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Chapter 423 When You Feel Good
Chapter 423 When You Feel Good
After Yang Yiyi looked at it for a while, she found that Chen Zhou hadn't moved yet.
Immediately got up, went to feel the temperature of the packing box.
Fortunately, the rice is not cold yet...
Yang Yiyi felt that it was necessary for the two of them to buy a microwave oven.
Moreover, this microwave oven is placed here with Chen Zhou.
Otherwise, Yang Yiyi was really worried about whether Chen Zhou would eat cold food every day in the future.
For Yang Yiyi who knew Chen Zhou very well, she felt that this possibility was very high.
When Yang Yiyi was in a daze, Chen Zhou's voice suddenly came from behind him.
As the sound reached his ears, Yang Yiyi's face quickly turned red.
In fact, after Chen Zhou finished the theoretical calculation of the Coulomb gauge model.
I realized I had to eat!
Then, when he got up, he found Yang Yiyi was holding something, standing there in a daze.
Chen Zhou then quietly leaned over.
When he saw the packing box in Yang Yiyi's hand, Chen Zhou's heart suddenly warmed up.
While speaking, he hugged Yang Yiyi from behind.
Not in a hurry to break free from Chen Zhou's embrace, Yang Yiyi said in a low voice: "Hurry up and eat, it will get cold in a while."
Chen Zhou put his head on Yang Yiyi's shoulder and said softly, "I'll eat later, I want to hug you."
Yang Yiyi stopped talking and let Chen Zhou hold her like this.
Chen Zhou didn't hug for long, only about 2 minutes.
Then, he kissed Yang Yiyi's face, and took the packing box from her hand.
Yang Yiyi also fled quickly, returned to the desk and sat down.
"Yiyi, how long have you been here?" Chen Zhou asked while opening the packing box.
"Hmm..." Yang Yiyi pondered for a while, "There are still 10 minutes left before an hour."
Chen Zhou froze for a moment, then smiled and started to fix his lunch.
After Chen Zhou finished his meal, he didn't immediately go to work.
Instead, he chatted with Yang Yiyi for a few words, and by the way, walked around here and there, so as to get rid of the food.
Once in the room, it was quiet again.
When there was only the rubbing sound of the pen tip and the paper, Chen Zhou and Yang Yiyi were immersed in their own world.
String theory is another method that can be used to describe the strong interactions.
A milestone in the development of this method was the equivalence of conformal fields and string theory in Anti-De Sitter space-time proposed by Juan Maldacina.
That is, Ads/CFT correspondence.
As a special case, the glueball operator under the conformal gauge theory is defined on the Ads boundary condition.
It corresponds to the string expansion field.
This is another theoretical method for calculating the mass of glue balls.
It took less than two hours for Chen Zhou to use the Ads/QCD method to obtain the mass of the glueball in the state of quantum numbers of different particles.
Take out the draft paper with the quality of glue balls separately, and stack them with the previous summary paper.
According to the plan, Chen Zhou began to study the next theoretical method.
Time is always moving forward, and Chen Zhou is also always chasing the footsteps of time.
"The QCD summation rule is one of the few theories developed in the field of particle physics that can perform such calculations based on the first principles of quantum chromodynamics..."
Looking at the content on the draft paper, Chen Zhou felt a little emotional.
Although the search for gumballs has been going on for decades.
The development of the theory is also much higher than the experimental observation.
However, this theory is still quite limited.
The QCD summation rule was first proposed by three Russian theoretical physicists, Shifman, Vainshtein and Zakharov.
Therefore, this method is also called the SVZ summation rule.
It connects hadron characteristic parameters such as hadron mass, decay constant, and neutron magnetic moment with several QCD vacuum parameters, that is, the condensation of gluons and quarks.
The SVZ summation rule builds a bridge between QCD theory and hadron spectrum.
This is a very successful bridge.
It can be used to approximate many properties of ground state hadrons.
Thinking of these three physicists, Chen Zhou thought of the paper discussing the decay of kaons.
That was a paper published by the three in JETP Letters, a professional physics journal in the former Soviet Union.
For the first time, the single-turn decay process of a strange quark has been calculated.
Moreover, Professor Shifman once simplified the corresponding Feynman diagram.
As for the simplified diagram, it is the famous "penguin diagram" in particle physics.
Chen Zhou drew the famous "Penguin Picture" on the spare space on the draft paper.
Not to mention, no wonder it is called a penguin picture, it is exactly like a penguin...
Chen Zhou smiled slightly, retracted his scattered thoughts, and returned to the QCD summation rules in front of him.
