National Top Stream

[In topological string theory, the mirror symmetry of n=2 connects two geometrically different cabi-yau manifolds as string compactifications, giving an equivalent physical model.One of them is the a model determined by the kahler module parameters, and the other is the b model determined by the complex structure parameters...: z and denote the closed string module parameters and the open string module parameters respectively.Therefore, the four-dimensional effective overpotential can be expressed as a linear combination of relative periodic basis vectors

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Professor Witten was writing on the small blackboard with a pen, while Feufman and Zhang Shouwu next to him looked at the small blackboard while drinking coffee.Lin Sen was just called by Director Zhou to do odd jobs. He said he was doing odd jobs, but he was actually acting as a waiter.Make coffee and place snacks in front of the big guys.

But he still did it with great enjoyment, what a joke, he finally had a chance to show his face in front of the boss, if he couldn't catch it, he wouldn't be a fool anymore, he would be mentally handicapped.So even though he was a waiter, he was still very happy. Zhuang Weiran asked for a glass of juice instead of coffee.I looked at the questions on the blackboard and thought for a while.

He pondered and said, "We take advantage of the advantages that the open and closed string modules in the f-theory duality of type ii string theory are equivalent to the parameters of the complex structure, and the information such as the complex structure is completely contained in the combined data of the compactified four-manifold of the f-theory. A complex d-brane system including two d-branes. The parallel phase region and coincident phase region of the d-brane system correspond to the u(1)x...xu(1) and u(n) non-abelian gauges on the d-brane world leaf respectively Theory. 2"

Who is Edward Witten, the founder of the theory, an internationally renowned theoretical physicist and mathematician in physics and mathematics, and a winner of the Fields Medal.His research covers many directions of high-energy physics and mathematical physics, and he is best at combining modern mathematics with cutting-edge issues in physics research."Superstring Theory," which he co-authored with professors Green and Schwarz, has been the bible of string theorists since its publication.It can be said that he is one of the top theoretical physicists in the world today. Discussing theoretical physics in front of him, especially string theory, is simply playing tricks in front of Guan Gong.

Lin Sen listened for a long time, a little confused, more puzzled.The discussion between Zhuang Weiran and Professor Witten was very intense, and Professor Feffman and Zhang Shouwu were drinking coffee beside them.One of the two is an expert in dynamics, and the other studies mathematics.Professor Witten is not as good at theoretical physics, especially in high energy physics.Zhuang Weiran had a very good chat with Professor Weiteng, and it could even be said that they were about to quarrel.

Director Zhou was wiping his sweat beside him, what happened to these two?Didn't you just talk in a friendly way?Why did they start arguing all of a sudden? From the looks of it, they might fight again later, right?

He was still thinking about how to stop the two of them, but they became more and more violent.

Lin Sen was reducing his sense of presence. The quarrel between the two professors was too intense.The small blackboard was erased and erased many times.You come and go, Professor Witten finally said, "Zhuang, you seem to know a lot about superstring theory."

Zhuang Weiran said with a smile, "It is said that string theory and loop quantum theory are the most likely to become the theory of everything, but I don't think so."

"Oh?" Professor Wei Teng looked at Zhuang Weiran, "Zhuang, what do you mean?"

"Professor Weiteng, you can wait a little longer, maybe you will discover something new in a short time." Zhuang Weiran said confidently, "As for me, I am not too interested in string theory and loop quantum theory."

"Really?" Professor Wei Teng raised his brows, "So Zhuang, what do you mean?"

"Do you want to create a theory of your own?"

"Maybe." Zhuang Weiran glanced at the time, "The main problem of The Theory of Everything is to quantize gravity. Both string theory and loop quantum theory are the most successful theories in quantizing gravity. But after so many years, the theory of everything Theory is still a fantasy, and I don't think string theory and loop quantum theory will become a theory of everything."

"I'm looking forward to it." The discussion this time can be said to have broken up badly. "Perhaps, one day in the future I may do a theory of everything, but it's definitely not now."

"Sorry, Professor Witten. I can't accept string theory, nor can I accept loop quantum theory." Zhuang Weiran said apologetically, "Maybe I will start from other places."

Professor Weiteng looked at Zhuang Weiran. He saw from this young man that self-confidence and arrogance had challenged academic authority. "I'm very glad that there are people like you."

"I'll wait, since you can't accept string theory and loop quantum theory, I'm curious how you can quantize gravity." Professor Witten spread his hands, "Zhuang, you and everyone I've seen are different. Too much the same."

"Really?" Zhuang Weiran smiled, "Then Professor Weiteng can look forward to it."

"Ahem." Fortunately, the two finally calmed down, "It's getting late, why don't we go have dinner?" The afterglow of summer shone on the ground, Zhuang Weiran shook his head and said, "No need Now, I want to go back to the hotel, maybe I should give Professor Witten some surprises."

"Really?" Professor Witten said with a smile, "I'm waiting for the surprise from Zhuang."

"Lin Sen." Zhuang Weiran turned his head to look at Lin Sen who was trying to reduce his sense of existence, "You know how to drive?"

"Yes." Lin Sen nodded.

"Take me back to Zhenxing Hotel." Zhuang Weiran closed his eyes and thought for a while, "It suddenly occurred to me that I could do some research."

Director Zhou was a little embarrassed. Just as he said he was going to eat, Zhuang Weiran said he was going back to the hotel.

