Evening.

Aerodrome.

Zhou Qin and several people boarded the plane.

Zhou Qin is the first class, because there are not many direct flights from BJ to the Eagle Country, so the ticket is very tight, this flight is also under British Airways, so Yang Wei and Sun Tian both took the economy class, if it weren't for Zhou Qin's big face, it is estimated that the upgrade procedures will not be completed, and the Nobel Prize is given in economy class.

Yang Wei came over with a blanket, "I brought you a blanket." ”

Zhou Qin smiled: "There is here." ”

"That's thin, cover more, don't catch a cold when you sleep at night. Sun Tian said.

Yang Wei smiled, "Then let's go back, you call us if you have something." ”

Zhou Qin said: "Go back, go to bed early at night." ”

Yang Wei said: "Okay." ”

Zhou Qin said: "If you sleep too much, come and call me, and I will change seats with you." ”

Sun Tian said, "No." ”

Yang Wei smiled and said, "You don't care about us." ”

The two of them went back to the economy class area.

At this time, the Eagle Nation flight attendant came over and asked the passengers to fasten their seat belts, and the plane was about to take off.

Zhou Qin looked at his watch and knew that the plane would not land until tomorrow morning, so he put the blanket on it, adjusted the back of the chair, squinted and fell asleep.

Half-hour.

One hour.

I don't know how long it took for him to be woken up by the sound of a voice in his ear.

It was a few foreigners who were talking, but in fact, the voice was not loud, and it was obviously lowered by them, but because the seats of several people were very close to Zhou Qin, he still heard it.

"There is no solution to this model!"

"I think it's the right idea. ”

"I didn't think the right way of thinking, I went wrong in the first place. ”

"Well, that's still not going to be able to compute a three-dimensional quantum system. ”

"I want to find only the low-energy state of the system based on the exact diagonalization method. ”

They all speak English, some have average English skills, and some have slightly better English. Several people are obviously not from the same country, their skin colors are different, there are two foreigners who are alone, and the other two foreigners may be in a master-apprentice relationship, the older one is arguing with them, and the younger one is not saying a word, looking up at them, while holding a small notebook to write and draw on it, as if recording their opinions.

The system sensed that the host needed its own help, and automatically activated the language system without waiting for Zhou Qin to speak. There is also a knowledge system.

There are very skilled upgrades at the top of the level.

"System, you've finally made me happy this time!"

The system said that it was also very tiring to follow such a host.,Obviously said yes.,The system pretends to be forced with the host.,But here it's the other way around.。

The system silently crouches in the corner and draws circles.

Zhou Qin also listened with interest.

I couldn't sleep, so I casually said a sentence in English.

Zhou Qin said lightly: "Density matrix renormalization group?"

Several foreigners looked at the young man in amazement.

The eldest white-haired foreigner said, "Do you know what we're talking about?"

His students asked, "All in physics?"

Zhou Qin smiled, "Sort of, I know a little." ”

"Hurry up, the anchor is going to pretend again. ”

"Damn! Popcorn is ready. ”

"Popcorn, melon seeds, drinks sold in the front row"

"Upstairs, bring me some. ”

"Okay, how much do you want?"

"Hey, hey, roll the calves, it's crooked. ”

". ”

"Okay, stop it. ”

"Why do you stop?"

"And you typed with your mouth?"

"No, I don't have hands, so I can only type with my feet."

"Upstairs, you're awesome, uncle obeys you. ”

The forty-year-old woman sitting in front of her became excited, turned her head and gave Zhou Qin a piece of paper, "You can take a look at my algorithm and model." ”

Zhang Ye took a look at it, and his eyes lit up, "Interesting." ”

The white-haired foreigner suddenly said: "She's not right, it's definitely not right." ”

In the end, the foreigner who bowed the top said: "I think it is still feasible, it is a breakthrough, and I am going to open a project after I go back." ”

Zhou Qin looked at it for a long time, and suddenly shook his head and said: "This method is quite interesting, but it still doesn't work, you want to reduce the degree of freedom of the system, and in this reduced space through specific renormalization techniques, keep the number of degrees of freedom of the system unchanged in the iterative process, and make the reduced system finally converge to the low energy state of the real system, but NRG is generally only applicable to impurity systems, and when calculus general lattice systems, there are often large errors." ”

When several people heard this, they were shocked.

The woman foreigner exclaimed: "You really understand?"

Zhou Qin smiled: "I studied a project that is very similar to this. ”

At this time, of course, you have to pretend to be forced!

Xie Ding foreigner said: "There will be errors, but they should be solved." ”

Zhou Qin shook his head, "This kind of error, even if it is 0.01, can't be solved." ”

The white-haired foreigner said seriously: "What do you think?"

"I think-" Zhou Qin said, "can the whole system be regarded as two parts, one part is the system, one part is the environment, and the whole system and the environment are called superblocks." Then, the ground state of the superblock is calculated, and after the ground state is obtained, the reduced density matrix is calculated, and then the reduced density matrix is diagonalized to select the eigenstate with large eigenvalues. These eigenstates with large eigenvalues are the states that have the most important properties of the ground state, and the system parts are then renormalized according to this criterion. ”

The woman excitedly said, "That's a great idea!"

The white-haired foreigner frowned, "But there are problems inside." ”

Zhou Qin did not shy away from saying: "Well, there are some problems that cannot be solved, such as when it comes to specific applications, it is difficult to establish a model. ”

Xie Ding foreigner immediately said: "I'll do the math, wait for me to do the math!"

The white-haired foreigner said: "Don't forget it, the young man is right, the model is difficult to build." ”

I can't stop talking.

