An unmagnetized strongly coupled plasma: heavy ion acoustic shock wave excitations

We have developed an equation of state for strongly interacting quark–gluon plasma (QGP) in the framework of strongly coupled plasma with appropriate modifications to take account of color and flavor degrees of freedom and the interactions among themselves. For this purpose we used the effective potential to improve the plasma parameter (Γ) by correcting the full Cornell potential with a dielectric function embodying the effects of the deconfined medium and not its Coulomb part alone and obtain the equation of state in terms of Γ. Our results on thermodynamic observables viz. pressure, energy density, speed of sound etc. nicely fit to the results of lattice equation of state for gluon, massless as well massive flavored plasma. We have then employed our equation of state to estimate the quarkonium suppression in an expanding QGP produced in the relativistic heavy-ion collisions. We have found that our predictions matches with the recent PHENIX data on the centrality dependence of J/ψ suppression in Au+Au collisions at BNL RHIC within the limit of other uncertainties. We have also predicted for the ϒ suppression in Pb+Pb collisions at LHC energy which could be tested in the ALICE experiments at CERN LHC.

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RAPIDITY SPECTRA FOR NET PROTON PRODUCTION AT LHC

International Journal of Modern Physics A ◽

10.1142/s0217751x1105230x ◽

2011 ◽

Vol 26 (03n04) ◽

pp. 638-639

Author(s):

PIOTR CZERSKI

Keyword(s):

Early Stage ◽

Heavy Ion ◽

Relativistic Heavy Ion Collisions ◽

Strongly Coupled ◽

Ion Collisions ◽

Proton Production ◽

Plasma Effects ◽

Rapidity Distributions ◽

Strongly Coupled Plasma ◽

Well Data

Net proton rapidity distributions are calculated, reproduce very well data obtained at AGS, SPS, RHIC and predict results for the LHC experiment.1 Presence of non-ideal plasma effects due to strongly coupled plasma in the early stage of relativistic heavy-ion collisions is investigated in the framework of non-conventional statistical mechanics.

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Effect of Space Fractional Parameter on Nonlinear Ion Acoustic Shock Wave Excitation in an Unmagnetized Relativistic Plasma

Frontiers in Physics ◽

10.3389/fphy.2021.766035 ◽

2022 ◽

Vol 9 ◽

Author(s):

M.F. Uddin ◽

M.G. Hafez ◽

Inho Hwang ◽

Choonkil Park

Keyword(s):

Shock Wave ◽

Fluid Model ◽

Reductive Perturbation Method ◽

Relativistic Plasma ◽

Polar Regions ◽

Viscous Effects ◽

Plasma Parameters ◽

Ion Acoustic ◽

Acoustic Shock Wave ◽

Space Environments

In this work, the model equation with space fractional-order (FO) is used to investigate the nonlinear ion acoustic shock wave excitations (NIASWEs) in an unmagnetized collisionless weakly relativistic plasma having inertial relativistic ions fluid with viscous effects, inertial-less non-thermal electrons and inertial-less Boltzmann positrons. To do it, the Korteweg-de Vries Burgers equation (KdVBE) is derived from the considered fluid model equations by implementing the standard reductive perturbation method. Accordingly, such equation is converted to space fractional KdVBE via Agrawal’s variational principle with the help of the beta fractional derivative and its properties. The exact analytical solutions of KdVBE with space FO are determined via the modified Kudryashov method. The influence of space fractional and other related plasma parameters on NIASWEs are investigated. The outcomes would be useful to understand the nature of shocks with the presence of non-local or local space in many astrophysical and space environments (especially in the relativistic wind of pulsar magnetosphere, polar regions of neutron stars, etc.) and further laboratory verification.

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