"The so-called closed timelike curve supercomputing model is a hypothetical concept."
"They are divided into multiple types, but no matter which type they are, they all involve the concept of time. They are generally divided into reverse space-time type closed time-like curves and infinite space-time type closed time-like curves."
Lu Yuanming looked at the book in his hand very hard. At the same time, he kept looking up at the blackboard. On the blackboard, there were experts writing formulas quickly, explaining everything to him while writing.
"...In the last lesson, we talked about the limits in the field of computing. Any calculation at the physical level will have a limit value, which is the Bremermann limit."
“In the material universe, because the speed of light is a limited value, and through the mass-energy equation, we can draw the following conclusion: under the limited scale and mass of the universe, the information processing limit of matter is the Bremermann limit, which is given The limit calculation number that can be reached under time cannot be exceeded, otherwise the matter will collapse into a black hole. At the same time, the information capacity will also comply with the Beckstein upper limit. This is the limit of the computing field. Of course, our current technological distance is like this The limit value is still far away.”
"Then are there any calculation models that can surpass the Bremermann limit and the Beckstein limit? The answer is yes, and there are many... The decision maker can refer to the aspects of super-light navigation and information transmission."
Lu Yuanming nodded slightly.
The speed of light cannot be surpassed. The closer a substance with rest mass is to the speed of light, the closer its mass is to infinity. From a theoretical and computational perspective, matter with rest mass can never reach the speed of light, because all the mass and energy of the entire material universe None of them can reach this number, infinite ∞.
The same is true for the quantum basis of calculation and information. The Bremermann limit is the limit in calculation magnitude similar to the speed of light.
But that doesn’t mean there’s no faster-than-light travel in the universe.
Curvature navigation is one of the super-light navigation methods, and among the super-light navigation methods that Lu Yuanming now knows, wormholes, space gates, space-time jumps, etc. are all super-light navigation.
This is actually a way to bypass the impossible problem of allowing matter with rest mass to reach the speed of light, thereby allowing matter to travel faster than the speed of light.
Obviously, the so-called Bremermann limit of the computational limit and the Beckstein upper limit of the information limit can also be bypassed through certain methods.
When the expert saw Lu Yuanming nodding in approval, he continued: "Let's not mention other methods for the time being. Here we mainly talk about the closed time-like curve supercomputing model, which uses the time layer to reach beyond the Bremermann limit and Beckstein. As for the upper limit, we just mentioned that there are two calculation models for closed time-like curves, the first is the inverse space-time closed time-like curve."
"The inverse space-time closed time-like curve calculation model is a time-causal calculation model in which the reverse effect is the cause. There is an interesting logical concept here, that is, the complete works of Shakespeare's literature. A person in the future has collected the complete works of Shakespeare's literature. And then give it to Shakespeare who had not yet written these stories, so the question is...where did the complete literary works of Shakespeare come from?"
"The calculation model is to directly obtain the effect through the inverse time curve, and then the universe world repays the cause. That is, in order to make the logic consistent and the cause and effect balance, the world must give the cause that the effect matches, so the inverse space-time closed time-like curve This is the conceptual meaning of the computational model, no matter how large the calculation is, it can directly point to the 'result'."
Lu Yuanming looked at the blackboard carefully. After a while, he nodded and said: "Although it is incredible, I can understand this logical concept. Please continue."
The expert breathed a sigh of relief and continued: "Although there are many variants of the reverse space-time closed time-like curve calculation model, the general concept is this. So let's explain the second type, which is the infinite space-time closed time-like curve calculation model. Time-like curve.”
"This type of model involves a concept, which is the malament-hogarth space-time concept in general relativity."
The expert began to write a lot of formulas on the blackboard and draw graphics, but at this step, Lu Yuanming began to understand something.
The expert still explained to Lu Yuanming dutifully: "This is a conceptual space-time model allowed to exist in the general theory of relativity. In this model, a compact set is considered at this point, and at the same time,..."
Lu Yuanming's eyes widened and he watched carefully. Then his mind became more and more divergent, and he even began to think about what to eat for lunch...
"Snapped!"
Lu Yuanming slapped himself, which scared the expert to stop immediately and looked at him uneasily.
"Sir, please continue." Lu Yuanming said seriously.
But...
That’s it for other things. Lu Yuanming is not afraid of all challenges and difficulties. To put it bluntly, there is nothing he can’t do when he is pressed, except... math problems.
Fortunately, this expert is indeed a very capable professor in the education field. When he discovered that Lu Yuanming's eyes were about to turn into a spiral shape, he immediately changed his teaching methods and never mentioned specific numbers or coordinates on graphics. , but explain all this by analogy.