But he can understand that if he really has some kind of inspiration, he can go back and do it now.Moreover, Zhenxing Hotel can provide food 24 hours a day.

Director Zhou could only hold back for a while, "Professor Zhuang really doesn't eat?"

"No need." Zhuang Weiran shook his head, "I think I can surprise Professor Weiteng soon, and it will be this time next year at the latest."

Zhuang Weiran turned and left, Feufman raised his eyebrows, "Zhuang seems not interested in Mr. Weiteng's superstring theory."

"He seems very confident that he can make another theory different from superstring theory and loop quantum theory to challenge these two theories that are most likely to become the theory of everything." Professor Witten shrugged his shoulders, "I I appreciate Zhuang's courage, and I want to know what step Zhuang can make."

"I hope Zhuang won't let us down." Professor Zhang Shouwu stood up, "You two, let's go to dinner first. I have a hunch that Zhuang may not show up for a few days."

"He's always been like this." Professor Feffman shook his head and said, "As long as he starts researching, it's hard to find him."

"Director Zhou, please excuse me."

Lin Sen took the key and quickly followed Zhuang Weiran's footsteps.When they came to the parking lot, Zhuang Weiran looked at Lin Sen and said, "Not bad, Lin Sen, you already have a car."

He scratched his head embarrassingly, "It's a gift from my family. I don't have the ability to buy a car."

"Go to Xingxing Hotel." Zhuang Weiran closed his eyes after getting into the car.Lin Sen started the car and headed to the Zhenxing Hotel.He is too familiar with this place.

"Didn't Professor Zhuang learn to drive in the Lighthouse Country?"

"I don't have time." Zhuang Weiran squinted his eyes and said, "I study every day, so I don't have time to learn how to drive. Besides, I don't think I can learn it. I tried it before, and it was too difficult for me. It's still good Do your research and leave the traffic police and other vehicles out of trouble. I don't want to be a street killer."

Lin Sen said, "Professor Zhuang is so smart, there should be no problem learning to drive."

"No." Zhuang Weiran shook his head, "It's very problematic."

"Compared to learning how to drive, I'd rather save some time for research." Zhuang Weiran rubbed his eyebrows, "Thank you today, how much have you listened to?"

"Take double d-branes in the compactified space as an example, and use the language of ring clusters to concretely construct dual four-manifolds corresponding to parallel d-brane phases and coincident d-brane phases. Using type ii string theory f-theory duals, the parallel and The superpotential contributed by the d-brane during the coincidence, and the corresponding ooguri-vafa invariants were extracted respectively. 4" After finishing speaking, Lin Sen was a little embarrassed, "Professor Zhuang, I understand so much."

"There should be more." Zhuang Weiran didn't open his eyes, "Go on."

"The discrete z2 symmetry group existing between two parallel d-branes at different positions is interpreted as the Weyl symmetry of the non-perturbed u(2) gauge theory, and the parallel phase of the d-brane system also corresponds to u(2 ) Coulomb branch of the gauge theory... In the coincident phase region, the d-brane system changes from a parallel d-film phase to a coincident d-film phase, and the deformation parameter degrees of freedom in the open-closed mixed-mode space decrease, and the two independent open strings The parameters are reduced to one. 5" Lin Sen was about to cry, "Professor Zhuang, there are really only so many."

"Not bad." Zhuang Weiran affirmed Lin Sen, "Have you ever thought about going to Princeton University to study for a Ph. D? You are still very good in mathematics and physics. And you know a lot about superstring theory. , I can recommend it to you."

"How is Professor Witten?"

"Ah?" Lin Sen was stunned. He thought that Zhuang Weiran was asking him to go to his own place to study for a Ph.

"You are more suitable for Professor Weiteng, he is the top scholar in superstring theory." Zhuang Weiran looked at the scenery outside the window, "It can be seen that you are very interested in mathematical physics, especially in theoretical physics. Calculate."

"I believe that you are also a very talented person. Have you ever received an invitation letter from a foreign university before?"

Lin Sen said with an embarrassed smile, "I did, from the University of Zurich and from Stanford University, but my grandfather asked me to go abroad to do academic work after finishing my graduate studies in China."

"I see." Zhuang Weiran nodded, "No wonder Director Zhou has been taking you with him, are you a student of Director Zhou?"

"No." Lin Sen shook his head, "Director Zhou mainly takes care of doctoral students. I am a small graduate student, how can I bother Director Zhou."

"Give me your email address later, when will you graduate from graduate school?"

"It's this year..." Lin Sen couldn't believe it. Could it be that Professor Zhuang really wanted to invite him to study for a Ph.D. at Princeton University?

Arriving at the Zhenxing Hotel, Zhuang Weiran got off the car and said to Lin Sen, "Just send me your email later."

"I'll take you in." Lin Sen hurriedly got out of the car, Zhuang Weiran shook his head and said, "No, you can go back first. Now, it's time to eat."

"Hey." Lin Sen was still a little uneasy, and after getting out of the car, he stared at Zhuang Weiran.

Entering the Zhenxing Hotel, Zhuang Weiran went straight to the elevator, he had to go back to the room immediately and start researching.

"Professor Zhuang." Suddenly someone called his name, Zhuang Weiran turned around and saw Mr. He from the Zhenxing Group and Director He who he saw last night walking towards him.