Modelling relativistic heavy-ion collisions with dynamical transport approaches

Bleicher, Marcus; Bratkovskaya, Elena

doi:10.1016/j.ppnp.2021.103920

Cited by 44 publications

(24 citation statements)

References 497 publications

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“…For the present study we use the Ultra-relativistic quantum molecular dynamics (UrQMD) model [28][29][30] in its most recent version (v3.5). UrQMD is a dynamical microscopic transport simulation based on the explicit propagation of hadrons in phase-space.…”

Section: Model Setup and Flow Extractionmentioning

confidence: 99%

Harmonic flow correlations in Au+Au reactions at 1.23 AGeV: a new testing ground for the equation-of-state and expansion geometry

et al. 2022

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Correlations between the harmonic flow coefficients $$v_1$$ v 1 , $$v_2$$ v 2 , $$v_3$$ v 3 and $$v_4$$ v 4 of nucleons in semi-peripheral Au+Au collisions at a beam energy of 1.23 AGeV are investigated within the hadronic transport approach ultra-relativistic quantum molecular dynamics (UrQMD). In contrast to ultra-relativistic collision energies (where the flow coefficients are evaluated with respect to the respective event plane), we predict strong correlations between the flow harmonics with respect to the reaction plane. Based on an event-by-event selection of the midrapidity final state elliptic flow of nucleons we show that as a function of rapidity, (I) the sign of the triangular flow changes, (II) that the shape of $$v_4$$ v 4 changes from convex to concave, and (III) that $$v_3\propto v_1v_2$$ v 3 ∝ v 1 v 2 and $$v_4\propto v_2^2$$ v 4 ∝ v 2 2 for all different event classes, indicating strong correlations between all investigated harmonic flow coefficients.

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Section: Model Setup and Flow Extractionmentioning

confidence: 99%

Harmonic flow correlations in Au+Au reactions at 1.23 AGeV: a new testing ground for the equation-of-state and expansion geometry

et al. 2022

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“…For further details on the procedure to identify clusters -MST and coalescence -we refer the reader to the original publications of the PHQMD [34] and UrQMD [10,12,13] groups. Furthermore, the detailed description of differences between the PHQMD (and PHSD) and the UrQMD transport approaches can be found in a recent review [61].…”

Section: B Phase Space Coalescence Approachmentioning

confidence: 99%

Deuteron Production in Ultra-Relativistic Heavy-Ion Collisions: A Comparison of the Coalescence and the Minimum Spanning Tree Procedure

Kireyeu¹,

Steinheimer²,

Aichelin³

et al. 2022

Preprint

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The formation of deuterons in heavy-ion collisions at relativistic energies is investigated by employing two recently advanced models -the Minimum Spanning Tree (MST) method and the coalescence model by embedding them in the PHQMD and the UrQMD transport approaches. While the coalescence mechanism combines nucleons into deuterons at the kinetic freeze-out hypersurface, the MST identifies the clusters during the different stages of time evolution. We find that both clustering procedures give very similar results for the deuteron observables in the UrQMD as well as in the PHQMD environment. Moreover, the results agree well with the experimental data on deuteron production in Pb+Pb collisions at √ sNN = 8.8 GeV (selected for the comparison of the methods and models in this study). A detailed investigation shows that the coordinate space distribution of the produced deuterons differs from that of the free nucleons and other hadrons. Thus, deuterons are not destroyed by additional rescattering.

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“…The DQPM has been incorporated in the PHSD approach, based on Kadanoff-Baym off-shell dynamics, for the description of the partonic phase and hadronization (cf. the reviews [64][65][66], and has led to a successful description of a large variety of experimental data.…”

Section: Introductionmentioning

confidence: 99%

Exploring jet transport coefficients by elastic scattering in the strongly interacting quark-gluon plasma

Grishmanovskii,

Song,

Soloveva

et al. 2022

Preprint

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We study the interaction of leading jet partons in a strongly interacting quark-gluon plasma (sQGP) medium based on the effective dynamical quasi-particle model (DQPM). The DQPM describes the non-perturbative nature of the sQGP at finite temperature T and baryon chemical potential µB based on a propagator representation of massive off-shell partons (quarks and gluons) whose properties (characterized by spectral functions with T, µB dependent masses and widths) are adjusted to reproduce the lQCD EoS for the QGP in thermodynamic equilibrium. We present the results for the jet transport coefficients, i.e. the transverse momentum transfer squared per unit length q as well as the energy loss per unit length ∆E = dE/dx, in the QGP and investigate their dependence on the temperature T and baryon chemical potential µB as well as on jet properties such as the leading jet parton momentum, mass, flavor, and the choice of the strong coupling constant. In this first study only elastic scattering processes of a leading jet parton with the sQGP partons are explored discarding presently the radiative processes (such as gluon Bremsstrahlung) which are expected to be suppressed for the emission of massive gluons. We present a comparison of our results for the elastic energy loss in the sQGP medium with the pQCD results obtained by the BAMPS and LBT models as well as with other theoretical approaches such as lattice QCD and the LO-HTL and also with estimates of q by the color string percolation model (CSPM) and the JET and JETSCAPE Collaborations based on a comparison of hydrodynamical calculations with experimental heavy-ion data.

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Modelling relativistic heavy-ion collisions with dynamical transport approaches

Cited by 44 publications

References 497 publications

Harmonic flow correlations in Au+Au reactions at 1.23 AGeV: a new testing ground for the equation-of-state and expansion geometry

Harmonic flow correlations in Au+Au reactions at 1.23 AGeV: a new testing ground for the equation-of-state and expansion geometry

Deuteron Production in Ultra-Relativistic Heavy-Ion Collisions: A Comparison of the Coalescence and the Minimum Spanning Tree Procedure

Exploring jet transport coefficients by elastic scattering in the strongly interacting quark-gluon plasma

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