Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2000-10-02
Nucl.Phys. A690 (2001) 184-200
Physics
Nuclear Physics
Nuclear Theory
16 pages, latex with 2 eps figures. Abstract rewritten and references updated
Scientific paper
10.1016/S0375-9474(01)00942-3
We develop the notion of "broad-band equilibration" in heavy-ion processes involving dense medium. Given density-dependent \Km-masses we show that the equilibration at GSI energies claimed to hold in previous treatments down to $\sim \rho_0/4$, can be replaced by a broad-band equilibration in which the \Km-meson and hyperons are produced in an essentially constant ratio independent of density. There are experimental indications that this also holds for AGS energies. We then proceed to argue that {\it both} $K^+$ and $K^-$ must get lighter in dense medium at some density $\rho >\rho_0$ due to the decoupling of the vector mesons. As a consequence, kaon condensation in compact stars could take place {\it before} chiral restoration since the sum of bare quark masses in the kaon should lie below $\mu_e$. Another consequence of the decoupling vector interactions is that the quasi-particle picture involving (quasi)quarks, presumably ineffective at low densities, becomes more appropriate at higher densities as chiral restoration is approached.
Brown Gerald E.
Rho Mannque
Song Chaejun
No associations
LandOfFree
Strangeness Equilibration at GSI Energies does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Strangeness Equilibration at GSI Energies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Strangeness Equilibration at GSI Energies will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-531253