2011/02/28 by M. D. Cozma · 70 citations
Mathematics · Physics and Astronomy · #Elliptic flow #Equation of state #Flow (mathematics) #Geometry #Heavy ion #High-Energy Particle Collisions Research #Ion #Isospin #Mathematics #Mechanics #Neutron #Nuclear matter #Nuclear physics #Nuclear physics research studies #Nucleon #Physics #Proton #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Symmetry (geometry) #nucl-th
paper · pdf · doi:10.1016/j.physletb.2011.05.002
published in Physics Letters B 700(2), 139-144 (Elsevier BV) · 13 pages, 7 figures, published Physics Letters B, final version
openalex publication_date 2011/05/07 · arxiv created 2011/06/22 · arxiv updated 2011/09/23 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We employ an isospin dependent version of the QMD transport model to study the influence of the isospin dependent part of the nuclear matter equation of state and in-medium nucleon-nucleon cross-sections on the dynamics of heavy-ion collisions at intermediate energies. We find that the extraction of useful information on the isospin-dependent part of the equation of state of nuclear matter from proton or neutron elliptic flows is obstructed by their sensitivity to model parameters and in-medium values of nucleon-nucleon cross-sections. Opposite to that, neutron-proton elliptic flow difference shows little dependence on those variables while its dependence on the isospin asymmetric EoS is enhanced. Comparison with experimental neutron-hydrogen FOPI-LAND data excludes the extreme super-soft scenarios for the high density dependence of asy-EoS. Existing neutron-proton elliptic flow difference experimental data are poised with uncertainties and cannot constrain the asy-EoS any further.