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CERN Heavy Ion Forum
Various speakers
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Europe/Zurich
40-S2-A01 (CERN)
40-S2-A01
CERN
Description
1. Early thermalization and the ideal fluid at RHIC: an experimental view
by Raimond Snellings / NIKEF
The theoretical description of the bulk properties of the medium created at RHIC point to thermalization times less than 1 fm/c and perhaps as surprising, it is argued that the matter behaves not like an ideal gas of quarks and gluons but more like an ideal fluid. I will present the key experimental results on which these conclusions are based.
MORE INFORMATION:
http://www.bnl.gov/riken/May14-152004workshop.htm
http://www.sciam.com/article.cfm?articleID=0006EA4B-28BC-1260-A8BC83414B7F0000
2. Hints of incomplete thermalization in RHIC data
by Nicolas Borghini / CERN
The large elliptic flow observed at RHIC is often put forward as a compelling evidence for the formation of a strongly coupled quark-gluon plasma. The main argument is that the measured elliptic flow is as large as predicted by fluid dynamics models that assume full thermalization. In this talk, I shall try to show that this standard belief may not be quite true. A detailed examination of various experimental results indeed suggests that the system is not in full local equilibrium. Implications for the QCD equation of state and perspectives for LHC will be discussed.
3. QCD Plasma Instabilities and Isotropization
by Yasushi Nara /Univ. Frankfurt
We solve the coupled Wong Yang-Mills equations for anisotropic particle momentum distributions numerically on a lattice. We confirm the existence of plasma instabilities and of exponential growth of the fields which has been discussed previously within the hard loop approximation. We also rapid isotropization of the particle momenta by deflection in a strong field. This mechanism for isotropization may lead to smaller entropy increase than collisions and multiplication of hard gluons, which is interesting for the phenomenology of high-energy heavy-ion collisions.
Organiser(s): Yiota Foka, Carlos Salgado and Urs Achim Wiedemann
Note: http://home.cern.ch/a/alicedoc/www/chic/
by Raimond Snellings / NIKEF
The theoretical description of the bulk properties of the medium created at RHIC point to thermalization times less than 1 fm/c and perhaps as surprising, it is argued that the matter behaves not like an ideal gas of quarks and gluons but more like an ideal fluid. I will present the key experimental results on which these conclusions are based.
MORE INFORMATION:
http://www.bnl.gov/riken/May14-152004workshop.htm
http://www.sciam.com/article.cfm?articleID=0006EA4B-28BC-1260-A8BC83414B7F0000
2. Hints of incomplete thermalization in RHIC data
by Nicolas Borghini / CERN
The large elliptic flow observed at RHIC is often put forward as a compelling evidence for the formation of a strongly coupled quark-gluon plasma. The main argument is that the measured elliptic flow is as large as predicted by fluid dynamics models that assume full thermalization. In this talk, I shall try to show that this standard belief may not be quite true. A detailed examination of various experimental results indeed suggests that the system is not in full local equilibrium. Implications for the QCD equation of state and perspectives for LHC will be discussed.
3. QCD Plasma Instabilities and Isotropization
by Yasushi Nara /Univ. Frankfurt
We solve the coupled Wong Yang-Mills equations for anisotropic particle momentum distributions numerically on a lattice. We confirm the existence of plasma instabilities and of exponential growth of the fields which has been discussed previously within the hard loop approximation. We also rapid isotropization of the particle momenta by deflection in a strong field. This mechanism for isotropization may lead to smaller entropy increase than collisions and multiplication of hard gluons, which is interesting for the phenomenology of high-energy heavy-ion collisions.
Organiser(s): Yiota Foka, Carlos Salgado and Urs Achim Wiedemann
Note: http://home.cern.ch/a/alicedoc/www/chic/