Chapter 24 Junior high school classmates May 5th, it’s another weekend. Xu Qingzhou has already started writing his paper, "On the Application of Euler's Formula in Wave Function Representation." Euler's formula is an extremely important formula in mathematics, and wave function is a core concept in quantum mechanics, used to describe the state of microscopic particles (such as electrons, atoms, etc.). He took advantage of a trick, which was a method he used to like to use, but he had already published many papers and books, and his focus was basically on quantum mechanics, so he did not make corresponding summaries. Outside the library. Xu Qingzhou leaned against the wall and lit a cigarette. This is a habit I have developed over the past decade. When I am doing an experiment or solving a problem, I stand outside and smoke a cigarette to relieve my fatigue. Quitting smoking has to be done gradually. If I smoke this one again in May, I will cut off my hand. Squinting his eyes, he deduced the function in his mind. Among them, |E and |E represent the two energy levels of the system respectively. The complex coefficients C(t) and )C(t) are assigned specific values. Assume that at the initial time t = 0, the system is in an equal probability superposition state. Finally, we can analyze the evolution of the quantum state over time by utilizing the properties and operation rules of the exponential function. Well, the intermediate derivation should be completed.
In May, the wind is a bit warm at night. It is just eight o'clock now and there are a lot of people on the street, most of them are nearby residents who have just finished their meal and are out for a walk. "Xu Qingzhou?" Halfway through smoking a cigarette, he suddenly heard a scream from behind him. Thinking that it was an acquaintance from Wutong Community, Xu Qingzhou subconsciously wanted to put out the cigarette, but then he felt something was wrong. He turned around and saw a girl standing in front of him. She is about 1 meters tall, wearing a white emerald flower dress. Her skin is fair and her long, white legs are exposed. Although her appearance cannot compare with top beauties like Song Yao, she can definitely be described as "pretty and pretty". He looked familiar, but he couldn't remember when he had seen her before. After confirming that she was not from the community, he was no longer nervous. He took a puff of cigarette and asked, "Who are you?" "I'm Tian Shuang. It's only been three years, and you've forgotten me?" the girl asked suspiciously. Oh~ As soon as the other party said this, Xu Qingzhou woke up as if from a dream, and all his memories came flooding back. This girl was his deskmate in the third grade of junior high school. After graduation, she followed her family to go to school in Shanghai. The memories are recalled, but they are not very good. In junior high school, Xu Qingzhou was as dull as ever. He was short, ugly, and the only thing he did well was his academic performance. Tian Shuang often made fun of him. Tian Shuang looked at the cigarette in Xu Qingzhou's hand with a surprised expression: "Xu Qingzhou, I haven't seen you for a few years, and you actually learned to smoke." "Yeah, I like to have one when I'm depressed." Xu Qingzhou answered casually. "Xiao Tian." At this moment, a boy came over with two bottles of water, looked at Xu Qingzhou vigilantly, helped Tian Shuang unscrew the bottle caps, and asked, "Who is this?" The boy was about the same height as Xu Qingzhou, but his appearance was different from Xu Qingzhou. Tian Shuang took the water and introduced him to the boy, saying, "This is my junior high school classmate. We were deskmates for a year. At that time, I and several other girls liked to tease him." Hearing this, the boy's vigilance suddenly decreased a lot. Just from the tone, one could tell that Tian Shuang looked down on boys like this. "Boyfriend?" Xu Qingzhou looked at the boy. When Xu Qingzhou asked if she was his boyfriend, the boy's eyes lit up and he looked at Tian Shuang with some anticipation. "No, my friend came back with me this time." Tian Shuang shook her head, as if she didn't want to talk more about this topic. "I haven't been back for three years. I didn't expect that Rongcheng has changed a lot."
"It's quite big." Xu Qingzhou nodded in agreement. Tian Shuang sighed and said with emotion: "It's great to meet old classmates. I was just regretting that I didn't go to Kyoto Institute of Technology." "Kyoto?" "Yes, the school organized a two-day visit." Tian Shuang kept talking, and Xu Qingzhou would occasionally join in. It was mainly because Tian Shuang kept chattering, and her words revealed the sense of superiority of returning home from a big city with wealth and success, which gave him a headache. He wanted to leave but couldn't bear to give up the cigarette he had just lit. Within two minutes, he was forced to accept all of Tian Shuang's information. Tian Shuang's grandmother was sick, so she came to visit her on the weekend. As for this boy, his name was Wang Jiangfei, and he was Tian Shuang's classmate. They had known each other since childhood, but they moved to Shanghai when they were in elementary school. After Tian Shuang moved there, the two happened to be assigned to the same class again. Tian Shuang's grades are pretty good and her college entrance exam goal is Kyoto Institute of Technology. After talking for a while, Tian Shuang began to ask Xu Qingzhou which school he planned to apply to. Xu Qingzhou said perfunctorily that he was not sure yet and he might just pick a random school. He did not want to argue too much. If he said that he could get 700 points, Tian Shuang would probably have more questions. Tian Shuang thought Xu Qingzhou's grades were not good, and was a little surprised: "You studied so well in junior high school, and you were in the rocket class of Chengnan Middle School, why did you set your goal in Kawauchi?" "Well, let's wait and see after the results come out." Xu Qingzhou answered casually. He was no longer at the age where he could feel superior to high school students. Next to Tian Shuang, Wang Jiangfei smiled happily and said earnestly: "Actually, you don't have to be discouraged. The college entrance examination is just the first test in life. As long as you work hard after entering college, you can catch up with others." "Maybe." Xu Qingzhou remained noncommittal. He no longer had any desire to continue the conversation. His words sounded like encouragement and comfort, but in fact, they were condescending and hypocritical, which was disgusting. (End of this chapter)