Chapter 75: Two Methods of Dark Matter Discovery
Institute of Cosmos!
At this stage, because of the research on dark matter, many astrophysicists and astrophysicists from the National Astronomical Observatories and the Institute of Physics of the Xia Academy of Sciences have poured into the Institute of Cosmos.
For dark matter research, one of the two academies has made a lot of preparations.
The astronomical telescope of the National Astronomical Observatory and the particle accelerator of the Xia Academy of Sciences are on standby.
At the moment, in a large conference room, many researchers are discussing the construction of dark matter models.
The so-called dark matter model is a dark matter model built with mathematical and physical knowledge based on all the information of dark matter under the premise of assuming the existence of dark matter.
It's equivalent to saying that everyone has never seen something, but assuming it exists, then you have to build a model of that thing for everyone to study, a bit like mathematical modeling.
More than 30 astrophysicists from all over the country sat in the conference room.
The focus of the controversy is Academician Yoshiba of the Institute of Physics of the Xia Academy of Sciences and Academician Zong Shi of the National Astronomical Observatories.
Both academicians are well-known astrophysicists in the country.
Both of them have high achievements in the field of astrophysics, but both of them are very stubborn, especially in the academic field, and neither is convinced.
Yoshiwa and the others were arguing there, and the rest of them were looking at them, echoing their arguments from time to time.
Yoshiwa said: "The emergence of the Higgs particle has confirmed the feasibility of the Standard Model of dark matter, and after a large number of experiments, it has been proved that it is more feasible to surpass the Standard Model. ”
The Higgs particle is the Higgs boson, and it is known as the God particle.
It is a kind of boson with zero spin predicted by the Standard Model of particle physics, which has no electric charge or color charge, and decays immediately after generation.
That is, death just after birth.
It was discovered in 1964 by the English scientist Peter Brown. Higgs proposed the existence of the Higgs field and went on to predict the existence of the Higgs dice pion.
In 2013, physicists at CERN used the Large Hadron Collider to discover the Higgs boson, which became the theoretical support for the Higgs field.
The Higgs boson also exists in the universe, and it has four energies, including dark matter, the non-zero stationary mass of neutrinos, and the matter-dark matter asymmetry of the universe, which can be used to study the unification of strong interactions, electroweak interactions, and gravitational interactions, as well as the origin of the universe.
"Therefore, I think the dark matter model should have general relativity at its core."
When Soyo heard Yoshiha's words, he argued, "I object, although Higget particles and dark matter are both products of the study of the origin of the universe, there is a big difference between them. ”
"In terms of properties alone, Higgon particles are very different from dark matter."
"Dark matter is the least visible of all the particles in the universe, and it may be the main component of matter in the universe, but it does not belong to any of the known substances that make up visible celestial bodies."
"The Higgs particle, on the other hand, is the more discoverable particle in the universe."
The reason why it is easier to detect is that the Higgs particle was discovered with the help of the Large Hadron Collider shortly after it was built.
The other three of the four major particles of the universe have not been discovered, with dark matter being the most difficult to find.
"So, I think that the dark matter model should be built with gravity at the core."
The general theory of relativity was proposed by Albert Einstein, and gravitation was proposed by Newton.
These two are two of the strongest in physics.
Their research has influenced the physics community to this day, and many theories have not yet been demonstrated.
The physics community will be affected by them for hundreds of years.
Newton believed that all things have a force to attract each other, that is, gravitational force.
And this gravitational force is directly proportional to the mass of the matter, and inversely proportional to the square of the spacing of the matter.
Gravitation cannot solve how gravity is transmitted and acted between objects.
Therefore, in gravitational force, gravity is a transcendent effect, and the transmission of gravitational force does not take time by default.
Later, Einstein proposed the special theory of relativity, which believed that the speed of light is the ultimate speed of information transmission in the universe.
As a result, Newton's gravitational overdistance effect clearly contradicts the special theory of relativity.
It was not until later that Einstein proposed the general theory of relativity that this contradiction was completely resolved.
