Chapter 256: OK, it’s time to get old Xu Qingzhou was calm and composed, eating the food with great relish. Xu Zhengyang had a weird look on his face, as if he was slapping himself for always giving Lao Xu an excuse to show off. Kong Xianbo shook his head and sighed in his heart. Lao Xu is still Lao Xu, and the taste is very authentic. Chen Shiqi covered her mouth and laughed, seeming to understand the depression that Xu Zhengyang mentioned, and asked: "Why are you alone? Where is Song Yao?" "She had lunch with her roommate at noon, and get out of class just ended at this time." Xu Zhengyang was puzzled: "It's already exam week, and there are still classes in the School of Economics?" "This is the last class. It will be over after it." Kong Xianbo said while eating. As soon as he finished speaking, everyone's eyes turned to him. Xu Qingzhou narrowed his eyes. Last time they had dinner, he and Teng Xiaojuan were talking very enthusiastically: "Old Kong, how do you know so much about economics?" "Lao Xu, you don't know how often Lao Kong and Teng Xiaojuan chat."
"She just asked me a few math questions." Kong Xianbo adjusted his glasses and defended himself, but he hadn't said anything more: "This girl's math is really terrible. For some questions, she can solve them with just a little bit of brainpower." Tired. "You don't have to explain to us, we all believe it." Although Xu Zhengyang said this, the look of astonishment on his face made people who didn't know think that Kong Xianbo and Teng Xiaojuan were already dead. "Teng Xiaojuan is actually a nice person." Xu Qingzhou said seriously. "Yes, I also think it's a good match with Lao Kong." Kong Xianbo shook his head: "Teng Xiaojuan and I were just discussing math problems." Although he said this, Kong Xianbo felt a little bit disturbed in his heart, as if...it's not impossible? Many romances seem to originate from the instigation of friends. After teasing Kong Xianbo, everyone started talking about their recent review. For example, how difficult the questions are, how many people failed in the last exam, etc. After reviewing, Xu Zhengyang began to imagine the wonderful life after the exam. "Once I get through this exam safely, I must relax and go traveling." Xu Qingzhou had almost finished eating and asked, "Where are you going?" "I'm planning to go to the northwest, Duku Highway. I see videos of that place every day, and I've wanted to go there for a long time." Xu Zhengyang said, paused, and said, "Lao Xu, don't you want to go out and have some fun?" "I can't go. I don't have time." Xu Qingzhou looked helpless. "Summer vacation is 40 to 50 days long." "I have to go to Switzerland in August to participate in an experiment. I don't know how long I will be busy. Sigh, sometimes I think you guys are the best." Xu Qingzhou was really a little emotional. After he finished speaking, he saw Xu Zhengyang and the others showing disgusted expressions, and added: "This time I am definitely expressing my true feelings." "."
Haha, you're obviously just showing off. Fortunately, those who are being bullied have become accustomed to it. "." Xu Qingzhou coughed lightly, stood up, and prepared to go back to the library. "You guys eat, I'm leaving." Could it be that these guys have psychological trauma because they pretended to be too cool in the past? After Xu Qingzhou came out of the cafeteria, he went straight back to the library and continued with his morning analysis until 4 pm. After finishing the analysis, he packed up everything and sent it to Professor Zhao. Then I took out my phone, checked Weibo and relaxed for two minutes. Wow, someone else announced that he had proved the Polignac conjecture. In the private messages, everyone mentioned Xu Qingzhou and asked him to take a look and give his opinion. Still domestic. Zhou Lei, a mathematics enthusiast, seems to be a folk scientist. Xu Qingzhou lost interest instantly. In the forums of amateur scientists, it was common to see the collapse of the physics building today and the collapse of the mathematics building tomorrow. However, Xu Qingzhou found that there was relatively little knowledge about this in chemistry. Maybe if chemistry is not handled properly, the building will really collapse? Weibo is too boring, so I might as well look at the school beauty Song across the street. School beauty Song was lowering her head to do a math problem. While thinking, her long eyelashes trembled a few times, her expression was cold, and a few strands of hair fluttered around her ears, and she quickly hooked them behind her ears. As if she realized that Xu Qingzhou was looking at her again, Song Yao looked up and made a warning gesture of digging out her eyes at him. Xu Qingzhou curled his lips, sighed, and took out the information about Polignac's conjecture. You have to endure the girlfriend you find yourself. The rainy Monday passed and the rain stopped on Tuesday. In the morning, Xu Qingzhou received a call from Director Ji, asking him to report to the Institute of High Energy Physics of Peking University. Here, he met Yang Bing, the head of the Xia Guo experimental group in August, an old academician with some gray hair on his temples. "Academician Yang." "Xiao Xu." Academician Yang was very kind. He waved his hand and motioned Xu Qingzhou to sit down and talk. In addition to Academician Yang, there is also a doctoral student named Zhang Changqing. Zhang Changqing looked at this talented junior fellow student curiously. His appearance was just so-so, just a little handsome. He was indeed quite good-looking. The most important thing was that he was a genius in mathematics and physics. The back wave of the Yangtze River pushes the front wave, and the front wave dies on the beach. Academician Yang asked: "You are very knowledgeable in quantum mechanics. You should also be familiar with particle physics, right?" Quantum mechanics is the basic theory that describes the behavior of microscopic particles, while particle physics is the branch of physics that studies these microscopic particles and their interactions, such as electrons, protons, neutrons, etc.