"QCD" in the QCD summation rule refers to the theoretical calculation of QCD based on OPE.
The "summation rule" refers to the summation of hadrons with the same quantum number and quark composition.
The two use the mathematical tool of dispersion integration to establish an equation, which is called the master equation.
The master equation is a direct result of the duality of the correlation function Π(q^2).
When thinking back to mathematics, Chen Zhou obviously showed more confidence.
Although physics is already far ahead of Lv6, it is beyond the reach of other disciplines.
But in front of the big brother in mathematics at Lv7, physics still has to be the younger brother.
This is also the source of Chen Zhou's self-confidence.
In any case, mathematics is the cornerstone of natural sciences, and it is also one of the cornerstones of Chen Zhou.
As for why it is one.
Chen Zhou feels that even if linguistics is unreliable, it still has to be counted as another cornerstone.
【Π(q^2)=i∫d^4xe^(iq·x)<0丨T{(JG(x)，JG(0)}丨0>】
【Among them, JG(x) and JG(0) are the interpolation flow of the glue ball, and q is the four-momentum of the interpolation flow...】
This formula contains the basic idea and calculation method of the QCD summation rule.
To put it bluntly, the valence quarks in the vacuum of quantum chromodynamics will only slightly disturb the vacuum.
The properties of hadrons depend on how their valence quarks interact with typical vacuum fluctuations.
Vacuum fluctuations can be represented by several condensations.
Like quark pair condensate, two-gluon condensate, mixed condensate and so on.
However, in the actual calculation, it is enough to consider some low-dimensional condensations in the product expansion by operators.
When Chen Zhou wrote this QCD summation rule, the starting point was the formula of the two-point correlation function.
According to the basic ideas and calculation methods here, I re-deduced one side.
Looking at his perfect deduction process, Chen Zhou couldn't help showing a smug look.
"Sure enough, an excellent physicist must be an excellent mathematician. And an excellent mathematician is called an excellent physicist every minute..."
Of course, these words only flashed in his mind for an instant.
He was just thinking about it.
Can't be true...
After all, Chen Zhou is not a proud and conceited person.
All his good feelings about himself come up for just a split second.
Then, he will be pinched off immediately.
After all, the levels of so many subjects in the system are clearly telling him.
He is still far behind!
(End of this chapter)
After Yang Yiyi looked at it for a while, she found that Chen Zhou hadn't moved yet.
Immediately got up, went to feel the temperature of the packing box.
Fortunately, the rice is not cold yet...
Yang Yiyi felt that it was necessary for the two of them to buy a microwave oven.
Moreover, this microwave oven is placed here with Chen Zhou.
Otherwise, Yang Yiyi was really worried about whether Chen Zhou would eat cold food every day in the future.
For Yang Yiyi who knew Chen Zhou very well, she felt that this possibility was very high.
When Yang Yiyi was in a daze, Chen Zhou's voice suddenly came from behind him.
As the sound reached his ears, Yang Yiyi's face quickly turned red.
In fact, after Chen Zhou finished the theoretical calculation of the Coulomb gauge model.
I realized I had to eat!
Then, when he got up, he found Yang Yiyi was holding something, standing there in a daze.
Chen Zhou then quietly leaned over.
When he saw the packing box in Yang Yiyi's hand, Chen Zhou's heart suddenly warmed up.
While speaking, he hugged Yang Yiyi from behind.
Not in a hurry to break free from Chen Zhou's embrace, Yang Yiyi said in a low voice: "Hurry up and eat, it will get cold in a while."
Chen Zhou put his head on Yang Yiyi's shoulder and said softly, "I'll eat later, I want to hug you."
Yang Yiyi stopped talking and let Chen Zhou hold her like this.
Chen Zhou didn't hug for long, only about 2 minutes.
Then, he kissed Yang Yiyi's face, and took the packing box from her hand.
Yang Yiyi also fled quickly, returned to the desk and sat down.
"Yiyi, how long have you been here?" Chen Zhou asked while opening the packing box.
"Hmm..." Yang Yiyi pondered for a while, "There are still 10 minutes left before an hour."
Chen Zhou froze for a moment, then smiled and started to fix his lunch.
After Chen Zhou finished his meal, he didn't immediately go to work.
Instead, he chatted with Yang Yiyi for a few words, and by the way, walked around here and there, so as to get rid of the food.
Once in the room, it was quiet again.
When there was only the rubbing sound of the pen tip and the paper, Chen Zhou and Yang Yiyi were immersed in their own world.
