scholarly journals Role of glueballs in non-perturbative quark–gluon plasma

2007 ◽  
Vol 650 (4) ◽  
pp. 239-243 ◽  
Author(s):  
Nikolai Kochelev ◽  
Dong-Pil Min
Keyword(s):  
Quark Gluon Plasma ◽  
Gluon Plasma

scholarly journals FROM COMPLEX TO STOCHASTIC POTENTIAL: HEAVY QUARKONIA IN THE QUARK–GLUON PLASMA

2013 ◽  
Vol 28 (08) ◽  
pp. 1330005 ◽  
Author(s):  
ALEXANDER ROTHKOPF
Keyword(s):  
Quark Gluon Plasma ◽  
First Principles ◽  
Bound States ◽  
Recent Progress ◽  
Open Quantum Systems ◽  
Gluon Plasma ◽  
Quantum Systems ◽  
Heavy Quarkonium ◽  
General Complex

The in-medium physics of heavy quarkonium is an ideal proving ground for our ability to connect knowledge about the fundamental laws of physics to phenomenological predictions. One possible route to take is to attempt a description of heavy quark bound states at finite temperature through a Schrödinger equation with an instantaneous potential. Here we review recent progress in devising a comprehensive approach to define such a potential from first principles QCD and extract its, in general complex, values from non-perturbative lattice QCD simulations. Based on the theory of open quantum systems we will show how to interpret the role of the imaginary part in terms of spatial decoherence by introducing the concept of a stochastic potential. Shortcomings as well as possible paths for improvement are discussed.

scholarly journals QUESTIONS AND PROSPECTS IN QUARKONIUM POLARIZATION MEASUREMENTS FROM PROTON–PROTON TO NUCLEUS–NUCLEUS COLLISIONS

2012 ◽  
Vol 27 (23) ◽  
pp. 1230022 ◽  
Author(s):  
PIETRO FACCIOLI
Keyword(s):  
Experimental Data ◽  
Quark Gluon Plasma ◽  
Gluon Plasma ◽  
The Other ◽  
Proton Antiproton ◽  
Proton Proton ◽  
Experimental Knowledge ◽  
Polarization Measurements ◽  
Systematic Effects

Polarization measurements are the best instrument to understand how quark and antiquark combine into the different quarkonium states, but no model has so far succeeded in explaining the measured J/ψ and ϒ polarizations. On the other hand, the experimental data in proton–antiproton and proton–nucleus collisions are inconsistent, incomplete and ambiguous. New analyses will have to properly address often underestimated issues: the existence of azimuthal anisotropies, the dependence on the reference frame, the influence of the experimental acceptance on the comparison with other measurements and with theory. Additionally, a recently developed frame-invariant formalism will provide an alternative and often more immediate physical viewpoint and, at the same time, will help probing systematic effects due to experimental biases. The role of feed-down decays from heavier states, a crucial missing piece in the current experimental knowledge, will have to be investigated. Ultimately, quarkonium polarization measurements will also offer new possibilities in the study of the properties of the quark–gluon plasma.

EFFECTIVE MESONIC AND BARYONIC DEGREES OF FREEDOM IN NEUTRON STARS

2004 ◽  
Vol 13 (07) ◽  
pp. 1365-1373 ◽  
Author(s):  
MANFRED DILLIG ◽  
MATHIAS SCHOTT ◽  
EDUARDO F. LÜTZ ◽  
ALEXANDRE MESQUITA ◽  
CÉSAR A. Z. VASCONCELLOS
Keyword(s):  
Neutron Stars ◽  
Quark Gluon Plasma ◽  
Degrees Of Freedom ◽  
Gluon Plasma ◽  
Hadronic Matter

We present a sketchy survey on the role of effective mesonic and baryonic degrees of freedom in dense hadronic matter and briefly mention still very crude attempts to include constituent quarks degrees of freedom for a transition to a quark gluon plasma.

scholarly journals Flow in small and large quark-gluon plasma droplets: the role of nucleon substructure

2017 ◽  
Vol 967 ◽  
pp. 361-364 ◽  
Author(s):  
J. Scott Moreland ◽  
Jonah E. Bernhard ◽  
Weiyao Ke ◽  
Steffen A. Bass
Keyword(s):  
Quark Gluon Plasma ◽  
Gluon Plasma

scholarly journals THERMODYNAMIC POTENTIAL WITH CONDENSATE FIELDS IN AN SU(2) MODEL OF QCD

1998 ◽  
Vol 13 (11) ◽  
pp. 1723-1741 ◽  
Author(s):  
D. EBERT ◽  
V. Ch. ZHUKOVSKY ◽  
A. S. VSHIVTSEV
Keyword(s):  
Quark Gluon Plasma ◽  
Thermodynamic Potential ◽  
Gluon Condensate ◽  
Gluon Plasma ◽  
Chromomagnetic Field

We calculate the thermodynamic potential of the quark–gluon plasma in an SU(2) model of QCD, taking into account the gluon condensate configuration with a constant A4-potential and a uniform chromomagnetic field H. Within this scheme the interplay of condensate fields, as well as the role of quarks in the possible dynamical stabilization of the system is investigated.

scholarly journals Astrophysical Aspects of Neutrino Dynamics in Ultradegenerate Quark Gluon Plasma

2017 ◽  
Vol 2017 ◽  
pp. 1-11
Author(s):  
Souvik Priyam Adhya
Keyword(s):  
Neutron Stars ◽  
Quark Gluon Plasma ◽  
Fermi Liquid ◽  
Mean Free Path ◽  
Gluon Plasma ◽  
Collective Excitations ◽  
Liquid Behavior ◽  
Astrophysical Scenario ◽  
Physical Quantities

The cardinal focus of the present review is to explore the role of neutrinos originating from the ultradense core of neutron stars composed of quark gluon plasma in the astrophysical scenario. The collective excitations of the quarks involving the neutrinos through the different kinematical processes have been studied. The cooling of the neutron stars as well as pulsar kicks due to asymmetric neutrino emission has been discussed in detail. Results involving calculation of relevant physical quantities like neutrino mean free path and emissivity have been presented in the framework of non-Fermi liquid behavior as applicable to ultradegenerate plasma.

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