��Gravitation_&_Weak_Interaction）

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Basically,The time is around 3:30 p.m.,That's before most schools in the school park city end school.。 As for the location, it's in a fast-food restaurant in the Seventh School District.

At a table near a glass wall, a tall woman sits.

Dressed in a pink thin long-sleeved top and a summer dress of the same color, she rests her chin lightly on the back of her hand, and sits like a mature woman with a successful career, and anyone will admit that she is a very attractive girl.

In fact, she is not as mature as she looks, and in terms of age, she is almost a high school student.

She looked bored, as if she was waiting for someone.

Beside her sat a young girl. A white shirt with a black blouse, a short dark rose red skirt, blonde hair and blue eyes, seems to be an international student in the school city; Opposite sat another girl, wearing a white T-shirt on the top half and denim shorts on the bottom half. The girl was planted on the table, and she looked like she had no strength.

At first glance, it may seem like it's just a small group of high school students. But in fact,They're one of the secrets hidden in the depths of the school city.。

Codename "Item",A private unit in the school city.。

Yes, this is an elite force of four people.

This description is not an exaggeration. In fact, just the mature girl at the head of them was enough to compete with a real army.

LV.5's NO.4, "Atomic Collapse" Maino Shenli.

Demolition Specialist, Flanda Saiwen.

Tracker, LV.4's "Ability Trace", after Takiju.

It is no exaggeration to say that this composition of personnel is enough to make ordinary troops fearful. What's more, they also have a member who hasn't shown up.

In fact, the three of them are now waiting for the last person.

The member was the youngest of them, but the strongest of them all.

"Really! How long does this guy want us to wait? ”

Mai Ye complained.

I'm probably used to it. Neither Takiju nor Flanda reacted and went about their own business.

Anyway, although there are complaints, but still waiting for what is this called?

At this time, Takiju, who was lying on the table, raised his head slightly.

"Here ......

With her weak voice, a girl did walk in.

He was about 12 years old and didn't know why he was wearing only a blue-gray vest.

This girl is the favorite of the silk banner, that is, the last member of this army.

"Finally back? How was Golden Week? ”

Mai Ye asked seemingly casually.

"Super boring. Not only is the experiment super boring, but I also met a super boring guy. ”

"Really?" Mai Ye nodded slightly. "A news that I just got in. The institute you went to was completely wiped out last night. ”

"How is that possible?"

A hint of surprise appeared on Juanqi's favorite face.

"Although they are all gone, there is no trace of an external attack."

"In other words, the super bastards guys were killed by the monsters they made themselves, right?"

The silk flag nodded, which surprised Mai Ye a little.

"Didn't you do that?"

"I didn't get this hyper-violent ability, I got a defensive boost. So this kind of thing that requires super attack power to do is super unreasonable to me. ”

"So, someone else?"

"I think the only one I know who is capable of doing this is that super boring guy."

"Okay, okay, don't talk about these things. We're here today to celebrate the return of the Silk Flag, right? ”

The blonde Flanda said with gusto.

"Why don't I remember saying anything like that?"

"It doesn't matter if you said it or not, right? Isn't this a touching reunion of companions? ”

That being said, I can quite understand the style of these people. That is, it's all a mess of guys.

"Welcome back...... Silk Banner ......"

It seemed that it took a lot of effort to sit up right again, and leaned back on the sofa, and said weakly.

"Hmm, thank you."

When she said this, the hearty girl Juanqi's favorite was a little embarrassing.

"Then as a celebration, let's have a big meal today!"

Flanda exclaimed.

"It's just a nutritious fast food anyway."

Mai Ye muttered as if unhappy.

However, the noisy Flanda soon had to be quiet.

As it happened, three guests pushed the door in and sat down at their table.

Two of the three were women, and one of them was in his early twenties and dressed stylishly. As for the other ......

("Hey, Silk Banner, look at that ...... over there")

("Wow!") It's so beautiful!" ）

("That's right, right?") It's more beautiful than Maiye!" ）

Before the two of them could whisper, a slender arm beside them pressed the back of the mouthy Flanda's head and slammed her head on the table.

In the blink of an eye, it felt like Flanda had played a cosplay show after Takiki. In short, he fell headlong on the table and didn't move.