String theory is another method that can be used to describe the strong interactions.
A milestone in the development of this method was the equivalence of conformal fields and string theory in Anti-De Sitter space-time proposed by Juan Maldacina.
That is, Ads/CFT correspondence.
As a special case, the glueball operator under the conformal gauge theory is defined on the Ads boundary condition.
It corresponds to the string expansion field.
This is another theoretical method for calculating the mass of glue balls.
It took less than two hours for Chen Zhou to use the Ads/QCD method to obtain the mass of the glueball in the state of quantum numbers of different particles.
Take out the draft paper with the quality of glue balls separately, and stack them with the previous summary paper.
According to the plan, Chen Zhou began to study the next theoretical method.
Time is always moving forward, and Chen Zhou is also always chasing the footsteps of time.
"The QCD summation rule is one of the few theories developed in the field of particle physics that can perform such calculations based on the first principles of quantum chromodynamics..."
Looking at the content on the draft paper, Chen Zhou felt a little emotional.
Although the search for gumballs has been going on for decades.
The development of the theory is also much higher than the experimental observation.
However, this theory is still quite limited.
The QCD summation rule was first proposed by three Russian theoretical physicists, Shifman, Vainshtein and Zakharov.
Therefore, this method is also called the SVZ summation rule.
It connects hadron characteristic parameters such as hadron mass, decay constant, and neutron magnetic moment with several QCD vacuum parameters, that is, the condensation of gluons and quarks.
The SVZ summation rule builds a bridge between QCD theory and hadron spectrum.
This is a very successful bridge.
It can be used to approximate many properties of ground state hadrons.
Thinking of these three physicists, Chen Zhou thought of the paper discussing the decay of kaons.
That was a paper published by the three in JETP Letters, a professional physics journal in the former Soviet Union.
For the first time, the single-turn decay process of a strange quark has been calculated.
Moreover, Professor Shifman once simplified the corresponding Feynman diagram.
As for the simplified diagram, it is the famous "penguin diagram" in particle physics.
Chen Zhou drew the famous "Penguin Picture" on the spare space on the draft paper.
Not to mention, no wonder it is called a penguin picture, it is exactly like a penguin...
Chen Zhou smiled slightly, retracted his scattered thoughts, and returned to the QCD summation rules in front of him.
"QCD" in the QCD summation rule refers to the theoretical calculation of QCD based on OPE.
The "summation rule" refers to the summation of hadrons with the same quantum number and quark composition.
The two use the mathematical tool of dispersion integration to establish an equation, which is called the master equation.
The master equation is a direct result of the duality of the correlation function Π(q^2).
When thinking back to mathematics, Chen Zhou obviously showed more confidence.
Although physics is already far ahead of Lv6, it is beyond the reach of other disciplines.
But in front of the big brother in mathematics at Lv7, physics still has to be the younger brother.
This is also the source of Chen Zhou's self-confidence.
In any case, mathematics is the cornerstone of natural sciences, and it is also one of the cornerstones of Chen Zhou.
As for why it is one.
Chen Zhou feels that even if linguistics is unreliable, it still has to be counted as another cornerstone.
【Π(q^2)=i∫d^4xe^(iq·x)<0丨T{(JG(x)，JG(0)}丨0>】
【Among them, JG(x) and JG(0) are the interpolation flow of the glue ball, and q is the four-momentum of the interpolation flow...】
This formula contains the basic idea and calculation method of the QCD summation rule.
To put it bluntly, the valence quarks in the vacuum of quantum chromodynamics will only slightly disturb the vacuum.
The properties of hadrons depend on how their valence quarks interact with typical vacuum fluctuations.
Vacuum fluctuations can be represented by several condensations.
Like quark pair condensate, two-gluon condensate, mixed condensate and so on.
However, in the actual calculation, it is enough to consider some low-dimensional condensations in the product expansion by operators.
When Chen Zhou wrote this QCD summation rule, the starting point was the formula of the two-point correlation function.
According to the basic ideas and calculation methods here, I re-deduced one side.
Looking at his perfect deduction process, Chen Zhou couldn't help showing a smug look.
"Sure enough, an excellent physicist must be an excellent mathematician. And an excellent mathematician is called an excellent physicist every minute..."
Of course, these words only flashed in his mind for an instant.
He was just thinking about it.
Can't be true...
After all, Chen Zhou is not a proud and conceited person.
All his good feelings about himself come up for just a split second.
Then, he will be pinched off immediately.
After all, the levels of so many subjects in the system are clearly telling him.
He is still far behind!
(End of this chapter)
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