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21 papers · 1 filter
Determination of V_cb from exclusive decays in a relativistic quark model
M. Beyer
In the framework of a relativistic covariant Bethe-Salpeter model for the quark-antiquark system we present a renewed determination of the Cabbibo-Kobayashi-Maskawa matrix element…
A quantum kinetic equation for Fermi-systems including three-body correlations
A. Sedrakian, G. Roepke
A single-time quantum transport equation, which includes effects beyond the quasiparticle approximation, is derived for Fermi-systems in the framework of non-equilibrium real-time…
Deconfinement at finite chemical potential
A. Bender, G. I. Poulis, C. D. Roberts +2
In a confining, renormalisable, Dyson-Schwinger equation model of two-flavour QCD we explore the chemical-potential dependence of the dressed-quark propagator, which provides a mea…
Scalar correlations in a quark plasma and low mass dilepton production
D. Blaschke, Yu. L. Kalinovsky, S. Schmidt +1
We investigate possible consequences of resonant scalar interactions for dilepton production from a quark plasma at the chiral phase transition. It is found that this production me…
Relativistic quantum kinetic equation of the Vlasov type for systems with internal degrees of freedom
S. A. Smolyansky, A. V. Prozorkevich, S. Schmidt +3
We present an approach to derive a relativistic kinetic equation of the Vlasov type. Our approach is especially reliable for the description of quantum field systems with many inte…
Dielectric function of a two-component plasma including collisions
G. Roepke, A. Wierling
A multiple-moment approach to the dielectric function of a dense non-ideal plasma is treated beyond RPA including collisions in Born approximation. The results are compared with th…