Virtual process.

It is impossible to understand the process without using mathematical tools. The eye cannot catch, and common sense is not up to the task of understanding. Because the process itself is only a concept that is easy to understand. From the very beginning, it was outside of common sense. It is an anti-common sense concept that can only be understood by using mathematics and reason.

If this explanation is obviously not possible, it is undoubtedly equivalent to no explanation at all.

However, Mitsuki Umihara did not continue. It was as if he had taken over the conversation, but it turned out that he himself was choked by the concept. Such a concept is really difficult to explain clearly.

Anyway, before he took over the conversation, he didn't think about it at all, right? Probably......

Dome was stunned, and suddenly understood. I'm afraid, he just wants to free himself?

But my brother is not very good at describing physical concepts vividly. And obviously, if the essence of this ability is not explained clearly, I am afraid that Huang Quanchuan will not give up.

Taking a deep breath, Dono's mind raced. When she was thinking, it was as if she was the only one in the whole world, and it was incredibly quiet.

Even the wreckage of unmanned helicopter gunships, which once exuded a sense of oppression that could dominate even the sky, is now a useless mass of scrap metal, or the guards who are busy treating the wounded, seem to be non-existent at this time.

It's a wonderful process, as if she doesn't live in the world, but as if the world has stopped for her. When her thinking ended, the world returned to normal.

Relative to others, this is just a near-non-existent process.

"Misaka-san."

Dome looked at Mikoto.

She chose this as a starting point. Because there is no doubt that this is also the field that Mai Tamin will step into one day. It is also the only miraculous theory that can compete with the general theory of relativity, which is good at it.

"As an electric-related person, have you ever imagined the trajectory of an electron?"

She didn't really want Mai Trin to answer, but just used that as a starting point for an explanation. Her white fingers swiped horizontally, then vertically upwards, outlining a Cartesian coordinate system.

"The horizontal axis is space, while the vertical axis is time. This is the concept of a 'space-time map'. ”

Then, her fingers took a random point in the coordinate system, first to the upper right, then to the upper left, and finally to the upper right again, outlining a zigzag trajectory.

Everyone can understand this easy-to-understand diagram. It's a trajectory that changes position over time. We live in this world, and all actions can be represented in such a way.

"What's the big deal?"

Mai Korin asked, puzzled, she didn't understand why Dome was talking about something so simple.

"It's not a big deal." Dome shook his head very, very slowly, "But Misaka-san, have you ever seen anything like this?" If you come into contact with QED in the future, you will definitely see this kind of space-time map often. ”

The delicate index finger returned to the beginning of the trajectory again, this time sliding up to the right, then down to the right, and finally up to the right again.

"This is the 'virtual process.'"

With the swipe of her fingers, suddenly everyone fell silent.

"This ...... What the hell is going on...... Do you know what you're talking about? ”

Mikoto was dumbfounded, and she even wondered if something was wrong with Dome.

If anyone doesn't understand, recall the meaning of this coordinate system – the horizontal axis is space, and the vertical axis is time.

The reverse movement towards the horizontal axis represents a change in position, which is easy to understand. So what does it mean to move in the opposite direction of the longitudinal axis?

"Is that so? Is that actually the case?! ”

Shirai let out a mournful moan, her eyes full of panic.

This panic is not for anyone. For Shirai, who has always been accustomed to calculating time and space, this feeling is like sucking solid ground from under his feet.

With the simple and easy-to-understand diagrams, everyone understands it. At the same time, this simple diagram also brings endless fear to the crowd.

The so-called "virtual process" is the process by which an object moves in the "opposite direction of time".

Is this possible? No, wait. Until then, has there been something overlooked?

There is an obvious fact that no one will notice, and that is that this behavior does not violate any of the laws of physics. Originally, there is no physical law that stipulates that a process can only move in the positive direction of time.

"Does that really exist?"

Even Mai Tamin couldn't have imagined that such a thing could exist in the world.

"It doesn't exist." Dome immediately denied, saying, "At least as far as human knows, there is nothing that actually moves in the opposite direction of time. It's just a mathematical technique, not something that actually exists. ”

Is that so?

Huang Quanchuan pointed to the scene, which had already become a result, chaos.

"But isn't that what this is? That's what the young lady is doing here, right? ”

"No, that's impossible. In practice, it is simply a matter of understanding the energy of the electron as negative and allowing the negative energy of the electron to move in the opposite direction of time. ”

"So what's going on?"

