Life in the collapsed world from scratch

All incoming matter and information in the black hole will inevitably fall towards the singularity, and the existence of the singularity represents the failure of all physical laws, that is to say, the time travel method derived by relying on the existing physical rules will not be able to stop. re-established.

Therefore, it is necessary to find a way to prevent the required materials and information from directly falling into the central singularity.

How to do it?

It's very simple, just let the black hole rotate.

Thinking in this way, Cheng Xi manipulated the "Star of Eden" again, and combined with the magnetic field created by his third Herrscher power, tried to make the originally static pseudo-black hole rotate and turn it into a simulated black hole. "Kerr black hole".

However, at this time, he has overlooked a very important thing...

Chapter 370 The Girl's Decision

Different from the simplest Schwarzschild black hole, the rotating Kerr black hole has two horizons, inner and outer, because of its own characteristics, and outside the outer horizon, there is a still limit called "infinite redshift plane".

In other words, when the Kerr black hole is rotating, it is not only itself rotating, but it will drag the surrounding space-time to rotate together.

The so-called static boundary, as the name implies, is above this boundary, and the "rotation speed" of space-time is equal to the speed of light. Spin together.

What's more unfortunate is that both the outer event horizon of the Kerr black hole and the range of the static boundary are larger than those of the Schwarzschild black hole of the same mass.

and so……

"Is this the reason why you almost twisted the whole building into a twist?" Tesla folded his arms around his chest, looked at Cheng Xi and asked, with obvious questioning and annoyance in his words.

"You may not know that there is a mecha recently researched by Dr. Tesla in that laboratory building." Einstein reminded softly.

Cheng Xi suddenly realized, no wonder she was so angry.

"Then... I'll pay?" He thought for a while and asked tentatively.

"What do you pay for?" Tesla rolled his eyes at him, and was a little angry at first, but seeing his cautious look, for some reason, the anger in his heart suddenly disappeared.

"Forget it, anyway, it's not too badly damaged. It can still be used after a little repair, but some parts need to be re-made." She turned her head and waved her hand.

"But having said that... you really dare to do it, let the pseudo black hole spin up, are you not afraid of falling into the outer horizon and being swallowed?"

"When you do an experiment, you have to be full of exploration and adventure to achieve unexpected success, right?" Cheng Xi defended herself.

"As for the danger...it's actually not as scary as you imagined. Even if it really fell into the outer horizon, as long as the simulation of the Mimic Star of Eden is interrupted in time, there won't be a big problem."

After all, the outer horizon is only the interface that determines whether matter can communicate with the outside world, and there are no strange properties in the inner horizon, so as long as you can guarantee that you will not be torn apart by gravity, even if you enter the outer interface for a period of time, you will not be able to There is too much danger.

"Although there were some twists and turns in the middle, the result was successful. At least it verified the feasibility of using the Star of Eden to simulate the Kerr black hole." Cheng Xi spread his hands and continued: "Look, if President Walter knew If you can still do this, how can you fail to succeed against the Second Herrscher twice?"

"If he succeeds, you won't be able to see me." The girl's dissatisfied voice came from her heart.

...Although this is the truth, I am not talking about the facts.Cheng Xi thought in his heart.

But the girl obviously didn't want to hear his explanation, and after a soft snort, there was no sound.

……Angry?

"No……"

The girl's muffled voice came, sounding a little unhappy.

Are you still angry?

Cheng Xi thought to himself, thinking about coaxing him later.

However, what he didn't know was that the girl's unhappiness was not because of the incident just now, but more because of herself.

".々I... am I a little too self-willed?"

Looking at the outside world, Cheng Xi was talking and laughing with Tesla and Einstein, she thought a little confused in her heart.

He keeps saying that he is Xiaoxi's older sister, but in fact he has not fulfilled the obligations that a older sister should have at all. Even the responsibility that should be borne by himself, because of inner timidity and dare not face it, he chose to be a selfish person. Hiding in a hurry, I left everything to Xiaoxi (with good money) to bear and face.

Such a self...is she really a competent sister?

No one answered Sirin's question, but she had already figured out the answer in her heart.

"Sorry, Xiaoxi..."

Deep in her heart, the girl's consciousness murmured softly: "It must be hard work to take care of such a self-willed me..."

So...it can't go on like this.

Xiaoxi can't always let Xiaoxi bear everything. As an older sister, she has to make some changes.

With this in mind, Sirin silently made a decision in her heart.

Chapter 370 I Can Do Everything...Except Solving Math Problems

On the other hand, after learning about Cheng Xi's thoughts on time, Tesla and Einstein respectively gave two completely different answers: "Are you kidding me?" evaluate.

Obviously, unlike the relatively rational Einstein, Tesla was completely opposed to this kind of thing.

"What's more, even if you take [-] steps back, assuming that this kind of thing is really possible, how do you go through time? Do you go directly into the black hole with your body? Don't be kidding."

