasonable explanation for the typical behavior of small polarons in strong electron-phonon interaction systems."

"That's it for the additional report. I believe that with the knowledge of everyone here, it is not difficult to understand this theory."

"The theory of the typical behavior of small polarons in strong electron-phonon interaction systems is a very interesting problem. It is part of the strong interaction and the unified theory of strong electricity."

"In the coming time, I hope it can serve as a catalyst in the fields of strong electric unified theory and strong interaction, allowing more people to see it and invest in these fields."

With that said, Xu Chuan looked at Professor David Gross and continued: "Of course, now, it should be enough to answer Professor Gross's question."

Off the stage, David Gross caught Xu Chuan's gaze, and then moved his gaze to the blackboards on the reporting table. The dense formulas on them had already completely conquered him.

After getting the answer from Gross's eyes, Xu Chuan took a deep breath and continued:

"The above is all the content of the additional report. In the next three days at NTU, I will do my best to answer the questions raised by this new theory until there are no more questions."

"Thank you for your patience. The afternoon report will continue with the Q\u0026A session. As for now, please move to the restaurant to eat. After all, it is getting late."

After saying that, he bowed slightly towards the auditorium to express his gratitude.

And at this moment, in the auditorium, there was a flood of applause, one after another like a wave, lasting for a long time.

Even though Xu Chuan had left the reporting table and could not see his back, the applause still continued.

For everyone sitting here today, this is a miracle of physics that shocks them like never before.

No one expected to witness the breakthrough in the unified theory of strong interaction and strong electricity here.

It is even more likely to be a temporary idea and a temporary interpretation.

Of course, more people are more willing to believe that the relevant theories have been perfected long before this, and today they are just brought out.

But no matter what, from now on, another glorious crown will be added to the throne in the field of physics.

And today’s story will be passed down forever with time.

After the reporting desk, Xu Chuan walked out of the auditorium along the back door and walked towards his office.

Behind him, several of his students quickly followed.

"Professor, your performance in the report today was really great!" Naturally, the first person to speak was Xu Chuan's little fan Rong Xinji. He came out of the auditorium panting and caught up quickly. Xu Chuanhou said with an expression of admiration on his face.

"Yes, I thought there would be some minor flaws in this report at first, but I didn't expect you, Professor, to be so fierce and solve them right on the spot!"

Immediately, Yin Shi, the only girl among them, also said with stars in her eyes. Although she was not a physics major and could not understand today's report meeting, she knew that her tutor had done another earth-shattering thing at the report meeting.

Listening to the praises of several students, Xu Chuan smiled and shook his head and said, "Which of you will go to the cafeteria to prepare some food for me and send it to my office?"

Hearing this, several students were stunned for a moment.

"Professor, aren't you going to the hotel for the noon banquet?"

Xu Chuan shook his head and said, "You can just go, I have some other things to do here."

Perhaps for others, this matter has been solved when he perfectly proved the small polaron problem of the strong electron-phonon interaction system.

Today's report conference, despite its twists and turns, undoubtedly became more dramatic and legendary.

But for him, today's report meeting was not so perfect. The paper he uploaded to Arxiv and was about to be submitted also needed to be revised.

Maybe he doesn't need to do these things right now.

But at least he needs to remember his mistake today.