The latest quantum gravity theory reveals the nature of time and space, suggesting the history of the universe
Author:Astronomy online Time:2022.08.26
What will happen if there is no starting point in the universe?
[Big Bang-Swelling of the Universe]
At the beginning, there may be no starting point there. Maybe our universe has always existed, a new quantum gravity theory reveals how this mechanism works.
"The facts include too many things, but most people may associate them with science fiction and even fantasy." Bruno Bento said that he is a physicist who studies the time nature of Liverpool University in Britain.
In his research, he adopted a new quantum gravity theory -accidental collection theory. In this theory, space and time are decomposed into a large amount of time and space that are not connected to each other. To some extent, there is a basic space -time unit in this theory.
Bento and his partners used this accidental collection method to explore the starting point of the universe. They found that the universe may not have a starting point, and it may have always existed in the eternal past, but it did not evolve until we recently evolved the big bang.
【Quantum gravity】
Quantum gravity may be the most frustrating issue facing modern physics. We have two particularly effective theories about the universe: quantum physics and general theory of relativity. Quantum physics proposes a successful theoretical interpretation of the three micro -power (electromagnetic, powerful, and weak power) of the four basic forces. The general theory of relativity, on the other hand, is the most powerful and complete description of all gravity.
But if it is not its advantages, the general theory of relativity is imperfect. At least two specific places in the universe, the mathematical style of general relativity does not work, and cannot be used to predict reliable results: the center of the black hole and the starting point of the universe. These areas are called strange points. They are the collapse of our existing laws of physical law. They are also mathematical warning signs, reminding us that the general theory of relativity has been tripped by ourselves. Near these two types of strange points, gravity becomes incredible at a small scale.
Therefore, in order to solve the mystery of the strange point, physicists need to have a tiny explanation of strong gravity, also known as the quantum theory of gravity. There are many competitors in this field, including string theory and ring -shaped quantum gravity theory.
Another theory fully rewrite our understanding of time and space.
【Occasionally gather theory】
In all existing physical theories, time and space are continuous. They formed a smooth structure that constitutes all reality foundations. In such a continuous space -time, two points can approach infinitely in the space, and the occurrence of two things can also be infinitely close in time.
"Facts include too many things, but most people may associate them with science fiction and even fantasy," said Bruno Bento.
However, there is another method, which is called accidental set theory, and re -conceives time and space as a series of separated space -time blocks, or time and space "atoms". This theory strictly limits how close the incident can be separated in time and space, because they cannot be closer than the size of the "atom" in time and space.
For example, if you look at the screen and read this, everything on the screen looks smooth and continuous. But if you look at this screen with a magnifying glass, you may see pixels that are divided into space, and you will find that it is impossible to rely on two images to be closer than a single pixel.
This physics theory excites Bento. "I found that this theory was very excited. It not only tried to explore the field of basics -to become a method of explaining quantum gravity, and reinterpreting the concept of time and space itself. What does the physical world mean, how real your past exists in physical existence, and whether the future exists. "Bento told" on -site science ".
Time and space are composed of separate space -time or "atoms", similar to pixels that form a computer image.
【The starting point of time】
Occasionally the collection theory provides important suggestions for the nature of time.
“偶然集合思想中的绝大部分是:时间片段是物理上真实存在的东西,它不应该被归于一些浮现的幻想,或者一些发生在脑海中的东西,使我们认为时间在流逝;这一片段It is essentially a representation of a physical theory. Therefore, in the accidental collection theory, an accidental collection will add a "atom" at a time and getting bigger and bigger. "Bento said.
Occasionally, the method of collecting the method of the Big Bang is exactly the problem of the Big Bang, because in this theory, it is impossible to exist. It is impossible for matter to be infinitely compressed to a small point, and they cannot be smaller than the size of a space -time atom.
So without the bang's strange point, what will the starting point of the universe look like? This is a place for Bento and his collaboration, Starf Zaleire, a place where a graduate student of an imperial academy continues to study, and explores what happened in the early days of the universe in the universe. Their research results appeared in a paper published on September 24th, from the pre -printed on the papers, the library ARXIV. (This paper has now been published in a scientific magazine reviewed by peers.)
"This paper carefully studied whether there must be a starting point in the accidental collection method," Bento said: "In the initial accidental collection of ideas and driving mechanisms, it was thought that an accidental collection has not evolved from what we see today. However, in our research, the universe has no Big Bang as the starting point. Because the accidental collection exists infinitely in the past, there is always something in the past. "
Their results imply that the universe may have no starting point -it may have always existed.The Big Bang we perceive may be just a specific moment, in an eternal incident evolution, not a real starting point.However, there are still many jobs that need to be done.We still don't know if this accidental collection method that has no starting point can allow us to use existing physical theories to explain the complex cosmic evolution during the Big Bang.
"Some people still ask if this accident theory can be explained in a reasonable way, or such a driving mechanism means in a broader area, what does it mean in the real physical world, but we do show that this structure is possible,"Bento said: "So at least in mathematics, this can be achieved."
In other words, this is ... a beginning.
By: Paul Sutter
FY: I heard that there is a temple on Marson Mountain
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