Although the current Xu Yang Research Institute is quite small, although it is small, it is well-equipped with all kinds of equipment. In fact, the area is quite large. Compared with the Academy of Sciences, it is not worth mentioning. Fortunately, in terms of equipment

surpasses others in aspects.

With a strong and powerful team like Xiaoman, I can handle any equipment. If there is anything that cannot be solved without money, if there is... Xu Mang threatens to sell it and he may suffer retaliation.

The research on superfluid helium is not a particularly complex one. Xu Mang only got inspiration from a paper and obtained some results through theoretical calculations. Of course, experiments are still needed to prove it.

really,

Xu Mang's initial calculation results were problematic. He initially thought that when the temperature was lowered, the semi-quantum vortex would disappear. However, according to experiments, it was found that when superfluid helium is cooled to a certain temperature, the semi-quantum vortex still exists, and at this time, the semi-quantum vortex appears.

a non-topological wall.

While physical walls don't impede flow, nontopological walls change helium's magnetism, much as Xu Mang envisioned, much like what happens to a superfluid within a nanostructured volume as it cools.

Xu Mang was surprised that he also discovered the second speed of sound in the Bose-Einstein condensate. This is a quantum phenomenon. In addition to the normal sound of liquids, there is a second speed in superfluid helium.

a sound phenomenon.

This phenomenon stems from the quantum nature of the liquid, where the first sound is heard first, and then when it appears as a second sound, there is a second chance to hear it, albeit a weak one.

Between one and two Kelvin, which is 25 meters per second and 250 meters per second respectively, although the traditional second sound theory has been successfully applied to superfluid helium, the Bose-Einstein condensate

The emergence has brought new challenges.

Xu Mang therefore proposed a brand new theory to capture the second sound in these quantum liquids. This was entirely due to Xu Mang's discovery that in superfluid helium, the second sound is faster, and thus proposed the Feynman path integral.

Extended superfluid theory.

Feynman's path integral theory expresses quantum mechanics as a summation of trajectories, and Xu Mang modified these trajectories. In the old path integrals, they contain the information of quantum fluctuations, the extension from a to b, which is a

Visualize the trajectory entering the path integral, while the cross-section is more or less circular with constant diameter along the length.

But in the new path integral, the shape of the cross section can be changed, it can be the shape of an ellipse. Xu Mang calls these quantum mechanical states compressed states, so it can be applied to any method based on path integrals.

"well..."

"I don't know if it can be adopted." Xu Mang sighed. He wanted to use this method to solve many phenomena at the interface between quantum physics and classical physics. Although there are not many solved examples, this new framework was used

Finally, many problems will be able to gain insights from their essence.

In short,

Xu Mang used superfluid helium to introduce two ideas, the new quantum structure in superfluid helium, and the new superfluid theory.

But Xu Mang is now very worried that these super powerful theories may not be accepted by the world. After all, they are too far ahead of their time, especially the new superfluid theory, which will definitely be criticized by many people. Of course, these people should

It's from Europe and America.

For example, BBN, or a low-quality newspaper like the "New York Times". To Xu Mang, whether it is BB or the "New York Times", or some other mess, they are all a group of lunatics who like to smear people.

I can't understand the thinking of these people. Maybe for them, the main reason is that China or themselves have a little trouble, so they are going against them. But if you think about it carefully... this is a common practice in Europe and the United States, using contradictions to solve conflicts.

Leaving the laboratory,

Xu Mang returned to his office, with his legs crossed and a carefree look. There was no trace of the majesty of an academician, only a faint smell of salted fish, and a hint of decadence.

Bang bang bang,

There was a knock on the door,

Then Wang Ai came to the door with a stack of documents. Xu Mang had to say that he took great care of his former mentor's daughter, and Wang Ai lived up to Xu Mang's expectations. During the time he worked here,

It has grown a lot and published many heavyweight research reports.

pity...

She doesn't even come to visit her during the New Year. Logically speaking, he plays the role of her leader, brother, and teacher.

