Chapter 165 He is so pretentious that he can’t be stopped! (33, plus more)
"at present!"

"The most successful theory of mankind today is the Standard Model, which unifies everything in the universe into 61 kinds of fundamental particles, including fermions, electrons, quarks, neutrinos, and force-transmitting bosons, such as photons, which can mediate the electromagnetic force between two electrons."

"But the standard model does not include the theory of gravity, and the best explanation of the theory of gravity comes from general relativity." The middle-aged man on the stage stood in front of the blackboard, lecturing on the course while writing the corresponding formula on the blackboard. He continued, "At this point, you will feel that the curvature of space-time is mediated by the boson of the graviton on the quantum scale."

"but."

"When gravity is quantized, the calculation results will have an infinity problem that cannot be eliminated. All gravity cannot be quantized." The expert turned around and said seriously: "It has something to do with renormalization. Let me explain the mathematical logic of renormalization."

The middle-aged expert spoke eloquently, and the students in the audience were all paying close attention. Although this course was not that important, it was very interesting. After all, string theory is currently the only theory that can quantize gravity and unify matter and interactions.

Yan Xiaoxi also listened very carefully. Although her interest is in condensed matter physics, many important physical and mathematical methods generated by string theory are applied in many other fields, including condensed matter theory.
Not bad
This trip was not in vain, I was able to hear such important content.

Yan Xiaoxi didn't want to come originally, but she couldn't resist someone's coaxing and deception. After reporting to No. 2 Middle School, she hurried to the teaching building of the Physics Department of Fudan University and randomly sat in on a class. She never expected that she had come to the right place.

Listen, listen
I couldn't help but glance at the stinky man next to me out of the corner of my eye. It would have been fine if I hadn't looked at him, but as soon as I saw him, I broke down emotionally. He...he actually fell asleep while sitting.

Depend on!
You coaxed and tricked me into coming here, but you were sleeping soundly!
The beautiful girl suddenly became angry and stretched out her hand to strangle the stinky man to death, but she was afraid of making any noise that would affect the lecture of the expert on the stage. In the end, Yan Xiaoxi could only pretend that she saw nothing.

in fact
This can't be entirely blamed on Chen Xiaoxin. He found that slacking off here is five times more efficient than slacking off in high school. It takes five days to slack off here in No. 2 Middle School. He had no choice but to take the risk.

Before I knew it, the class was over. Some students went to the toilet, some chatted, and the teacher unscrewed the thermos cup and drank the wolfberry tea inside, but his eyes were fixed on the corner of the multimedia classroom.
These two people should not be students of the Department of Physics. They don't look alike. But then again, why does this boy look familiar? It seems like I have seen him somewhere before. But the question is, have I ever seen such a silly boy?

"It hurts"

At this moment, Chen Xiaoxin was being twisted on the thigh by his future wife, and begged for mercy with a painful look on his face: "I'm wrong, I'm wrong. Please let go."

"It hurts so much, you bastard!"

"You tricked me into coming here to attend the class, but you ended up sleeping soundly." After all, he was her husband. Yan Xiaoxi let go of his hand and complained angrily, "If you want to sleep, then go home and sleep. Why do you have to sleep in the classroom?"

"You do not understand"

“This is the atmosphere we want.”

Chen Xiaoxin yawned and asked lazily, "What did the expert say?"

“Renormalization group theory.”

"A mathematical tool used in theoretical physics to examine the changes in physical systems at different length scales." Yan Xiaoxi curled her lips and said calmly, "Later he should use the renormalization method to solve the perturbation divergence problem in electrodynamics so that the theory can remain consistent at different scales."

"Oh"

"What did I think?"

Chen Xiaoxin yawned again and muttered to himself, "To be honest, this place is pretty good. I plan to come here every now and then to attend classes."

Come to class?
I think he is here to sleep and do nothing!
Yan Xiaoxi looked disgusted, pouted and said angrily: "Don't drag me here. I don't want to be embarrassed with you."

"no."

"Are you just abandoning me like this?"

Seeing that the beautiful and smart girl was unwilling to come together, Chen Xiaoxin immediately became angry. There are two different concepts of slacking off with Yan Xiaoxi and without Yan Xiaoxi. She is like a very important BUFF, which can increase the slacking off value by 50%.

she is not here.
This fish was not caught in vain!
"roll roll roll"

"Don't touch me." Yan Xiaoxi blushed and said don't touch me, but she held his hand tightly, showing her hypocrisy to the fullest extent, and muttered: "I don't want to come. Come by yourself."

After much persuasion, Chen Xiaoxin finally gave up and refused to come. However, he only came for half a day.

at this time,

The bell for the second class rang.
Chen Xiaoxin seemed to have been equipped with a sensor. He instantly wilted when he heard the bell for class. He sat there lifelessly, his eyes full of emptiness and confusion.