In order to prevent the fire at the city gate from harming the pond fish, Juanqi quickly grabbed the straw and sealed his mouth with a drink, and shrank his whole body into the sofa, as if he could make himself smaller by doing so.

The position where Flanda and the girl with the silk flag commented were sitting diagonally opposite Mai Ye. In this position, both sides can see the opposite side.

Because of the sound of Flanda's head hitting the table, the girl looked here. Mai Ye showed some unpleasant expressions, and the girl looked away apologetically.

However, Mai Ye didn't look away.

The girl was indeed quite pretty, and although the talkative Flanda had suffered, her words were true. Even Maiye, who imposed "sanctions" on her, had to admit it.

However, Mai Ye had a feeling that something was not quite right.

It's good to say that it's a woman's intuition or something, there's no justification for it, but it's just not quite right.

"Is that the uniform of Tokiwadai Junior High School? Tokiwadai hasn't finished school right now, right? ”

"'Work', I guess?"

"Work?"

"Do you think this group of people is super like a photography group that goes out to take photos? The super sad man who was carrying a large bag of photographic equipment and a tripod was obviously the photographer's follower. The older woman must have been the photographer herself. As for the most beautiful one in the end, don't you think she looks like a model? ”

"So, it's a break between filming on location?"

"It should be. If you look at the truck outside, isn't it super like the kind of modified car that is often seen in movies and converted into a mobile photography studio? ”

The resurrected Flanda and Silk Banner whispered to him, and Mai Ye didn't care at all.

That feeling is getting more and more obvious, and there is even an illusion that everyone's sense of existence is beginning to fade except for this girl.

Suddenly, a bright light flashed in the eyes of Takikori, who had been weakly huddled in the sofa.

"There is a signal to ......"

She said meaninglessly.

"What kind of signal? Where is it? ”

Mai Ye still looked at the girl and asked without looking back.

"Can't confirm...... Can't go back...... Can't be inverted...... Signal asymmetry......"

The powerless girl Takiju is almost gibberish.

"Is it asymmetrical?"

Mai Ye nodded slightly. Through the words of the takiju, she has some conjectures about this abnormal feeling.

I'm afraid that the sense of abnormality is caused by this sense of asymmetry.

Takiju's ability to record the characteristics of the opponent's AIM diffusion field and use it as a basis for tracking. A considerable part of this is based on reverse deduction.

Fields are particles distributed in space-time in the form of probability waves, which is not complicated. By inverting from the current situation, we can get the opposite information, which is a symmetrical inversion. From this inversion, many useful things can be deduced.

But sometimes, it's wrong.

Mai Ye herself is like this, her ability does not conform to this principle of symmetry, that is, her ability cannot be reversed.

Originally, she thought she was a special case, but now it seems that the same is true of the Tokiwadai girl.

Could it be that he is the same person as himself? A rather unpleasant feeling arose.

But Takiju shook his head after taking care of it.

"No...... Unlike Mai Ye, you can't do the opposite, she can't define ......"

"Oh? What's the difference? ”

"It should ...... It's the difference between being weird and being weird......"

Taki's body shook suddenly, and then he fell weakly into the arms of the silk flag beside him.

"Chaos...... It's messed up...... Messed up ......"

"Taki, Taki? What's messed up? Aren't you now free to use your abilities? ”

At the same time, it was as if something had happened suddenly at the other table.

The Tokiwadai girl, who looked like a model, answered a phone call and immediately got up in a hurry.

"I'm sorry, Ms. Tateki. Something very serious happened at school and I had to go back immediately. I'm so sorry!"

The girl bowed deeply and apologized to the woman very uneasily.

"It doesn't matter. If you have something urgent, go back quickly, don't worry about us, we will find another way. ”

"So, I'll take my leave!"

The girl quickly left her seat and opened the door. Her hurried movements caught everyone's attention. Under everyone's gaze, the girl broke free from the shackles of gravity at the main entrance of the fast food restaurant and flew up.

"Hey! It's ...... Flyable? ”

Flanda exclaimed.

"It's not the wind, I don't see any signs of gas movement that is too intense, and that breeze can't do that."

As an ability to control the atmosphere, the Silk Banner is very sensitive to the movement of gases. Her judgment can be said to be very authoritative.

If gas dynamics are excluded, the only thing that can lift an object into the air is to change gravity. But gravity should not be able to make a person fly freely. So......

