The Hagedorn thermostat

Abstract

A system H with a Hagedorn-like mass spectrum imparts its unique temperature TH to any other system coupled to it. An H system radiates particles in preexisting physical and chemical equilibrium. These particles form a saturated vapor at temperature TH. This coexistence describes a first order phase transition. An H system is nearly indifferent to fragmentation into smaller H systems. A lower mass cut-off in the spectrum does not significantly alter the general picture

Four pages, one figure

References in corpus (3)

• Lattice QCD at Finite Temperature and Density
• Particle Freeze-out and Discontinuities in Relativistic Hydrodynamics
• Energy dependence of transverse mass spectra of kaons produced in p+p and p+pbar interactions.A compilation

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• The Quark-Gluon Plasma: a Perfect Thermostat and a Perfect Particle Reservoir
• Probing the tricritical endpoint of QCD phase diagram at NICA-FAIR energies
• Remarkable Features of Decaying Hagedorn States