"I don't know."

"Don't know?"

Huang Quanchuan was surprised. It's hard to imagine that she said so much, only to end up with a "I don't know".

"Yes, I don't know. Not only do I not know, but no one can know. We don't have the right to delve into what happens in this process, just as we don't have the right to think about how individual electrons behave in a double-slit diffraction experiment. "Dome speaks of a concept that must be learned in a school city.。 We can only get the result, and we have no right to interfere in the intermediate process. If you want to say what this process looks like, then this process is all possible random processes, it is a complex number that all can happen. It is a summation of history and encompasses all possibilities. ”

“…… Ha? ”

Mai Tamin raised her eyebrows glared at her, which sounded like sheer nonsense.

What the dome means is that everything that is possible happens, and there is no right to inquire into what has been done. The only thing that can be seen is the result of doing this. Who would believe this conclusion?

But no one thought she was talking casually, not only because of what they knew about her, but also because she mentioned a noun.

Historical summation.

From the mouth of the mysterious girl, I have also heard this term.

"How can this kind of nonsense and ability be dealt with! What kind of joke is this! ”

Bai Jing shouted like a bang.

If you don't even know what a person does, who cares what she does?

It's unreasonable, and the only words that can come to mind are "invincible". How could such an capable person exist in this world?

"I'm really sorry, but if you want me to ......," Mitsuki Kaihara snorted softly, "isn't there something wrong with thinking about any nonsense until now?" Isn't that something that should only come to mind right now? ”

“…… What exactly are you trying to say? ”

Shirai glared back.

"Don't you know that the 'superpowers' themselves are all implemented under the same theory?"

“……”

Speechless.

It is impossible to answer such an obvious rhetorical question.

That is the essence of superpowers, the miracle accomplished through the theory of quantum mechanics. As the basis of all capable beings, quantum field theory is the only and unquestionable law of nature.

From birth, Shirai has never doubted him. It was a long time and a lot of successes – or rather, no theory of failure.

She practices using her abilities and hopes every day to surpass herself yesterday. This is the longing that every student in the school city has.

However, for the first time, I felt the extreme abnormality.

"I don't want to worry about that. What I want to know is, is it impossible to stop that kid from acting arbitrarily like this? ”

Huang Quanchuan grabbed his hair hard. Although the security guard in charge of the rescue just now said that she had not suffered too serious injuries and made her feel better, there was no doubt that she would never allow this to happen again.

"She didn't make it herself, absolutely not."

Mitsuki Kaihara shook his head and muttered to himself.

Only he could "see" the torrent of information that was like an angry wave when the Lost Maiden finally introduced the void process. But he had no way to explain this.

Huang Quanchuan suddenly glanced at him, and then turned his gaze as if nothing had happened.

"About this ......," said Dome Nai, who had paused for a moment because of her brother's interjection, "No, there is absolutely no way for her to act arbitrarily. ”

"Why?"

"The calculation of path integrals, after summing history, leaves only paths that are allowed by quantum mechanics. Although there is no right to interfere with the process, in any case, it must be possible to achieve this result. It should be only when such conditions are met that she can use her abilities like this. ”

"What do you mean?"

"Just like a loan, you can only take out a loan if you can afford to borrow it." The 'virtual process' is this process of 'borrowing'. You can only borrow it if you can afford it. ”

The expression on her face when she replied was as soft and graceful as she always was, and it even made people feel a little weak. But no one would find any uncertainty in her words.

Without a hint of hesitation and doubt, because this is not a guess, but a conclusion.

Huang Quanchuan immediately understood.

That is, that last ability can only be used for what she could have done. Is it understood that the ability can only be activated if the result is this? ”

This must be the reason why that girl didn't use this ability in the process of fighting Mitsuki Kaihara, right? What can't be done is still not done.

Gufa thought so.

"Spare me, if I want to understand something like this, it's not even a joke."

The black wife muttered in private.

It was true that no one paid attention to what he said at this time, but Gufa heard his words.

====================================

Actually, I don't really understand this concept myself. Although I learned a little from the flask, I have made some minor changes to the settings for the sake of these.

In short, it is only concerned with the beginning and the end, and the process is irrelevant. But what can't be done is still can't be done.

Energy borrowing is allowed as long as it can be returned within the specified time. In fact, including Xingchuan's quantum tunneling, the principle is the same.