Colour-singlet strangelets at finite temperature

Abstract

Considering massless $u$ and $d$ quarks, and massive (150 MeV) $s$ quarks in a bag with the bag pressure constant $B^{1/4}=145$ MeV, a colour-singlet grand canonical partition function is constructed for temperatures $T=1-30$ MeV. Then the stability of finite size strangelets is studied minimizing the free energy as a function of the radius of the bag. The colour-singlet restriction has several profound effects when compared to colour unprojected case: (1) Now bulk energy per baryon is increased by about $250$ MeV making the strange quark matter unbound. (2) The shell structures are more pronounced (deeper). (3) Positions of the shell closure are shifted to lower $A$-values, the first deepest one occuring at $A=2$, famous $H$-particle ! (4) The shell structure at $A=2$ vanishes only at $T\sim 30$ MeV, though for higher $A$-values it happens so at $T\sim 20$ MeV.

Revtex file(8 pages)+6 figures(ps files) available on request from first Author

References in corpus (2)

• Strangelets at finite temperature
• Color singlet suppression of quark-gluon plasma formation

Cited by in corpus (6)

• Physics and Astrophysics of Strange Quark Matter
• Can cosmic strangelets reach the earth?
• Strangelets in Terrestrial Atmosphere
• The consequences of SU(3) colorsingletness, Polyakov Loop and Z(3) symmetry on a quark-gluon gas
• Deformed Strangelets at Finite Temperature
• Colour-singlet clustering of partons and recombination model for hadronization of quark-gluon plasma