Heavy-Ion Physics at the LHC

Averbeck, R.; Harris, J. W.; Schenke, Björn

doi:10.1007/978-3-319-15001-7_9

Cited by 14 publications

(20 citation statements)

References 240 publications

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“…5), where they can decrease as μ q is increased. As in the previous sections, no focusing of isentropic trajectories towards the CEP is seen with increased magnetic field but only smooth trajectories, as with the results obtained in the model SU (2).…”

Section: The Influence Of the Magnetic Field On The Isentropic Trasupporting

confidence: 88%

Influence of the vector interaction and an external magnetic field on the isentropes near the chiral critical end point

Costa

2016

Phys. Rev. D

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The location of the critical end point (CEP) and the isentropic trajectories in the QCD phase diagram are investigated. We use the (2 þ 1) Nambu-Jona-Lasinio model with the Polyakov loop coupling for different scenarios, namely by imposing zero strange quark density, which is the case in the ultrarelativistic heavy ion collisions, and β equilibrium. The influence of strong magnetic fields and of the vector interaction on the isentropic trajectories around the CEP is discussed. It is shown that the vector interaction and the magnetic field, having opposite effects on the first-order transition, affect the isentropic trajectories differently: as the vector interaction increases, the first-order transition becomes weaker and the isentropes become smoother; when a strong magnetic field is considered, the first-order transition is strengthened and the isentropes are pushed to higher temperatures. No focusing of isentropes in region towards the CEP is seen.

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Section: The Influence Of the Magnetic Field On The Isentropic Trasupporting

confidence: 88%

Influence of the vector interaction and an external magnetic field on the isentropes near the chiral critical end point

Costa

2016

Phys. Rev. D

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“…Γ 0 = 1, and then obtain solutions with different initial fugacity by scaling the result by the initial fugacity. 1…”

Section: Final Equationsmentioning

confidence: 99%

Exact solution for the non-equilibrium attractor in number-conserving relaxation time approximation

Strickland

Tantary

2019

J. High Energ. Phys.

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We extend previous studies of the conformal 0+1d kinetic non-equilibrium attractor in relaxation time approximation by enforcing number conservation through the introduction of a dynamical fugacity (chemical potential). We derive two coupled integral equations for the effective temperature and fugacity which are then solved numerically to obtain the exact solution. The resulting solutions exhibit convergence to a unique nonequilibrium attractor when the scaled moments of the distribution function are plotted as a function of the rescaled time w = τ /τ eq . This occurs even though the system is out of chemical equilibrium at late times. In addition, compared to the case where number conservation was not imposed, we find that the moments converge to their respective attractors more quickly, particularly for moments with m = 0. Finally, we compare the resulting attractor moments with predictions from different hydrodynamic frameworks.

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“…To produce the QGP in the lab, experimentalists at the Relativistic Heavy Ion Collider (RHIC) and the Large Hadron Cola e-mail: mstrick6@kent.edu (corresponding author) lider (LHC) collide ultrarelativistic nuclei in order to create a short-lived QGP with a lifetime on the order of 12 fm/c in central 5.02.TeV Pb-Pb collisions. Analysis of the data produced in the last decades has shown that many aspects of the collective behavior observed in high-energy heavy-ion collisions are well-described by relativistic viscous hydrodynamics with an equation of state that takes into account the transition between hadronic and partonic degrees of freedom [3][4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Bulk observables at 5.02 TeV using quasiparticle anisotropic hydrodynamics

Alqahtani

Strickland

2021

Eur. Phys. J. C

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We compare predictions of 3+1D quasiparticle anisotropic hydrodynamics (aHydroQP) for a large set of bulk observables with experimental data collected in 5.02 TeV Pb–Pb collisions. We make predictions for identified hadron spectra, identified hadron average transverse momentum, charged particle multiplicity as a function of pseudorapidity, the kaon-to-pion ($$K/\pi $$ K / π ) and proton-to-pion ($$p/\pi $$ p / π ) ratios, identified particle and charged particle elliptic flow, and HBT radii. We compare to data collected by the ALICE collaboration in 5.02 TeV Pb–Pb collisions. We find that, based on available data, these bulk observables are well described by aHydroQP with an assumed initial central temperature of $$T_0=630$$ T 0 = 630 MeV at $$\tau _0 = 0.25$$ τ 0 = 0.25 fm/c and a constant specific shear viscosity of $$\eta /s=0.159$$ η / s = 0.159 , which corresponds to a peak specific bulk viscosity of $$\zeta /s = 0.048$$ ζ / s = 0.048 . In particular, we find that the momentum dependence of the kaon-to-pion ($$K/\pi $$ K / π ) and proton-to-pion ($$p/\pi $$ p / π ) ratios reported recently by the ALICE collaboration are extremely well described by aHydroQP in the 0–5% centrality class.

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Heavy-Ion Physics at the LHC

Cited by 14 publications

References 240 publications

Influence of the vector interaction and an external magnetic field on the isentropes near the chiral critical end point

Influence of the vector interaction and an external magnetic field on the isentropes near the chiral critical end point

Exact solution for the non-equilibrium attractor in number-conserving relaxation time approximation

Bulk observables at 5.02 TeV using quasiparticle anisotropic hydrodynamics

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