Analyse.

Debate.

Study.

Compute.

Several people chatted all night, and in the end, no one slept.

The seats were littered with model drawings and formulas, and more than fifty sheets of paper were written.

It wasn't until the plane landed that several people woke up like a dream.

The white-haired foreigner looked out the window, "It's already here?"

Xie Ding Foreigner sighed: "Time is so fast." ”

The woman foreigner said: "Thank you today, I have opened up a lot of new ideas on this topic, let's leave our contact information, I don't know when we will see you again." ”

The white-haired foreigner smiled slightly, "I'm afraid we can all meet these days, right?"

Xie Ding said with a smile: "I think so." ”

The woman foreigner looked at Zhou Qin and the others, "Who are you?"

"My name is John. The white-haired foreigner pointed to the student next to him and said, "This is my student, who is here to attend this year's Nobel Prize ceremony." ”

The foreigner exclaimed, "You are Professor John, the world's top authority on physics!?"

The white-haired foreigner smiled: "I don't dare to be an authority." ”

The woman introduced herself: "My name is Tina, and I am also a Nobel Prize candidate in physics. ”

John was surprised, "You're Tina?"

Xie Ding's foreigner also looked at her, "Tina of quantum physics?"

Tina said, "It's me." ”

Xie Ding foreigner said: "My name is David." ”

Tina exclaimed, "It's you, Professor David, I've read your paper!"

David said, "I've also read your paper. ”

Tina smiled bitterly, "I've been admiring the name for a long time, so I came to participate in the Nobel Prize." She looked at Zhou Qin and the others, "I said how could it be so coincidental, there are so many physicists on one plane, and our country does not have a direct flight to the Eagle Country, so I went to Huaxia for a transfer." ”

John laughed, "Me too." ”

David noticed that Zhou Qin had already started to take his luggage, and couldn't help asking, "Which professor are you?"

Zhou Qin smiled and reported to his home, "Zhou Qin." ”

Tina asked, "Also nominated for the Nobel Prize?"

Zhou Qin smiled.

Several world-famous physicists, you look at me, I look at you, obviously I haven't heard of it. But they also know that there are too many famous physicists in the world, and it is impossible for everyone to know them, and none of them who can be nominated for the Nobel Prize will be soft persimmons, and they must all have made significant contributions to some aspect of physics.

Tina said happily, "We're going to have to talk a lot these days." ”

John smiled and nodded, "The car that picked us up should have arrived, let's talk about it in the car." ”

David said, "Good!"

Zhou Qin smiled: "No problem. ”

Moments later, the hatch opened.

Zhou Qin chatted with several physicists and got off the plane.

On the way, several people talked about another issue, this time Zhou Qin and John stood on two different positions, Tina supported Zhou Qin's point of view, David supported John's point of view, and the two groups of people began to debate again at the place where they picked up their luggage.

Far away.

Yang Wei and Sun Tian also came over.

Sun Tian was stunned, "Who is Brother Qin talking to?"

Yang Wei couldn't cry or laugh, "Who knows." ”

Sun Tian sighed, "Brother Qin is really awesome, he has friends everywhere." ”

The two of them couldn't understand what the gang was talking about at all, they knew that it was English, but they couldn't understand any of the professional vocabulary in it, so after taking the luggage, they followed Zhou Qin and the others out of the airport.

The person who picked up the station has already arrived.

There are two cars over there.

A man from the Eagle Country holds a sign with Zhou Qin's name.

Zhou Qin walked up, "It's hard work." ”

The Eagle Country man asked, "Is it Zhou Qin?"

Zhou Qin smiled: "It's me." ”

The Eagle Country man smiled slightly, "Please get in the car." ”

Next to John, Tina and others are also going to get in the car.

It turned out to be stopped by the driver of another car.

The Eagle Country driver said, "It's Professor Tina, Professor John, Professor David, right? I'm here to pick you up from the hotel, please get in this car." ”

Zhou Qin waved his hand to them, "See you later." ”

Hans was stunned and asked, "Why not a car?"

Tina hadn't talked enough, "Isn't there a place in the car?"

The Eagle Country driver looked at Zhou Qin's car and said, "Oh, he and you are not in the same car. ”

David was also speechless: "Why? Everyone is a physicist, how nice it would be to sit together." ”

The Eagle Country driver was stunned, "Physicist? That car is not picking up physicists." ”

"Huh?" Tina was dumbfounded.

John laughed, "How is that possible!"

The Eagle Nation driver cried and laughed: "That car is the car that picks up the Nobel Prize in Literature candidates." ”

David was stunned and said, "Nobel Prize in Literature?

The Eagle Nation driver wiped his sweat, "It can't be wrong." ”

Tina preconceived notion said: "He's obviously a physicist, and we talked all night about the frontiers of physics!"

"I just looked at the sign. The Eagle Country driver smiled bitterly: "That person's name is Zhou Qin, right?"

John was dumbfounded: "Yes, it's called Zhou Qin!"

The Eagle Country driver coughed: "Then you can't be wrong, he is a candidate nominated for the Nobel Prize in Literature, don't you know him? ”

Fighting?

Dou Po was written by him?

John, Tina, and David almost spewed out a mouthful of old blood!

The audience in the live broadcast room almost died of laughter.

My day, a candidate for a literary award and a candidate for a physics prize talked so much, the key is that they actually believed it.

We talked about physics all the way!

You're telling me now that he used to be doing literary work!?

Are you sure you're not kidding us!?

Looking at the business car carrying Zhou Qin away, several people were messy in the wind!