The ceremony of pick-up was not very grand. There were no welcoming staff around, and there was no crowded-out team. Apart from the three directors and one president, there were only two accompanying research assistants.

According to Prof. Faltins, these two are doctors of the Max Planck Institute for Mathematics. The reason why they appear here is because there is an administrative work in the Max Planck Society, and there is another bigger reason. It is the name of his long-cherished.

Even so, the two Nobel Prizes and a Fields Prize are here, and it’s not a huge pick-up. It has become a lot more meaningful.

However, as a pragmatist, Lu Zhou actually did not care much about these red tapes.

When I went to Stockholm to receive the award, he took the subway and went sightseeing all the way.

This time in Berlin, Lu Zhou was originally planning to take a ride to the hotel where he stayed. Even the bus route was investigated in advance.

Only now, it seems that these preparations are superfluous...

"You are a genius. How did you come up with the formulas?" At the door, he sat on the special train sent by the Max Planck Society. Professor Etter had just attached a seat belt and couldn't help but ask.

Lu Zhou said in a joking tone: "You may not believe it when you say it. When studying the literature in the Rock Library, the Schrödinger equation gave me a lot of inspiration."

Kleinhaha laughed: "There is nothing unreliable, hf methods and molecular dynamics simulations, and many have borrowed inspiration from quantum mechanics."

Obviously I don't want to hear this guy boast, Professor Etter coughed and continued to ask.

"I have read your thesis. Although I don't understand some of the theories in it, I have doubts about the parts I understand. How do you accurately simplify the solution of the multi-body ground state to the ground state density? What is the difference between the theory and the first principle calculation method if it is passed through the Schrödinger equation?"

The first principle calculation method is the core method of modern computational chemistry, and the source of its core theory is the Schrödinger equation in quantum mechanics. This kind of calculation method has certain advancement, but the problem is also very big.

First, the number of variables reaches 3n (n is the total number of particles). This astronomical number is often controversial.

Because not only the number of variables is so large, in order to make the conclusions "good-looking", the empirical parameters added in it are also horrendous.

“Yes, but not exactly,” Lu Zhou smiled and continued. “I introduced the concept of partial functional density theory in the study of the ground state density distribution problem room. For example, taking the radius of the designated core in the atom is ra, Called the truncation radius, the chopping function outside the truncation radius is the same as the real valence electron wave function ψv, thus obtaining..."

"Professional problems are left to discuss after a week," he began to feel big. Stellarman coughed and opened the topic. He looked at Lu Zhou and asked: "This week you plan to How to arrange?"

There is no blackboard at hand, and the next part is really not very good to continue.

Lu Zhou made a helpless expression on Professor Ethel. After thinking for a while, he continued: "Before the report meeting, I want to get familiar with the environment here. Is there any interesting place to recommend it to me?"

Upon hearing this topic, Professor Klein suddenly came to express his interest and said: "Interesting place? There is no place more interesting than Maple Labs throughout Berlin. Would you like me to take you there?"

Lu Zhou’s eyes lit up and immediately said, “Please take me to watch it.”

Compared to the landmarks of the Brandenburg Gate and the Houses of Parliament, it is still more interesting to him. In particular, the Max Planck Institute's laboratory, in the field of condensed matter physics, is famous for its existence.

Guided by a Nobel Prize, this opportunity will not let go.

After a half hour drive, I quickly arrived at my destination.

At the entrance of the Bernitz Hotel, the car took out the luggage from the trunk of the car.

Just as he was preparing to bid farewell to several scholars, Lu Zhou suddenly remembered something that had puzzled him for a long time.

"Right, actually I always wanted to ask a question."

Professor Klein and Yan Yue said: "If I can answer."

Lu Zhou smiled and said: "This problem may be a bit boring, just out of my own curiosity. Why did you send me an invitation letter to the Institute of Condensed Matter Physics instead of the Institute of Chemistry?"

Even if he is a mathematics research institute, he can understand it, but the invitation from the Institute of Condensed Matter Physics... Although it has nothing to do with his research, it still makes him feel a little confused.

However, I don't know why, just when he asked this question, the atmosphere was a little subtle.

In particular, Professor Ettel and Professor Faltins are expressionless faces.

Lu Zhou gradually began to realize that he seemed to ask a question that should not be asked.

Only the expression of Professor Cui Qing was somewhat proud, and cleared the voice of the blind man.

"This question is well asked..."

However, his words were not finished and he was interrupted by Faltins.

"This is indeed a very boring question," continued to play with the hat in his hand, and Fartings’s expression of indifference continued. "In addition, next time I bet I will consider playing 21 points instead of a technical throw. coin."

Lu Zhou: "..."

Although he was still confused, after hearing this sentence, he seemed to understand something...

......

The predecessor of the Max Planck Society was the Royal Society of Williams, founded in 1911. When the Emperor Wilhelm II believed that the interest in science and technology could enhance the country's strength, he established the society in his own name, and the royal family funded the research to strengthen Germany. Technical ability.

Standing at the height of the times to evaluate, this decision was undoubtedly quite far-sighted at the time. Thanks to the support of state capital, a large number of outstanding scholars and scientific research projects have emerged, making German technology and technology in the forefront of the world within 30 years.

After the end of World War II, although the Royal Society of Williams was disbanded, it was retained in the form of the Max Planck Society with the support of the United Kingdom.

The impact of this historical heritage can be clearly seen until today.

Although the position of the world academic center has been migrating to the west since the Cold War, due to the blood-making ability of the Max Planck Society, Germany's research in the fields of engineering technology and condensed matter physics still maintains the world's leading standards.

From this point of view, the Germans are much more fortunate than the French who lost the status of the world's mathematical center.

After staying in the hotel, Lu Zhou took a day off and the next day, at the invitation of Professor Cui Qing, went to the Maple Lab in Berlin.

Strictly speaking, this Maple laboratory is also one of the legacy of the Royal Society of Williams, but after a modern transformation, it is almost invisible.

"...The Max Planck Institute's laboratories are located in various cities in Germany. This is just one of them, and it is probably the largest one. Many research institutes in the physical and chemical fields have a considerable number of research topics here. Like a reactor, it ignites knowledge in all fields and releases its energy."

Lu Zhou thought about it and asked: "So the research here is based on the research institute?"

Professor Kleeqing replied in a chattering voice: "That is not. To be precise, most of the projects here are carried out in units of research groups. The difference between groups and groups is great. For those who have not worked here. This may be difficult to understand. In short, you can understand that it is a different research method from American research institutions."

Walking on the tree-lined path leading to the condensed matter physics laboratory, Professor Cui Qing and Lu Zhou said about the composition of the Max Planck Society, while chatting with him about the anecdotes here.

When passing by a uniquely shaped oblate, Lu Zhou cast a curious sight on the other side.

"What is there?"

Professor Klein said with a smile: "There is the 'industry' of the Institute of Plasma Physics. You can guess what is inside, I bet you can't guess."

“Is it a collider?” Lu Zhou joked.

"Haha, that's not it, this is a more sci-fi thing than the collision machine," Haha smiled. Professor Cleace said in a joking tone, "You should have heard of it, controllable nuclear fusion is interesting. topic."