THERMAL HADRONIZATION, HAWKING-UNRUH RADIATIONAND EVENT HORIZON IN QCD

摘要

Because of colour confinement, the physical vacuum forms an event horizon for quarksand gluons; this can be crossed only by quantum tunneling, i.e., through the QCDcounterpart of Hawking radiation by black holes. Since such radiation cannot transmitinformation to the outside, it must be thermal, of a temperature determined by thestrong force at the confinement surface, and it must maintain colour neutrality. Theresulting process provides a common mechanism for thermal hadron production in highenergy interactions, from e+ e– annihilation to heavy ion collisions. The analogy withblack-hole event horizon suggests a dependence of the hadronization temperature on thebaryon density.