"Academician Xu."

"This is the most mysterious gravitational wave we have detected recently." Wang Ai submitted a document, and then submitted a second document, and said seriously: "This is the violent gravitational wave we simulated through simulation diagrams.

Just before the explosion, the star was stretched by tidal forces."

Xu Mang checked it carefully, raised his head and asked, "You want to say that this is the merger of two primordial black holes, right? The concept of primordial black holes has been proposed before in the study of the expansion of super-large black holes. Why did it come up again this time?

"

"No no no!"

"We attributed this merger to the collision of neutron stars." Wang Ai said: "Actually... Academician Xu, the purpose of my coming here this time... is to ask you to help me transfer to other departments."

"ah?"

"Transferred to another department?" Xu Mang was stunned for a moment and asked curiously: "What? The relationship with other people in the team has broken down?"

"no."

"I want to challenge physics research in other fields." Wang Ai said with a wry smile: "Astrophysics is not my strong point."

"..."

"Does Sun Chuanxiao know?" Xu Mang asked.

Wang Ai nodded and said seriously: "Brother Sun knows that he asked me to discuss it with you. If you agree, I will let you go. If you don't agree... I can only stay in the gravitational wave detection laboratory."

Xu Mang: Embarrassed

This is completely forcing the uterus!

Forget it, forget it...

"Um!"

"You are also a veteran. Although your qualifications are a bit weak, your research capabilities and achievements are difficult to match. When the time comes, you will work hard and lead some newcomers." Xu Mang said: "There should be no problem, right?

"

"good!"

"I will definitely complete the mission." Wang Ai said with a smile: "I want to engage in research in condensed matter physics."

Xu Mang nodded and knew why Wang Ai chose condensed matter physics, because it was easy to get results in this area, unlike theoretical physics.

After Wang Ai left,

Xu Mang made a phone call to his former class teacher, Professor Wang, and told him about his daughter's recent situation. In addition to a few words of thanks, he also discussed the research findings in physics and the future Xu Yang Institute's treatment of new intern students.

requirements.

Due to the change in nature, the requirements have increased a lot. In the past, just a graduate student was enough, but now graduate students are no longer possible. What Xu Mang requires is to have independent research capabilities. Although it will still be a team model, the members still need corresponding research.

ability.

"this..."

"I'm studying for a Ph.D.," Xu Mang said, "And it's so bad that I don't have..."

"There are only a few Ph.D.s in our physics department every year, and those who can study for Ph.D.s are all first-class." Professor Wang smiled bitterly: "Xu Mang... I can't find anyone who is more awesome."

"There's nothing we can do about it..."

"The requirements are like this, forget it... After all, I am their senior brother." Xu Mang said with a smile: "You can just study for a doctorate, but you must pass the corresponding political review... This is the requirement above.

of."

"good!"

"I'll discuss it with Director Fang."

hang up the phone,

Xu Mang stretched out, glanced at the pile of documents on his desk, and remembered that he had not written a research report yet.

"Let's talk tomorrow."

"Go home and hug your wife!"

After packing his handbag, Xu Mang took a pile of documents and planned to go home and head to Xiaoman's gentle hometown.

"Dingling bell~"

Sudden,

The landline phone on the desk rang.

"Hello?"

"Who is it?" Xu Mang's tone was not very good. After all, it affected the time he could go home to hug his wife.

"..."

"Academician Xu... I am Gu Chong, the leader of the Quantum Materials and Physics Research Group at the Institute of Physics." After hearing Xu Mang's tone, Professor Gu thought he had disturbed him, and said helplessly: "I'm really sorry...

.Academician Xu, did I disturb you?"

"ah?"

"Oh...no, no." Xu Mang asked curiously, "What's the matter?"

"Ahem..."

"Academician Xu... we want you to help us solve a problem." Professor Gu smiled bitterly: "This problem can only be solved by you. It is about the magnetic drive electric response. Our theoretical research shows that made of cerium, aluminum,
To be continued...