Started again
I really want to open his head and see what's inside!
Watching him transform from a normal person into a terminally ill person in the blink of an eye, I wanted to beat him up for a moment.

"Now it's time for free thinking." "Let's discuss the dispersion theory of light propagating in a medium." The expert said seriously while writing on the blackboard: "It's mainly about calculating the response of electrons to linearly polarized plane waves."

"first."

"We assume that the light wave interacts with the electrons in the atoms bound by the simple harmonic potential. Then, please come up with a complete physical model. Then, what I want to ask is that when the amplitude of the electric field of the wave is Eo and the frequency is ω, the relationship between the atomic polarizability, dielectric constant and refractive index depends on ω is ω~ωo, ω＞ωo."

"What will happen at this time? Secondly, when the refractive index is less than 1, can the speed of light waves exceed the speed of light in a vacuum? Does this violate the theory of relativity?" After the expert finished writing on the blackboard, he turned around and said seriously, "This question is very interesting. I'll give you ten minutes to think about it."

After hearing what the expert said, a group of top students from the Department of Physics of Fudan University started to do various calculations in their notebooks, including Yan Xiaoxi.
Well.
According to the electron motion equation, assume that the solution is in the form of x=x0e^-iωt and substitute it into the electron motion equation.
Yan Xiaoxi was not calculating, but thinking about the whole process. However, as she thought about it, her head began to hurt. She couldn't help but pout her lips with bitterness and helplessness between her brows. She had to remember ω≤ω0 and ω＞ω0 later. Her brain capacity was totally insufficient.
He curled his lips.

Move your gaze to someone next to you.
Chen Xiaoxin: (︶ω︶) zzzZ
What a fool,
What an idiot,
Really like!!!
I was so mad at him that my whole body was about to break, but in the end I liked him even more. Oh my goodness. He is really my nemesis!
sometimes.
Yan Xiaoxi was wondering if she had Stockholm syndrome or something. The more he bullied her, the more she liked him. But when she thought about it again, it seemed that he also had this symptom. When she pinched him, he seemed to feel quite comfortable.

"How do I calculate this? When the magnetic permeability is u=u0, what is the refractive index?"

"How should I know this? This is the field of electrodynamics. I find it so hard to understand."

"I feel like I can't figure it out. The amplitude of the light wave should decay according to the prime number law in the medium, but the surface completely refracts the light wave. This..."

The students present here are all outstanding and can be said to be the chosen ones. Some of them are from the Strong Foundation Program, and some are physics competition students. If students come in through the college entrance examination, they will basically be left behind. Because in terms of professional courses, they simply cannot keep up with the pace of these geniuses.

so.
Those who can sit here and take classes are all at the top level of physics, and their mathematical abilities are equally amazing. But at this moment, these people are stumped. A seemingly simple electrodynamics has trapped these gifted people.

Of course, this problem only looks simple. In fact, many physical factors need to be considered. Even someone as strong as Yan Xiaoxi can only stop at the last light wave speed because he can't remember certain formulas.

at the same time,

The expert on the podium was drinking wolfberry water from a thermos cup while looking at the students' sad faces. He was not surprised at all, because he was there to embarrass the students. As for his purpose, he was just tired from teaching and wanted to rest for ten minutes.

"Fool."

"Idiot, wake up!"

Seeing that time was running out, Yan Xiaoxi could only release the war beast to wake up Chen Xiaoxin beside her.

"Uh?"

Chen Xiaoxin opened his eyes drowsily and looked at the beautiful female academic master with a silly face.

"Look at the question above about electrodynamics. Calculate the response of electrons to linearly polarized plane waves. Can you calculate the speed of the light waves behind it in your head?" Yan Xiaoxi asked hurriedly.

Chen Xiaoxin rubbed his eyes, looked carefully at the electrodynamics problem on the blackboard, then yawned and muttered, "It's quite simple."

Since he had just woken up, his voice was a little loud. Everyone looked at him.

Simple?
Who are you?
All the chosen ones present were very dissatisfied. Who gave him the courage to say it was simple?

Jingru?
Jingru can’t do that either!
Simultaneously,

The experts on the podium were also stunned. They looked in the direction of the voice and were stunned when they saw that it was Chen Xiaoxin.

Isn’t this the student with such a wise face?
Did he just say it was simple?
"classmate."

"Come up"

The expert waved at Chen Xiaoxin and said with a smile, "Come and take care of it."

Yan Xiaoxi:!!!∑(°Д°ノ)ノpanicing
teacher!

Don't call him!
Back to shore!

When this guy starts to show off, even gods can’t stop him!

(End of this chapter)