"Gravitational ability, that's interesting."

Among the four, Mai Ye Shen Li, who has the highest rank and the best mind, naturally got the correct answer first.

However, there is another anomaly that remains unanswered.

"Takiju, what do you mean by messing up?"

"No...... I don't know...... The coherence over there has not faded......"

Over there? Isn't it here?

"Where do you mean over there?"

Takiju reported a direction, and suddenly the other three girls looked at each other.

"Hey, that place isn't ......"

Flanda looked at the rest.

"The Garden of the School House, a private Tokiwadai Junior High School."

With an extremely playful smile, Mai Ye Shenli said the answer.

"Do you want to check it out?"

"What else do you need to say?"

Mai Ye stood up gracefully, and Flanda beside her also looked excited.

Maybe for these girls, the scene that makes others panic is like a game.

As a private unit, it's a thrilling game.

"I'm not going."

Surprisingly, Juanqi's favorite actually refused.

"Huh?"

Mai Ye's eyebrows were raised.

"There's a job for me personally, it's super troublesome."

Silk flipped the phone over.

On the large display of the mobile phone, a line of cipher text that has just been sent is displayed.

That's something that only they understand, the text of the high-level instructions.

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Uploader's Note:

At the heart of this chapter is the breakdown of symmetry. This is a question that transcends physics.

Symmetry, this concept is very easy to understand. If we say that a thing is symmetrical in time, it means that an object takes a certain amount of time to get from A to B, then inverting the time under the same condition can also get the result of going from B to A in the same time; If we say that something is mirror-mirrored, then that thing must appear in the mirror to be completely opposite. Etcetera.

Incredibly, however, this symmetry is not always true in physics.

For example, in terms of symmetry, weak interaction forces are very special. The weak interaction force does not obey the mirror inversion symmetry (cosmic symmetry), does not obey the charge conjugate symmetry, does not obey the charge conjugate and cosmic symmetry at the same time, and does not obey the time inversion symmetry. At the same time, quantum numbers such as isospins, singular numbers, canopy numbers, and base numbers are not conserved under weak interactions (which will cause changes in the "taste" of quarks).

Gravity appears to obey symmetry on the surface, but there are many things that are not clear about gravity. In current theories, it is difficult to define the symmetry of gravity, although in general relativity, gravity is the result of space-time symmetry.

Just give one of the easiest examples to understand. It is well known that in the four most basic forces, among which the strong interacting force, the weak interacting force and the electromagnetic force are symmetrical, attraction and repulsion are symmetrical. But this symmetry does not exist in gravity, which only attracts and does not repuls. It is clear that in this part, gravity is inherently asymmetrical.

Don't think that this is not important, because gravity is symmetrically broken in this respect, so although it is the weakest of the four interacting forces, it can continue to superimpose without attracting and repelling each other like the other three forces. This makes the role of gravity decisive at the macro level – the fundamental reason why we are able to stand safely on Earth.

It was once thought that there were three symmetries in the laws of physics, namely electric charge (C), universal symmetry (P), and time (T). However, in 1956, Yang Chen-ning and Lee Tsung-dao proposed that the universe is not conserved under weak interaction forces, and for the first time gave the strange concept of asymmetry to the physics community. Later, it was discovered that the symmetry of the charge was also incomplete. What's more, the simultaneous symmetry of charge conjugation and cosmic symmetry (equivalent to time inversion) is likewise broken. Since the CPT joint symmetry is proved, and the simultaneous symmetry of charge conjugation and cosmic symmetry does not hold, then the natural inference is that the time reversal symmetry (T) is also not true!

In this way, the symmetry that we know to be so taken for granted has been divided into east, west, north and south by reality.

The existing clues seem to suggest that quantum gravitational theories (such as string theory) may well not even adhere to Lorentz invariance, which leads us to ponder the philosophical question of whether nature is born to reject the symmetry of details.

Don't be uncomfortable with this confusion. For, in fact, the best minds on earth are just as uncomfortable with it. Pauli once said about the theory of non-conservation of universal symmetry: "I can't believe that God is a left-hander."

Unfortunately, it now seems that the old man is not only left-handed, but also a left-handed man who habitually has convulsions. (Anyway, Dome is also left-handed...... ）