I just want to be a quiet scholar

Chapter 96 Mysteries in NaCl Crystals
"Hey, Shen Qi, don't lower your head to play with your mobile phone! Do you have the most basic table manners?" Sun Erxiong glared at Shen Qi. After the speech, he found Shen Qi, who was inviting Shen Qi to eat buns at the school outside shop.

"Professor Sun, you are really good. You taught Yunshen and Weishen?" Shen Qi put away his phone and asked. .

"At that time, I was in charge of several basic undergraduate courses for their mathematics students, and there were many teachers who taught them, and I was only one of them." Sun Erxiong said.

Shen Qi: "Arrange me to meet with Yunshen and Weishen alone. They rarely come back to China, and I happened to bump into them again."

"In the future, you will have a lot of opportunities to meet Yunwei and Gong Changwei, so don't be in a hurry." Sun Erxiong said, and then he asked again: "During the training at the Golden Autumn Camp last year, I suggested that you engage in physics, learn computer science, and expand your knowledge. How good are you, you actually came to participate in CPhO? Shen Qi, are you trying to betray the Department of Mathematics?"

"Hey!" Shen Qi slapped his thigh and suddenly realized: "Yes, I'm here to participate in the competition! Professor Sun, if you don't mention this, I almost forgot."

"That's it." Seeing that Shen Qi didn't seem to be pretending, Sun Erxiong said, "Actually, it's also possible to play the game, so you can hurry up and prepare for the battle. You're here, and you have to win a grand prize no matter what."

Shen Qi returned to Yan's dormitory, a four-person room, and he had three roommates.

Although this Nanyue Provincial Sports Team competes in the name of the province, in fact, each high school plays its own game.The situation is similar in other provinces.

Looking at the list of the national training teams in the past ten years, more than half of the players of the national team are from several powerful provinces, or more than a dozen high schools in these provinces.Now this trend is becoming more and more obvious. Another term for the National Physics Competition for Middle School Students is "National Famous High School Competition".

Similar to shujing, the members of the national training team of wujing will naturally have a bright future. They are the sweet pastry in the eyes of famous universities.

The 12 national finalists of the Nanyue Provincial Sports Team came from five high schools in the province, including 4 from Hua Affiliated High School, 3 from Special Zone Middle School, 2 from Provincial Real Estate, 2 from Shimen Middle School and 1 from Nangang No. [-] Middle School.

Four people share a room, and the four Huafu team members live in the same dormitory.

Southern Guangdong Province has the strength to compete with the top high schools in the country in terms of competition.

The District Middle School is definitely more famous than the District University. Although only three people came to the CPhO National Finals, they took the elite route. All three were high school sophomores. The three of them participated in the CPhO National Finals when they were in their first year of high school last year. to the National Awards.

Of course, the three people in the special zone middle school also lived in the same room, and this dormitory had an extra bed for Shen Qi.

He has not experienced the training mode in the province, so Shen Qi is not very familiar with the three roommates from the special zone middle school.

The three roommates knew Shen Qi's identity, a gold medalist with IMO full marks.

The three academic bullies from the special zone are also people who have seen the world. The three of them did not show excessive enthusiasm for Shen Qi, nor did they feel cold.

Everyone gets along with each other in a friendly and polite manner. From time to time, they discuss a few physics competition questions and meet friends with questions.

Since listening to Yun Wei and Gong Changwei's speeches, Shen Qi's heart has not been able to completely calm down.

The Langlands program is of course awesome. This is a purely mathematical program. Number theory and geometry form a unified new mathematical rule. Who is qualified and capable of formulating rules?is God.

But it is undeniable that the Langlands Program is a road with no return. Once you embark on this road, you will either become a god or a ghost.There is no one way to go to the black mentality, it is best not to study this thing in depth, it is too difficult for one person to fight alone on this road.

Shen Qi's involvement in physics is to leave a way out for himself. The research directions involved in mathematics + physics are much broader, and there will always be a way to survive.

