Searches for Quark Gluon Plasma and Color Glass Condensate

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Discussion Overview

The discussion revolves around the searches for quark-gluon plasma (QGP) and color glass condensate (CGC), including their conceptual foundations and recent developments in research. Participants seek updates on the latest findings, relevant papers, and conference presentations related to these topics.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant requests updates on the conceptual basis and recent findings regarding QGP and CGC, expressing interest in comprehensive reviews.
  • Another participant suggests checking conference papers and provides a link to a specific conference program for further information.
  • Links to recent presentations at the Perimeter Institute are shared, highlighting specific papers on QGP by Bill Zajc and Krishna Rajagopal.
  • A participant mentions reading a formal report on QGP from RHIC and seeks more recent assessments of the findings.
  • Discussion includes a reference to a paper discussing the early universe's state as a QGP and its transition to ordinary matter, indicating a broader context in cosmology.
  • One participant questions the absence of discussions on cutting-edge models related to QGP and CGC, suggesting their relevance to beyond the standard model theories.
  • A query is raised about the existence of mass in a quark-gluon plasma, noting that some models may exclude mass, attributing it instead to confinement.
  • Additional resources are shared, including a link to a personal webpage of a researcher involved in QGP studies.

Areas of Agreement / Disagreement

Participants express varying levels of knowledge and interest in the topic, but there is no consensus on specific findings or models. Multiple viewpoints regarding the implications of QGP and CGC remain present, and the discussion does not resolve the questions raised.

Contextual Notes

Some statements reference complex theoretical frameworks and ongoing research, which may depend on specific definitions and assumptions that are not fully detailed in the discussion.

humanino
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Dear PFers,

could somebody provide an update on the searches for quark gluon plasma, the color glass condensate interpretation, and/or their conceptual basis ? I have found a few big documents, if somebody knows where to find the latest review it would be most welcome. I would like a preview of the several hundred pages I am embarking on :smile:

Thank you very much in advance
 
Physics news on Phys.org
Hi!
I like to look at the papers presented at the conferences and then to look at the papers that they have published for more info.
Have you checked out http://www.pascos07.org/programme/
jal
 
The latest presentation is at Perimeter Institute
http://pirsa.org/
“Click” on “catch up” and you will see a list of their latest conference papers.
Read Bill Zajc’s paper first.

Quark Gluon Plasma at RHIC (and in QCD and String Theory)
Bill Zajc
Quark Gluon Plasma in QCD, at RHIC, and in String Theory
Speaker(s): Krishna Rajagopal
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I will be putting the links in my blog ... if it comes back online.
What papers are you reading?
jal
 
Thanks for the links, they were very interesting
jal said:
What papers are you reading?
working on "Hunting the QGP", BNL-73847-2005 (Results from the first 3 years at RHIC, formal report). I was wondering if there was some more recent "official" assessments.
 
You have probably found
http://www.int.washington.edu/talks/WorkShops/int_08_1/
From Strings to Things: String Theory Methods in QCD and Hadron Physics
March 24 - June 6, 2008
Seminars
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As said, in the paper that you are reading,
"It is now generally thought that the early universe was initially in a QGP state until its energy density had decreased sufficiently, as a result of the expansion of the universe, that it could make the transition to ordinary (confined) matter."
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I find it strange that there is so little discussion, on this forum, of what can only be "cutting edge". The models that "THEY" come up with have direct input into the models being developed by beyond the standard model and cosmology.
jal
 
I know that there are all kinds of people that read this thread that know a lot more than me.

Could I get an input? ...

http://www.bnl.gov/bnlweb/pubaf/pr/docs/Hunting-the-QGP.pdf

p.272 (265)
The phase diagram of bulk thermally equilibrated strongly interacting matter should be described by QCD. At sufficiently high temperature one must expect hadrons to \melt", deconfining quarks and gluons. The exposure of new (color) degrees of freedom would then be manifested by a rapid increase in entropy density, hence in pressure, with increasing temperature, and by a consequent change in the equation of state (EOS). In the limit where the deconfined quarks and gluons are non-interacting, and the quarks are massless, the (Stefan-Boltzmann) pressure PSB of this partonic state, as a function of temperature T at zero chemical potential (i.e., zero net quark density), would be simply determined by the number of degrees of freedom [2]:
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Have we got evidence that there is mass in a quark-gluon plasma?
It appears that the models being tried leave mass out and that mass is a result of confinement.
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jal
 
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