The general theory of relativity holds that the essence of gravitational force is the curvature of space-time, and mass is the cause of the curvature of space-time.
That is, there is no gravitational force in general relativity, and the reason why two objects attract each other is because of the equivalent effect caused by the motion of the object in curved space.
This equivalent effect is described by the gravitational field formulation of general relativity, which, where gravity is weak, degenerates into the gravitational law of Newtonian mechanics.
Therefore, general relativity and gravitation, partly in conflict, and partly in addition to gravitational in general.
In today's scientific community, gravitation has been recognized by everyone.
However, the general theory of relativity has not yet been recognized by everyone, and there are still many doubts in it, which are being overturned or recognized by the entire scientific community little by little with the passage of time.
Next, the two argue over their own opinions.
Although arguing, the two did not rise to a personal conflict.
After all, they are only arguing academically and have nothing to do with personal contradictions.
Academics belong to academics, and personal contradictions belong to personal contradictions, and there is no intersection between the two.
The rest of the people just watched their arguments, and that's what academics are all about, which requires arguments and arguments.
Otherwise, there can be no truth.
After a long time, Ye Fei waved his hand and smiled: "Okay, two, don't fight yet, since one of you thinks it's better to use general relativity and the other is good to use gravitation, then let's do a competition!" ”
"You two each take some people, one with general relativity and one with gravitation."
"Which of you builds a good dark matter model, we'll use whichever one we use."
"What do you think?"
Ji Yu and Zong Shi glanced at each other, and Ji Yu said, "Okay, that's it." ”
Zong Shidao: "I agree! ”
Ye Fei looked at the rest of the people: "You can each join them, you can join whichever group you want, it's completely voluntary." ”
Yoshiwa and Soyo immediately looked at the rest of the people, they wanted to invite these people to join their group.
After all, they can't build a dark matter model alone, and they need a lot of help.
Yoshiwa said, "Everyone, join my group, I think it is very feasible to build a dark matter model using general relativity. ”
"Academician Liu, Academician Zhang, Professor Xu, Professor Yang...... Are you coming? ”
Zong Shidao: "Everyone, join my group, I think it is very feasible to build a dark matter model with gravity. ”
Academician Zhou, Academician Sun, Professor Wang...... Are you coming? ”
In the next time, the two began to pull the academicians and professors present.
Ye Fei saw this situation and knew whether this situation would end for a while and a half.
So, Ye Fei stood up and walked out of the conference room and returned to his office.
In the study of dark matter, building a model is only the first step, the second step is to study the dark matter field, and the third step is the properties.
The final step is to discover dark matter, followed by the capture of dark matter.
The next step is to study dark matter based on the dark matter found in order to prove the field nature of dark matter.
It is only at this point that dark matter can be applied.
Ye Fei looked at the dark universe star map on the computer screen, and said in his heart: "There is dark matter, there is dark energy, and there is also a dark universe, I don't know if there is dark life." ”
The universe is vast, and no one knows whether life on Earth is the only life in the universe.
But many people predict that there is absolutely no life on Earth and life on other planets in the universe.
The reason why life on other planets has not been discovered so far is that the earth's technology has not yet reached the level of exploring other civilizations, and the second is the restriction of life structure by earthlings.
The so-called life structures, such as the physical life on the earth, are all carbon-based life.
But some scientists predict that there is another type of life called silicon-based life.
The difference between carbon-based life and silicon-based life is that silicon-based life is more structurally stable.
Silicon-based life, on the other hand, has an additional electron layer on the structure of carbon atoms, which also makes silicon-based life more unstable.
Therefore, some scientists believe that carbon-based life is the only life in the universe.
Of course, there are also people who think that maybe there are particles in the universe that are more stable than carbon atoms, or that are close to carbon atoms in stability.
Then, this element can also become a living structure.
Ye Fei said in his heart: "The dark universe is there, the dark matter is there, the dark energy is there, if there is another dark life......
"The dark universe is invisible, so is dark life also invisible."
