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Author Topic: Why aren't all quarks clumped together?  (Read 3055 times)

Offline DoctorBeaver

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Why aren't all quarks clumped together?
« on: 21/02/2008 09:26:33 »
If the strength of the strong force increases with distance, why aren't all the quarks in the universe clumped together in a big heap?


 

Offline lightarrow

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Why aren't all quarks clumped together?
« Reply #1 on: 21/02/2008 12:58:52 »
If the strength of the strong force increases with distance
The strenght of the strong force between nucleons decreases with distance faster than coulombian force. What increases with distance is the strenght of the force between the quarks inside every nucleon; it's not the same.
 

Offline Soul Surfer

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Why aren't all quarks clumped together?
« Reply #2 on: 21/02/2008 19:59:48 »
Given extreme densities (or pressure) a quark gluon plasma is possible at extreme temperatures, but at the relatively low temperatures and pressures currently applying in most of the universe ie less than 100 million degrees K and densities less than a few thousand tons per CC  that includes the cores of normal stars and white dwarfs if you separate quarks on nucleons the excess energy just goes on to make more quarks which appear as mesons (quark antiquark pairs)
 

Offline DoctorBeaver

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Why aren't all quarks clumped together?
« Reply #3 on: 21/02/2008 22:24:45 »
Alberto & Ian - thank you. I understand it now.
 

Offline lightarrow

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Why aren't all quarks clumped together?
« Reply #4 on: 22/02/2008 15:41:18 »
Alberto & Ian - thank you. I understand it now.
Very well! Can you please explain me Ian's answer, then?
(Not to verify your real understanding, but because I don't have the courage to admit I didn't understand his answer.  :))
 

Offline DoctorBeaver

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Why aren't all quarks clumped together?
« Reply #5 on: 22/02/2008 20:14:45 »
Alberto & Ian - thank you. I understand it now.
Very well! Can you please explain me Ian's answer, then?
(Not to verify your real understanding, but because I don't have the courage to admit I didn't understand his answer.  :))

When the temperature and pressure are great enough - hotter and denser than just about anything in the universe today, including inside "normal" stars - a quark-gluon plasma is formed. If the temperature & pressure is less than that, then separating the quarks inside a nucleus will produce more quark/antiquark pairs. I think  ???

Ian will correct me if I am wrong.
 

Offline Soul Surfer

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Why aren't all quarks clumped together?
« Reply #6 on: 23/02/2008 23:09:37 »
That's correct my furry friend.
 

Offline DoctorBeaver

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Why aren't all quarks clumped together?
« Reply #7 on: 24/02/2008 08:52:35 »
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Why aren't all quarks clumped together?
« Reply #7 on: 24/02/2008 08:52:35 »

 

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