Scholar’s Advanced Technological System

time flies.

On April 20th, Academician Lu returned to National Quemoy University from Shanghai for a meeting. After the meeting, Lu Zhou went to the office.

When Lu Zhou entered the door, the old man looked over and asked with a smile.

“How is the preparation?”

Lu Zhou: “It’s almost… I’m looking forward to the profession.”

Academician Lu: “Is it almost? That’s OK, I will test you two questions at will.”

As he said, he pulled the drawer open and pulled a piece of a4 paper from it and placed it on the table.

“The pen is here, take the past to write?”

Lu Zhou took the pen and paper and looked at the subject above. The brow twitched.

Say good two questions, three words on the paper clearly.

And to say that a good test, no matter which question is not as easy as it is…

Academician Lu smiled and asked: “Why, can’t you understand?”

“How come,” Lu Zhou laughed, looking at the subject, with a thoughtful expression on her face. “It just looks a little too easy.”

Lu Academician laughed and didn’t talk. He lifted his legs and waited for him to write.

Not easy?

This is easy, what do you mean by the test?

How do you say that he is also an academician, a graduate student with an academician, can you be the same as a graduate student with a general professor?

These topics were not originally for postgraduate students, but when he recruited doctoral students, he took a look at the professional knowledge of those interviewers.

Three questions can be made in two ways, that is, qualified, and if the three questions can be made in three ways, then it can be said to be excellent.

The four doctoral students he brought with him were all able to make three questions. Although the topics examined are not the same, the level is similar.

Just as Academician Lu waited for Lu Zhou to write, Lu Zhou had quickly passed all three questions and then looked forward to the first question, which was the easiest question for him.

The first question is to examine group theory.

However, it is not the group theory on the theory, but the group theory in the quantum mechanics.

Since the “group theory” branch of mathematics was created independently by the mathsmatics family before the emergence of “quantum mechanics”, it was not created by the Physics and mathematics families like “micro-integral”. Therefore, group theory is an “important product” for physics workers. It is difficult to learn and not easy to use.

However, for Lu Zhou, who was born “mathematics physics” and re-entered “mathematics physics”, it was not so difficult to deal with.

[A group theory explanation of the accidental degeneracy of hydrogen atomic energy levels]

The topic is short and the amount of information is not small.

The phenomenon that the degeneracy of hydrogen atoms is higher than that of ordinary atoms is called “accidental degeneracy.” However, traditional quantum mechanics cannot explain the phenomenon of accidental degeneracy until the introduction of group theory makes this phenomenon theoretically explained.

Closing his eyes, Lu Zhou recalls the knowledge of quantum mechanics he has learned in his mind, recalling everything about hydrogen atoms.

Then, use the methods of mathematics to build the model…

Opening his eyes, Lu Zhou took a deep breath and finally picked up the pen and wrote it on paper.

[Let the hydrogen atom Hamiltonian be H=P2/2μ-Ze2/r……]

[In the case of Coulomb potential, there is a Runge-楞 vector in the system, recorded as M’=…]

[The eigenvalue of the group Casimir operator C=…]

[…]

Seeing the speed at which Lu Zhou was doing the problem, Academician Lu’s eyebrows picked up slightly.

He originally thought that Lu Zhou had to spend at least twenty minutes on this question to think about it. I didn’t expect him to have already written it.

Moreover, the idea is completely correct.

Originally, he also planned to put two mouths when Lu Zhou couldn’t think of it, but now it seems that it is no longer needed.

Seeing the answer, Dr. Lu’s mind silently nodded.

The first question, correct!

Did not pay attention to see the expression on the face of Lu Academician, Lu Zhou continued to focus on the next topic.

The second question is about some of the problems of Dirac’s cavity theory in quantum field theory. It examines the understanding of Dirac’s equations and some theoretical knowledge about field theory.

This kind of pure theoretical knowledge is not difficult for Lu Zhou. Under the guidance of drug guidance, what I see is basically not forgotten.

For him, this is a sub-question for the first question that needs to be thought about for a while.

Without stopping, Lu Zhou quickly wrote a pen to answer various theoretical questions raised in the topic in a discourse.

Seeing that Lu Zhou made this question, Lu’s face showed a gratifying smile.

Yes, he did not look away.

This kid is a good seed for studying theoretical physics. With his innate talent, he is even more hopeful than his four doctoral students.

If the school had not given him a talent development plan for a higher platform, he even thought about it, and let him just count it on his own.

Of course, he just thinks about it, and he also supports scientific research and nutrients on a higher platform. He also supports it.

Solved the second problem, Lu Zhou continued to look towards the third question.

However, when he saw the third question, he squatted.

The third question is a topic about “string theory.”

The so-called string theory mainly attempts to solve the two main Physics theory of surface incompatibility, that is, the contradiction between quantum mechanics and general relativity, and wants to create the “10,000 physics” that describes the whole universe, that is, the legendary “1st year”. Theory.”

In a word, the discovery of this theory has a lot to do with mathematics.

Vineckino, who works at the CERN, originally wanted to find a mathematical formula that describes the strong forces in the nucleus. The result was an Euler formula with 200 years in an old mathematics book. It was unexpectedly found that this formula can successfully describe the strong force he requested.

This sounds a lot like the plot in a martial arts novel, but the truth is such a coincidence.

Under such a coincidence, the embryonic form of string theory was born.

Including the later wave color string theory, superstring theory, and the famous M theory of “unification of rivers and lakes” proposed by Edward Witten, all developed on this basis.

Creating an “1st year formula” that describes everything in the universe is almost the ultimate goal of theoretical Physics.

However, what is more embarrassing is that the development of string theory in China is in a very embarrassing situation.

The condensed matter physics itself stands on the opposite side of the theoretical Physics. The theoretical Physics community seems to be reluctant to accept this “mathematics freak”.

Even the leader of the domestic theoretical Physics, Yang Lao mister, one of the most influential physicians in the world today, expressed his disapproval of string theory. On the contrary, it is the domestic mathematicals world, and accepts and accepts the string theory. For example, Qiu Lao mister, “cross-border” to the string theory “like”.

However, what makes Lu Zhou somewhat unpredictable is that this third question is not a knowledge point of string theory, but a question of his own opinion on string theory.

view?

What is the theory? Or is it a view of the development of theory?

Is this a subjective question?

The nib stopped on the paper for a long time, and Lu Zhou, who had passed the road to the last level, was a little lost.