The PHQMD model for the formation of nuclear clusters and hypernuclei in heavy-ion collisions

• Published in: arXiv.org
• Main Authors: Kireyeu, V, Aichelin, J, Bratkovskaya, E, A Le Fèvre, Lenivenko, V, Kolesnikov, V, Leifels, Y, Voronyuk, V
• Format: Paper Journal Article
• Language: English
• Published: Ithaca Cornell University Library, arXiv.org 20.11.2019
• Subjects: Algorithms; Atomic collisions; Clusters; Computer simulation; Elastic scattering; Equations of state; Gluons; Hadrons; Heavy ions; Hypernuclei; Inelastic collisions; Ionic collisions; Molecular dynamics; Nuclear matter; Physics - High Energy Physics - Phenomenology; Physics - Nuclear Theory; Quantum chromodynamics; Simulated annealing
• ISSN: 2331-8422
• DOI: 10.48550/arxiv.1911.09496

Modeling of the process of the formation of nuclear clusters in the hot nuclear matter is a challenging task. We present the novel n-body dynamical transport approach - PHQMD (Parton-Hadron-Quantum-Molecular Dynamics) [1] for the description of heavy-ion collisions as well as clusters and hpernuclei formation. The PHQMD extends well established PHSD (Parton-Hadron-String Dynamics) approach - which incorporates explicit partonic degrees-of-freedom (quarks and gluons), an equation-of-state from lattice QCD, as well as dynamical hadronization and hadronic elastic and inelastic collisions in the final reaction phase, by n-body quantum molecular dynamic propagation of hadrons which allows choosing of the equation of state with different compression modulus. The formation of clusters, including hypernuclei, is realized by incorporation the Simulated Annealing Clusterization Algorithm (SACA). We present first results from PHQMD on the study of the production rates of strange hadrons, nuclear clusters and hypernuclei in e1elementary and heavy-ion collisions at NICA energies. In particular, sensitivity on the "hard" and "soft" equation of state within the PHQMD model was investigated for "bulk" observables.