Shell-like Structures in an expanding Quark-Antiquark Plasma

Details Shell-like Structures in an expanding Quark-Antiquark Plasma Shell-like Structures in an expanding Quark-Antiquark Plasma

1996-04-25

arxiv.org/abs/nucl-th/9604044v1

Phys.Rev.C54:1360-1365,1996

Physics

Nuclear Physics

Nuclear Theory

9 pages, 4 figures

Scientific paper

10.1103/PhysRevC.54.1360

The particle density distribution emerging from the solution of the Vlasov equation for relativistic, non-interacting particles with spherically symmetric initial conditions is shown to exhibit a shell-like structure for late fixed times in the center-of-mass (CM) frame of the system. A similar phenomenon was recently observed employing the test-particle method to solve the Vlasov equation for quarks with Nambu-Jona-Lasinio-type interactions, and was attributed to the attractive forces among the particles. Contrary to this claim, it is demonstrated here that this effect is of purely relativistic origin and is sensitive only to the mass of the particles and their initial phase-space distribution.

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