"Your Excellency the Determinator, you can think of this as a special world in the concept of time and space. In this world, time and space are resources or data that can be quantified, similar to... similar to air and oxygen! Your Excellency the Determinator should You know, the higher you go on the plateau, the less oxygen there is and the lower the air pressure, and vice versa, right?" the expert explained.
Lu Yuanming returned to normal and nodded immediately.
The expert smiled and said: "You can understand the space-time model in the same way. You can think of this coordinate graph as a plateau and a trough. The higher the plateau, the less time, and the higher the trough, the more time. Uh, the time here is How much, you can think of as mobility, that is, where there is less time, time passes slowly, and where there is more time, time passes faster. For example, in the plateau area, one second is one second, and in the trough area, our one second There it could be one year, ten years, a hundred years, a thousand years..."
The expert racked his brains to think, and then he suddenly realized: "It's similar to the heaven in Eastern mythology! Yes, one day in the sky and one year on the earth are similar to this concept!"
Lu Yuanming was also stunned. He sighed and said, "Sir, you said it very well. I probably understand the meaning of this concept of time and space."
The expert wiped the sweat from his forehead and continued: "This space-time model is a concept, so it can be closer to the limit. That is, the lower the valley, the faster the time flows and the more time there is, then move this valley to The limit is approaching, and when it reaches this point, time will theoretically be close to infinity, that is, one second on the high ground, and infinite time inside.”
"At this time, we put a special computer into this point, and then input a large-scale calculation problem into the computer, such as... um, directly calculate the truth of the universe or something. Theoretically speaking, the amount of calculation is infinite. , but because the time at that point is also infinite, we on the high ground can see that after one second passes, the answer that theoretically requires an infinite amount of calculation information and an infinite amount of time can be obtained within one second. It was given because the computer actually experienced infinite time!"
"This is the second largest category of closed time-like curve calculation models, infinite space-time closed time-like curves."
Lu Yuanming thought about something carefully. After a moment, he nodded silently, thanked the expert and sent him away.
By this time, Lu Yuanming had completely understood Zhuge Cun's suggestion.
First of all, a black hole is an extreme bend in the curvature of space-time. There is a limit called an event horizon. Once it crosses the event horizon, it is an absolute wall that cannot escape even at the speed of light.
The extreme curvature of space-time causes the closer to the black hole event horizon, the stronger the pendulum effect, which is the so-called slower time passes.
According to the theoretical value of the theory of relativity, once a person enters the event horizon, the time flow rate of the external universe will approach infinite speed. That is, within one second of the event horizon, the external material universe will most likely have entered heat death.
Of course, these are theoretical calculation numbers. The black hole itself is an unsolved mystery. All the physical laws inside are beyond the limits and cannot be explored and calculated by current human technology. This is also the core contradiction between the theory of relativity and quantum mechanics. point.
But one thing that is certain is that the closer you are to a black hole, the stronger the pendulum effect is, and the slower the time you experience is. When you feel like a day has passed near a black hole, it may have been decades, hundreds, or thousands of years in the outside world. It’s been a long time.
And this is what Zhuge Cun calls the anti-closed time-like curve supercomputing model plan!
This definitely refers to the infinite space-time type closed time-like curve, that is, standing in a place where the flow of time is slow, and through the time acceleration of the pendulum effect, a certain super-magnitude calculation problem can quickly obtain results.
Zhuge Cun's plan is for Lu Yuanming to take all humans into the moon, and then fly to the edge of the black hole at near light speed, flying around outside the event horizon. The moon and all humans will only feel that a day or a few days have passed, but the outside world Time has actually changed dramatically, perhaps tens of thousands of years have passed.
"But there is a fatal problem here, that is, our current human technology is not enough to measure the environmental data around the black hole and the event horizon. We can't even confirm the laws of physics. To put it simply, we don't know where the pendulum effect is. We don’t know the exact distribution location of the event horizon, so rushing towards a black hole is like a blind man rushing into a minefield, it all depends on luck." Zhuge Cun explained.
This is actually the reason why Tang Zhe'an didn't think about rushing towards the black hole.
Humans cannot dance outside the event horizon of a black hole!
This is no longer a minefield, this is just like walking in the death zone of the meat grinder battlefield!
Even if Lu Yuanming can sail the moon at close to the speed of light, and this kind of sailing does not have any vector change at all, it can be determined that the strong gravitational change of the black hole can be isolated during this sailing. If it rushes directly towards the black hole, the most likely possibility is that the moon Disappeared from sight.
"So we need a huge amount of computing power! This computing power has exceeded the imagination of our current human technology. We cannot achieve this computing power, so..."
"That's why half a million, one million, one and a half million people died."
"We build countless computers in the outside world, and then the outside time approaches infinity. Ours may only be a few seconds, and the outside world is years and decades. With so many computers and so much time calculation, we can obtain the results in a black hole. forward data!”
"This is...the plan to see you again in the future!"
