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7 papers · 1 filter
Nucleation Process in Asymmetric Nuclear Matter
D. P. Menezes, C. Providencia
An extended version of the non linear Walecka model, with rho mesons and eletromagnetic field is used to investigate the possibility of phase transitions in hot (warm) nuclear matt…
On the relativistic L-S coupling
P. Alberto, M. Fiolhais, M. Oliveira
The fact that the Dirac equation is linear in the space and time derivatives leads to the coupling of spin and orbital angular momenta that is of a pure relativistic nature. We ill…
Collective modes and current-algebraic sum rules in nuclear medium
Wojciech Broniowski, Brigitte Hiller
In-medium sum rules following from the chiral charge algebra of QCD are reviewed, and new sum rules are derived. The new sum rules relate the I^G(J^{PC})=1^-(0^{++}) excitations (q…
Flavour symmetry of mesonic decay couplings
Eef van Beveren, George Rupp
We present flavour-symmetric results for the couplings of quark-antiquark systems to meson-meson channels in the harmonic-oscillator expansion. We tabulate their values for all pos…
Comment on ``Understanding the scalar meson quark-antiquark nonet''
Eef van Beveren, George Rupp
It is shown that the incomplete scalar meson nonets found by Toernqvist (T) and Toernqvist and Roos (TR), employing a new version of the Helsinki unitarised quark model, should in…
Casimir corrections in the bound state soliton model
Norberto N. Scoccola, Hans Walliser
We consider the one-loop corrections to the SU(3) skyrmion mass within the bound state soliton approach. We show that the standard SU(3) renormalization scheme is not appropiate wi…