"And what kind of life is this?"
Ye Fei smiled bitterly and shook his head slightly, feeling that he had a little brainstorming, where is this science, this is writing science fiction!
No, science fiction is not so science fiction, this is writing fantasy.
Ye Feixin said: "Let's talk about dark matter, it is too difficult to study dark matter with theory, if you can obtain dark matter from the universe, and then deduce the theoretical knowledge of dark matter according to the essence of dark matter, it will be much simpler." ”
This is like building an atomic bomb, and if you have a manufactured atomic bomb in front of you, and you can deduce the theory and application from the made atomic bomb, then it will be many times easier to make an atomic bomb.
At this moment, there was a knock on the door outside!
Ye Fei said: "Please come in!" ”
The assistant walked in and said, "Dean, the video connection of the director of the Satellite Navigation System Management Office is on." ”
Ye Fei's eyes lit up when he heard this, and he smiled: "Transfer it in for me." ”
"Okay!"
After the assistant spoke, he left Ye Fei's office.
Soon, a middle-aged man appeared on the screen of the computer in front of Ye Fei.
The middle-aged man has an elegant temperament, wears a pair of glasses, has half-white hair, and looks to be in his sixties.
"Hello, Director Yang." Ye Fei said with a smile.
The Satellite Navigation System Management Office is the one that manages satellites in the sky.
"Hello, Academician Ye, I have admired the name for a long time." Director Yang said with a smile.
"Where!" Ye Fei smiled faintly and said, "I have heard of your name a long time ago, I often saw you on TV when I was a child, and I have admired you for a long time." ”
"Haha......" Director Yang laughed, feeling that Ye Fei's words made him very comfortable.
Then Director Yang restrained his smile and asked, "Let's stop praising each other, Academician Ye, I don't know what you are looking for me?" ”
Ye Fei said: "Director Yang, I heard that the Wukong satellite once went to the universe to detect dark matter, is there such a thing?" ”
Dark matter is one of the hottest and cutting-edge research in physics.
Many countries around the world are studying dark matter, such as North Li, North Russia, England, Israel and Xia, all of which have researched and sent satellites to the universe to detect dark matter.
THE WORLD'S LARGEST DARK MATTER DETECTOR IS THE NORTHERN BEAUTY OF LUX-ZEPLIN, OR LZ.
Xia Guo's Wukong satellite is a satellite that specializes in detecting dark matter.
Director Yang said: "There is such a thing. ”
Ye Fei said urgently: "Did you detect dark matter?" ”
"How can it be that easy?" Director Yang shook his head slightly and said with a wry smile: "If dark matter is detected, it will already shock the world." ”
"There's no need to argue whether dark matter exists or not."
Ye Fei was very sorry in his heart.
According to Ye Fei's understanding of dark matter, the most particles in the entire universe are not hydrogen and helium, but dark matter, accounting for 90% of all particles in the universe.
And there are so many particles that can be seen everywhere, but they have not been discovered so far.
Even sending satellites into the depths of the universe will not be able to detect dark matter.
Ye Fei shook his head in his heart: "If there is real dark matter, it will be of great help to my research." ”
Director Yang suddenly said at this time: "Academician Ye, I heard that you discovered the dark universe at the National Astronomical Observatory some time ago?" ”
"Hmm!" Ye Fei nodded.
It is not surprising that Director Yang knew about this, after all, the dark universe star map discovered at that time had been handed over to the state.
As one of the important departments of the state, the Satellite Navigation System Management Office manages the country's satellites.
With the power of this department, it is qualified to see the dark universe star map.
Director Yang said: "Our department has also seen the dark universe star map, and someone once proposed that they should go to this universe to dig up dark matter, so that we don't have to work hard to detect dark matter." ”
Speaking of this, Director Yang smiled bitterly, he also knew that the distance between the dark universe and the earth was 10 billion light years.
Even if the earth is given 500 years, it will not be able to upgrade the technology to the point where it can go to the dark universe.
When Ye Fei heard this, his eyes flickered.
