Questions tagged [quark-gluon-plasma]
A state of matter in which quarks and gluons are freed of their strong attraction for one another under extremely high energy densities.
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Are pure quark stars possible?
Has it been established that structures formed from quarks (like quark stars: https://en.wikipedia.org/wiki/Quark_star) are possible in principle ?
I have read about the possibility that inside ...
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Is quark-gluon plasma dense enough to have an event horizon with enough of it?
I've taken a few cracks and figuring this out myself, as a novice, with the equations $r_s=\frac{2GM}{c^2}$ and $M = \frac{4}{3}\rho \pi r^3$ but I think I'm just spinning in circles.
Is quark-gluon ...
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Is creation of quark-gluon plasma endothermic?
When we create quark-gluon plasma in a lab by colliding lead nuclei, does releasing the nuclear bonds give us energy? Or take it?
An astrophysical jet could be as hot as 10 trillion K:
https://www....
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Which hadrons were present after the phase transition from the post-Big Bang QGP?
This question relates to the "hadron epoch" (after the initial quark-gluon plasma, but before the end of baryogenesis).
My understanding is that the phase transition that ends the quark-...
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Matter-antimatter asymmetry during hadronization
When quark gluon plasma is created during heavy ion collisions, the QGP exists extremely briefly before hadronizing--the process where the QGP cools and quarks combine to form colorless hadrons. A ...
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Can the quark-gluon plasma of the very early universe be accurately characterized as a type of quark star?
The very early universe was dense and opaque. During the quark epoch, the entirety of the universe, up to every boundary, was a filled-in ball of QGP. Much like a star is a ball of ionized nuclei that ...
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Could there be a hybrid particle made of one quark and one or several gluons?
The question's background is that such a quark-gluon bound state
might be colour-less.
But it seems that no such particle is ever mentioned.
Is there a reason speaking against its existence?
ADDED:
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Can an electroweak plasma exist at room temperature?
Above around 246 GeV ($10^{15}$ Kelvin), the weak and electromagnetic forces are thought to be merged. See Electroweak interaction. This is thought to occur in the cores of over dense neutron stars ...
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Can free quarks exist?
I know that currently free quarks do not exist but can they exist under any circumstance? The Physicsworld article Quarks break free at two trillion degrees states that they do but I want a ...
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What particles existed in the Planck, GUT, and electroweak epochs, respectively?
What quarks, leptons, and bosons existed in each of the individual epochs of the early universe (Planck, GUT, electroweak)? Did the quantum zoo gain or lose species during these times? Or did some of ...
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Why does Pseudorapidity distribution have two peaks?
I found plots(fig2) that state that it is the sum of two gaussian distributions, but I am not able to understand its physical significance. Any help would be appreciated.[PS Why does rapidity not have ...
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Why did the quark epoch occur earlier than the lepton epoch?
I don't understand the reason and hypothesis behind why the quarks appeared first—as per the big bang cosmology—shortly after the strong and electroweak force separated. We don't know what the quarks ...
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Could charm, bottom, and even top matter form under the right circumstances?
Strange matter forms because turning some of the down quarks into strange quarks unlocks lower energy levels, and this can lower the system's overall energy at high densities. If the density was ...
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Is quark-quark interaction possible under extreme heat and pressure circumstances?
The neutron-rich core of neutron stars, underneath extreme pressure and heat, undergoes a phase transition to quark-gluon plasma. If both heat and pressure are increased to exceed beyond the TOV limit,...
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How exactly does the quark gluon plasma prevent protons from forming?
I have read this question:
The difference is that the quark-gluon plasma is governed by the dynamics of the strong interaction, which isn't very well understood, so that's what people are interested ...
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