Strange Star Physics: Existence of Baryons?

[bbbl67]

TL;DR

Do strange stars organize themselves into baryons or as quark-gluon plasma?

I wasn't sure if I should post this in astrophysics or particle physics, so I'll try particle physics first, mods feel free to move it to a more appropriate forum. So I was wondering if hypothetical Strange stars exist, would the strange quarks arrange themselves into baryons (i.e. Lambda-0 or Sygma-0 baryons), or would they just be free-flowing quark-gluon plasma with strange quarks among the mix?

 

[malawi_glenn]

So I was wondering if hypothetical Strange stars exist

I do not think we need to assume the existence of these stars to answer your question within the models of such "stars"

There would not be any baryons in a strange star, it would be a quark-soup bound state (I would not call it a qg-plasma though). However, there are theories that suggests that Hyperons (baryons with s-valence quarks) can form in neutron stars which will influence the global properties of such star https://arxiv.org/abs/0811.2939

 

[bbbl67]

I didn't realize that QG plasma and Q soup were different things? I had assumed they were synonyms. What distinguishes them?

Aren't Hyperons just Baryons with Strange quarks in them? So wouldn't Lambda-0 and Sygma-0 particles be Hyperons too?

 

[malawi_glenn]

I didn't realize that QG plasma and Q soup were different things? I had assumed they were synonyms. What distinguishes them?

A qg-plasma is so hot and low pressure that you can neglect gravitational effects.
qg-plasma is in one regime of the QCD-matter phase diagram, quark matter is in another. Quark matter in strange stars would lie bewteen neutron stars and qg-plasma. I do not exactly where it is located, and no one else either because the QCD matter diagram is not fully understood yet.

From wikipedia:
Quark–gluon plasma (QGP) is an interacting localized assembly of quarks and gluons at thermal (local kinetic) and (close to) chemical (abundance) equilibrium. The word plasma signals that free color charges are allowed.

Aren't Hyperons just Baryons with Strange quarks in them? So wouldn't Lambda-0 and Sygma-0 particles be Hyperons too?

That is what I wrote. What about it did you not understand? (Sigma, not Sygma). You can read more about Baryons here https://www.physicsforums.com/insights/a-beginners-guide-to-baryons/