Then, he shook his head in his heart, snuffing out the slightest thought in his heart.
That's impossible, at least not with current Earth technology.
Ye Fei still didn't give up and asked, "Is it true that I haven't found it at all?" ”
"Nope!" Director Yang shook his head slightly: "Since 8:12 on December 17, 2015, China has successfully launched the dark matter particle detection satellite Wukong with a carrier rocket at the Jiuquan Satellite Launch Center, and has been sailing in the universe for 18 years. ”
"But so far no dark matter has been found."
"By the way, dark matter has not been discovered, but supermassive black holes and gamma-ray bursts have been discovered, do you need these materials? I can pass it on to you if you need it. ”
Supermassive black holes are a type of black hole with masses ranging from a million to 10 billion times the mass of the sun.
Usually at the center of all galaxies, there will be one or more supermassive black holes.
On May 17, 2022, NASA released an audio clip of a black hole at the center of the Perseus Cluster, 250 million light-years away, that sounded like a horror movie.
Gamma rays, also known as γ rays, or γ particle streams.
The energy emitted by gamma rays in one second is the energy released by the sun in its lifetime, and it is the killer of cosmic civilization.
The planet through which the gamma rays passed could not hold on for even ten seconds, and finally turned to ashes.
As a result, countless planets were destroyed under gamma rays.
Ye Fei shook his head slightly and said, "I don't need these for the time being, if I need to, I will contact you." ”
"Good!" Director Yang said.
After the two chatted for a few words, they hung up the video.
Ye Fei sighed in his heart: "It seems that dark matter cannot be obtained, so dark matter can only be discovered through theory." ”
It was discovered that there are two paths to dark matter.
One is to detect it in space through satellites, and this path requires powerful technology.
After the detection of dark matter, the theoretical knowledge of dark matter is deduced according to the actual dark matter.
The second is to theoretically derive dark matter, and then make a machine to detect dark matter.
Of the two methods, the first is the simplest, but it requires a lot of technology.
The second method is the most difficult, deriving theoretical knowledge from dark matter that has never been seen before.
It is equivalent to starting something from nothing, which is very difficult.
Of course, both methods are difficult, one is demanding on science and technology, and the other is demanding on scientific research.
At this time, Ye Fei's mobile phone rang.
Ye Fei took out his mobile phone and looked at it, then frowned slightly, and muttered to himself in confusion: "Director Li? ”
The caller was the director of the Graphene Research Center.
Previously, Ye Fei developed a manufacturing method for C72 fullerene and carbon nanotubes in the Graphene Research Institute.
This led to the upgrading of the Graphene Research Institute to the Graphene Research Center, and the original director of the Graphene Research Institute to the director of the Graphene Research Center.
"What did he call me for? In other words, since I left the Graphene Research Center, I have not been in contact with Director Li and Dean Gao for a long time. ”
Dean Gao turned out to be the director of the Fullerene Research Institute of the Graphene Research Institute.
Later, the Fullerene Research Institute was upgraded to the Fullerene Research Institute, and the director was also promoted to the director.
When Ye Fei first went to the Graphene Research Institute, he did experiments with Dean Gao, and found C72 fullerene.
Ye Fei answered the phone as he spoke, and said with a smile: "Director Li, I haven't seen you for a long time!" ”
"Academician Ye, you are a celebrity now, and you haven't been back since you left our graphene research center!"
Ye Fei said with a smile: "It's my fault, I will definitely find a chance to go back in the future." ”
Director Li said: "Okay, I won't tease you, Academician Ye, do you remember that when you were doing experiments in our graphene research center, you discovered a special material from graphene, but you didn't study it carefully at that time." ”
When Ye Fei was doing experiments in the graphene research center, he would record some unknown discoveries and leave them for the rest of the people to study.
"Yes." Ye Fei said confusedly: "What's wrong?" Did you discover that substance? ”
"Of course, you don't know the magic of that material, it's amazing." Director Li said excitedly: "I have never seen such a magical material. ”
(End of chapter)