dorsal/arxiv
View SchemaColour-singlet strangelets at finite temperature
| Authors | M. G. Mustafa, A. Ansari |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9506021 |
| URL | https://arxiv.org/abs/nucl-th/9506021 |
| DOI | 10.1103/PhysRevC.55.2005 |
| Journal | Phys.Rev.C55:2005-2009,1997 |
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.
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"abstract": "Considering massless $u$ and $d$ quarks, and massive (150 MeV) $s$ quarks in\na bag with the bag pressure constant $B^{1/4} = 145$ MeV, a colour-singlet\ngrand canonical partition function is constructed for temperatures $T = 1-30$\nMeV. Then the stability of finite size strangelets is studied minimizing the\nfree energy as a function of the radius of the bag. The colour-singlet\nrestriction has several profound effects when compared to colour unprojected\ncase: (1) Now bulk energy per baryon is increased by about $250$ MeV making the\nstrange quark matter unbound. (2) The shell structures are more pronounced\n(deeper). (3) Positions of the shell closure are shifted to lower $A$-values,\nthe first deepest one occuring at $A=2$, famous $H$-particle ! (4) The shell\nstructure at $A=2$ vanishes only at $T\\sim 30$ MeV, though for higher\n$A$-values it happens so at $T\\sim 20$ MeV.",
"arxiv_id": "nucl-th/9506021",
"authors": [
"M. G. Mustafa",
"A. Ansari"
],
"categories": [
"nucl-th"
],
"doi": "10.1103/PhysRevC.55.2005",
"journal_ref": "Phys.Rev.C55:2005-2009,1997",
"title": "Colour-singlet strangelets at finite temperature",
"url": "https://arxiv.org/abs/nucl-th/9506021"
},
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