"Shen Qi, you seem to be absent-minded?" Mu Rong asked.

Today is May 5, and tomorrow will be the theoretical test of the CPhO national finals. Mu Rong and Shen Qi are eating in the cafeteria of Yan University.

"A little nervous, a little confused." Shen Qi said.

"You're also nervous and confused?" Mu Rong smiled, and then said sternly: "Don't joke with me, Shen Qi, tomorrow is the main race, why do I think your state is a little abnormal?"

"I'm so tired." Shen Qi sighed.

"Xueba is like this, I can understand."

"Tired."

"Come on, Shen Qi eats fish to nourish his brain."

"Before the 19th century, Gauss, Euler, Riemann, Cauchy and other bigwigs basically completed the mathematical branch of this research, and the 20th century belonged to Poincaré, Hilbert, Kolmogorov, Grotten Dick and other modern big cows, in the 21st century, where is our way out? Ah, Mr. Mu, tell me, where is the way out?" Shen Qi held his head, looking very distressed.

"I'll go..." Mu Rong was at a loss for words, "Shen Qi, is this why you are tired?"

"alright."

"I don't know where the way out is for mathematics in the 21st century? As soon as I am a Ph.D. in astrophysics, I am still confused!" Mu Rong asked the sky silently, and reminded Shen Qi solemnly after finishing the matter: "Hey, tomorrow morning, I will take the exam for the national competition. The theory question is over, I beg you Shen Xueba, can you calm down and forget about mathematics for the time being? You are my only child, the only child in the whole school!"

"The competition for the national competition, let's go with the flow."

"..."

Mu Rong was very worried. She found that Shen Qi was a little abnormal. She had known this before, so she would not go out with her girlfriends these few days. She stared at Shen Qi to see what he had done these days and where he went. Who have you been in contact with? On the eve of the CPhO National Finals, Shen Qi, you are talking to me about the new program of mathematics. Have you been brainwashed by someone?

On the morning of May 5, the CPhO National Finals Theory Test will begin soon.

08:30 to 11:30 is the exam time, three hours.

During the May [-]st holiday, when the college students did not attend classes, Yan Da vacated a teaching building for the theory test of the CPhO national finals.

At 8:30, the theory test officially started.

The theory test paper has a total of eight questions, all of which are calculation questions. Each question has the same score of 35 points, and the total score of the paper is 280 points.

Shen Qi's answering progress is not fast, to be honest, this test paper is quite difficult.

In the first hour, Shen Qi did two questions.

As for the third question, Shen Qi pondered for half an hour without writing.

The title of the third question is written as follows:
"In a NaCl crystal, the sum of the interaction energies between ions can be expressed as:

Ep=N(am/rm-αe^2/4πε0r)
Among them, N is the number of positive and negative ion pairs in the crystal, which is a large integer; r is the distance between adjacent positive and negative ions; e is the electron charge; am, α, m are constants; the minimum value of Ep is called the binding energy.

Try to find: the values ​​of am, α, m. "

If it is not a physics master, this question may not even be understood.

Below the question, the questioner gave some reference formulas and useful physical constants:
(1+x)^β=1+βx+1/2!*β(β-1)x^2+1/3!*β(β-1)(β-2)x^3+……

According to Boltzmann statistics, C is a coefficient that characterizes the linear expansion of the crystal

C=-3NkA^3/4A2^2
The relevant physical constants are: e=1.6×10^-19C;

ε0=8.9×10^-12C^2/（Nm^2）；k=1.38×10^-23J/K
……

If you don't understand the question stem, the above mathematical formulas and physical constants are given for nothing.

"This question is solid state physics, a very annoying branch." Shen Qi reviewed the question for half an hour, and finally found an idea.

Solid state physics is a branch that studies the physical form, microstructure, and the use and interaction of microscopic particles in solids.

Kind of tricky.

(End of this chapter)