"I am indeed you, but we belong to different planes, and we are not technically the same entity. Pen ~ Fun ~ Pavilion www.biquge.info" the warm voice explained.

"It's a different plane, and that sounds incredible. I thought you might just be my subconscious. Yuan Haochen shook his head in disbelief.

"It's really hard to understand, but everything happens for a reason."

"Can you be more detailed?" Yuan Haochen frowned and asked.

"First of all, it's all about that bizarre meteorite. Whether it is going back in time or parallel space theory, it involves the deepest scientific mysteries of the universe. “

"Time Travel!! Yuan Haochen said in surprise.

You must know that the existence of a "gap" in the space-time structure composed of two connected "black holes" is what the scientific community commonly calls a wormhole. Wormholes, also known as the Einstein-Rosen Bridge, are narrow tunnels in the universe that connect two different space-times. The warm voice continued.

"Wormholes are indeed a special structure that is allowed in general relativity, which can directly connect two points in space-time. A simple understanding of it is like two distant dots on a piece of paper, which overlap by folding. However, there are various difficulties both in astronomical observations and in theory. For example, creating and maintaining wormholes may require matter with negative energy. Yuan Haochen questioned.

"Einstein's theory of general relativity and quantum mechanics created a completely new theory of quantum gravity. They have taken antimatter a step further, and now the scientific community has successfully demonstrated that antimatter exists in our real world. And it is concluded that the super (gravitational) force field of the wormhole can also be neutralized by antimatter. (There is an interesting difference between "positive matter" and "antimatter", the former having a "positive mass" and producing energy, and the latter having a "negative mass" but sucking out the surrounding energy.) Theoretically, as long as we can build a stable wormhole, we can cross time and space. Mathematicians call this a multiplyconnectedspace. Building a wormhole requires at least three steps: the first step is to find or build a wormhole and create a tunnel to connect two different areas in space. The second step is to stabilize the wormhole. With the negative energy generated by quanta, wormholes allow signals and objects to travel safely through it. Negative energy resists the wormhole from becoming dense to infinity or near-infinity. In other words, it prevents the wormhole from evolving into a black hole. The third step is to pull the wormhole and try to separate the entrances and exits of the wormhole from each other. If there is a suitable place in space for both ports, the time difference will remain constant. This sounds like science fiction, but it is indeed a real research project of top scientific institutions such as the Interstellar Exploration Alliance and NASA in the United States. The warm voice continued.

"But scientists have not yet figured out whether wormholes only allow light to pass through. Or can a spaceship travel through it? Also, the "wormhole" must be stable enough and open long enough for people to have enough time to drill into it. Because according to quantum theory, this wormhole will close in an instant under the action of force. “

"If you want to maintain the stability of a large wormhole, the amount of energy required is really immeasurable. Maybe there is a supercivilization in the universe that can control it, but with our technological strength, it is still too far behind. However, if the size of the wormhole is calculated in Planck length (about 10 to the minus 33rd power), then it only takes a certain number of pulses of energy to stabilize it, and then we can swell it to a usable size by increasing the energy. “

"However, a wormhole of such a small size simply cannot allow a spaceship or even a complete living entity to pass through. What's the point? Yuan Haochen still expressed disbelief about this.

"You're right, living beings can't pass through, but intelligence information or memory information can, just like your current state." A warm voice replied.

"Even if many technical difficulties are overcome, the creation of time channels will open a Pandora's box full of paradoxes. For example, the famous "grandmother fallacy", if a person really went back in time and killed his maternal grandmother before his mother was born, would the time traveler himself still exist? “

This is related to another theoretical possibility, the "multiverse" theory - that there is not only one world, but many parallel worlds. So far, the multiverse can theoretically be divided into three categories: quantum mechanical multiverse system, general relativity multiverse system, and eddy supercharged multiverse system. Theoretically, countless universes are connected to each other through "wormholes". You go back in time, but it may not be your own world, but a dimensional dimension similar to your history. In fact, the problem of turning back time and the multiverse theory are among the world's most difficult problems in the history of human physics. It is very difficult for our current science and technology to explain all the doubts really thoroughly. But just because a problem can't be solved by humanity doesn't mean it can never be solved! Just because humans can't prove it doesn't mean it doesn't exist! “

"I already understand what you mean, according to you, I will go back in time through the space-time passage of the wormhole, or will I go back to the past in a parallel universe?" "Indeed!" The warm voice replied in the affirmative.

"Then why do I have to go back in time? Is there any necessary reason? Yuan Haochen raised a new question.

"There are two inevitable reasons!" The warm voice replied very seriously, "First, if you don't go back to the past, the other Yuan Haochen will always be a scumbag, and he is likely to go to Lao Dongfang to learn to cook after the college entrance examination, and all the wonderful stories that come from you have nothing to do with him." Second, the current situation has become very complicated after the forcible invasion of your brain by the Genesis 8 artificial intelligence, and one of the two of us must choose to leave, otherwise we will remain in a deep coma. “

"After I leave, you will awaken and gain consciousness, and then I will go through a cycle and become the person you are now?" Yuan Haochen asked.

"Yes, whether it's going back in time or parallel universe theory, this can be explained by a little game. All the Yuan Chens in the space-time or parallel worlds are sitting in a circle of seats that are connected from end to end, and if all the Yuan Chens get up and move forward one seat, everyone will finally have a new seat. ”

"It's still incredible, but I get the idea. Your mission is done, now it's my turn. “

(To be continued) (Welcome to join the book friends exchange group: 529839423)