Quantum mechanics provides the theoretical basis and framework for particle physics, enabling particle physicists to understand and explain various phenomena in the microscopic world. Therefore, as long as you study quantum mechanics, you will inevitably come into contact with particle physics. “I’ve studied it before.” Xu Qingzhou nodded and said that he was indeed interested in particle physics, but he was not very deep in it and could not compare with the top experts. However, he still had some basic knowledge, after all, he had communicated with many particle physicists before. Dean Feng nodded, handed something on the corner of the table to Xu Qingzhou, and said, "Here are three questions. Try to do them." What he wanted to do was to test Xu Qingzhou's level first, and then see how to arrange the information he needed to read during this period of time. "I'll try my best." Xu Qingzhou knew that Academician Yang wanted to test him. It was the same old part again. He really didn't want to show off, but. Zhang Changqing thought to himself that the teacher was making things difficult for him. This question was prepared by the teacher for the new student. Although Xu Qingzhou was very good, that was mathematics and quantum mechanics. Quantum physics and particle physics seem to be closely related, but in fact, there are great differences in the actual research areas. His junior fellow disciple in the sect hadn't used it yet, but Xu Qingzhou ran into it. I feel a little sorry for this junior brother. Zhang Changqing smiled and said, "Junior brother, don't be shy. If you want to drink water, just pour it yourself over there." "Okay, thank you, Senior Brother Zhang." Xu Qingzhou nodded and began to look at the questions. First question: From the valence quark structure of mesons, K*° is a (sd) composite state with J=1, and D* is a (sd) composite state with J^P=1. Seeing Xu Qingzhou start to solve the problem, Academician Yang did not wait and continued to extrapolate the data with Zhang Changqing. This is an easy question and can be solved in a few minutes. Xu Qingzhou skipped question 1 and looked at the next question, thinking about how to solve it in his mind. The second question is about the standard model particles and requires building a model of the coupling between supersymmetry breaking and inflation. The third question is about superstring theory. Let us consider, within the framework of superstring theory, a spacetime structure with an additional compact dimension, in which there exists a symmetry breaking mode of a specific gauge group (such as E8 or F4) that does not directly correspond to the gauge group SU(3)×SU(2)×U(1) of the Standard Model in the low-energy limit of four-dimensional spacetime. This question is quite basic and requires solid knowledge of superstring theory, supergravity theory and higher-dimensional space-time structure. First construct the symmetry breaking path, then the extra dimensional geometry and moduli space. Xu Qingzhou thought clearly, picked up the pen, and quickly immersed himself in calculations. 20 minutes passed. "Yes, here, based on your model predictions, several possible experimental observation signals are proposed. For example." Academician Yang then noticed that Xu Qingzhou, who had been lying on the table calculating, had stopped and seemed to be waiting for him. "Xiao Xu, this is a bit difficult, don't be discouraged. These three questions were originally assigned to a new doctoral student." “It’s done.” "Ok?" (End of this chapter)