Relativistic potentials for a counterstreaming nuclear-matter scenario with a covariant momentum-dependent interaction

Kaon versus antikaon production at SIS energies

“…However, any conclusions about the hadron properties at high temperature or baryon densities must rely on the comparison of experimental data with theoretical approaches based on nonequilibrium kinetic theory. Among these, the covariant RBUU approach [1,2,3,4,5,6,7,8,9], the QMD [10] or RQMD model [11], and more recently the HSD approach [12] have been successfully used in the past. As a genuine feature of transport theories there are two essential ingredients: i.e.…”

Recent Progress in Quantum Hadrodynamics

“…Effective cross sections in the medium are studied in [Li93,Ma94b]. Additional momentum-dependent scalar and vector potentials, which provide a more accurate description of the optical potential, are introduced in [We92,We93a]. Shock waves are discussed in [Mo95].…”

Antiproton production in p-nucleus and nucleus-nucleus collisions within a relativistic transport approach

“…The quasi-particle properties, i.e. the nucleon selfenergies U s (p, ρ), U µ (p, ρ), are taken from [23,24,25] and are in line with the results of Dirac-Brueckner calculations [26] whereas the antiproton selfenergies are described on the basis of the σ − ω model [27] with free coupling parameters gp s and gp v . Antiprotons are propagated explicitly in the respective time dependent potentials and their annihilation is calculated nonperturbatively by means of individual rate equations.…”

“…The free parameters of the above expressions are fixed to reproduce the saturation properties of nuclear matter, the empirical proton-nucleus optical potential as well as the density dependence of U s and U µ from Dirac-Brueckner theory [26]. Explicit values for these parameters are given in [23,24,25]. The actual results for U s (p) and the zero'th component of the vector field U 0 (p) are displayed in Fig.1 for ρ 0 (≈ 0.17f m −3 ), 2ρ 0 , and 3ρ 0 .…”