Thermodynamics with density and temperature dependent particle masses and properties of bulk strange quark matter and strangelets

Abstract

Thermodynamic formulas for investigating systems with density and/or temperature dependent particle masses are generally derived from the fundamental derivation equality of thermodynamics. Various problems in the previous treatments are discussed and modified. Properties of strange quark matter in bulk and strangelets at both zero and finite temperature are then calculated based on the new thermodynamic formulas with a new quark mass scaling, which indicates that low mass strangelets near beta equilibrium are multi-quark states with an anti-strange quark, such as the pentaquark (u^2d^2\bar{s}) for baryon nmber 1 and the octaquark (u^4d^3\bar{s}) for dibaryon etc.

14 pages, 12 figures, Revtex4 style

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• Consistent Thermodynamics for Quasiparticle Boson System with Zero Chemical Potential
• Quark confinement in an equiparticle quark model: application to stellar matter