Indeed, although the problem of time dilation is easy to solve in the face of the power of the Herrscher of Space beyond the speed of light, the other problem is not so easy.

According to the black hole hairless theorem, any object that enters the black hole will disappear as a material, and all complex properties including shape and composition will disappear, leaving only three physical quantities of mass, angular momentum and charge.

That is to say, matter can indeed enter a black hole, but after entering it cannot be said to be the original one... at least it is definitely not the same in appearance.

Even if the event horizon of a quasi-black hole is not as domineering as a natural black hole, some effects are the same, and the singularity that destroys all physical rules is real.

"So... How did Christina and the others solve this problem and create a time machine?" Cheng Xi's thoughts began to diverge involuntarily.

...Forget it, the rules between different worldviews cannot be completely shared, maybe it is a unique setting under that worldview?

Cheng Xi shook his head and put his thoughts back.

As far as the current theory is concerned, there is indeed a feasible method, which is to inject a certain amount of electrons into the "Kerr black hole" to turn it into a charged and rotating "Kerr-Newman black hole".

And this kind of black hole has a characteristic: when the charge it carries is much greater than its mass, the singularity inside it will be exposed.

In this way, if the influence of the event horizon is eliminated, and the ring-shaped singularity inside the quasi-black hole is exposed, then the strange ring can be passed through "safely".

But... There is another problem here, regardless of the danger of matter passing through the strange ring, the harm of "exposing the singularity" has already been introduced earlier.

If the theory of relativity is wrong, the singularity is not a real point with infinitely small volume and infinite curvature of space-time, but at most it will trigger a big bang because of the so-called "quantum repulsion".

But once the theory of relativity is correct, then a singularity that breaks the rules of physics and subverts causality loses the protection of the event horizon and is completely exposed to the real world. Strikes against the foil are countless times more terrifying. Judging from the catastrophic effect it causes, I am afraid that it will only pull the entire universe into a lower energy level, thereby destroying all matter. The vacuum decay that rewrites the laws of physics can barely be compared to it. .

No one can afford such disastrous consequences, and it is impossible for Cheng Xi to gamble the 50.00% possibility of the entire universe, or even the life that may involve the entire multiverse.

"...Let's leave it at that for now."

Other than that, Cheng Xi, who couldn't think of any feasible way, let out a long sigh of relief, and whispered to himself.

Without the support of anti-entropy, he can only collect data to find a solution when he encounters a problem.

After thinking about it for a while, although he was in good health, he felt somewhat exhausted mentally.

Let's put this experiment on hold until we find something that works.

While thinking, Cheng Xi got up and sat on the sofa next to her, wanting to lie down and have a good rest.

However, the next moment, the soft touch from the back of his head made him slightly stunned.

"Are you tired?"

Sirin, who did not know when her body appeared, was sitting on the sofa, gently stroking Cheng Xi's head, and combing the somewhat messy hair on his forehead.

There was a trace of inexplicable complex emotions in the girl's golden eyes, and she said softly and softly:

"Then let's take a break and leave other things to my sister..."

"……Is it really possible?"

After thinking for a while, Cheng Xi asked curiously, "Then... can you solve differential equations with separable variables?"

Celine: "..."

The "other things" I mean are not this.

Chapter 370 Are you interested too?

"Cheng Xi~I'm back~!"

Just when the atmosphere in the room fell into silence, the door of the room was knocked open with a "bang", and a small figure flew over and got into the arms of "Cheng Xi".

"This repair took so long...do you miss me?"

Xiao Cangxuan rubbed his face twice, then froze for a moment, feeling that there was something wrong with the touch.

She raised her head in doubt, but what she saw was not the boy's familiar black eyes, but another girl who looked familiar.

"Ah!" Xiao Cangxuan exclaimed in surprise: "Cheng Xi, you have become a girl!?"

Cheng Xi: "?"

You would rather change my gender than admit that you have identified the wrong person, right?

With a dark face, he pulled Xiao Cangxuan out of Xilin's arms.

Xiao Cangxuan wanted to struggle at first, but when he saw that the person holding his neck was Cheng Xi, he immediately calmed down, but there was still a little confusion in his two big black eyes.

If Cheng Xi is the one here, then...

"Are you...?" She tilted her head, looked at Sirin and asked.

Sirin: ...

You obviously knew me before!

"Did this regular maintenance break your memory module?" Cheng Xi patted her head lightly and complained.

"It hurts, Cheng Xi!" Xiao Cangxuan covered his head and said with an aggrieved expression.

However, after Jing Chengxi reminded her, she quickly remembered who this girl was.

...In fact, I don't blame her. Who made Xilin like to hide and not come out to meet people?I have so many things to do every day, even if I accidentally forget, is it normal?

It's not like there is a saying...the nobleman often forgets things...right?

Xiao Cangxuan thought about it carefully, and the cost of his own seems to be quite expensive. If you count the time crystal in his body, it is not an exaggeration to say that it is a priceless treasure.With such a precious self, it is reasonable to forget some small things, right?

She justified herself in her heart.