Single-flavor color superconductivity with color-sextet pairing
Result description
We analyze the color superconductivity of one massive flavor quark matter at moderate baryon density. First, we briefly review the framework of color superconductivity. Then, we suggest a mechanism which, within QCD, can lead to formation of a spin-zerocolor-sextet condensate. The most general form of the order parameter implies a complete breakdown of the SU(3) x U(1) symmetry. However, the conventional fermionic NJL-type description in the mean-field approximation seems to favor an enhanced O(3) symmetry of the ground state. This is ascribed to the use of the mean-field approximation and possible solutions are suggested.
Keywords
The result's identifiers
Result code in IS VaVaI
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Single-flavor color superconductivity with color-sextet pairing
Original language description
We analyze the color superconductivity of one massive flavor quark matter at moderate baryon density. First, we briefly review the framework of color superconductivity. Then, we suggest a mechanism which, within QCD, can lead to formation of a spin-zerocolor-sextet condensate. The most general form of the order parameter implies a complete breakdown of the SU(3) x U(1) symmetry. However, the conventional fermionic NJL-type description in the mean-field approximation seems to favor an enhanced O(3) symmetry of the ground state. This is ascribed to the use of the mean-field approximation and possible solutions are suggested.
Czech name
Barevná supravodivost jedné kvarkové vůně s párováním v barevném sextetu
Czech description
Abstrakt: Analyzovali jsme barevnou supravodivost hmotné kvarkové vůně při středních baryonových hustotách. Navrhli jsme nový typ párování v barevném sextetu. Pracovali jsme v rámci Nambu-Jona-Lasiniova modelu v aproximaci středního pole. Selfkonzistentní výpočet ukazuje, že základní stav preferuje spontánní narušení barevné SU(3) na podgrupu SO(3), přestože nejobecnější možný tvar dikvarkového kondenzátu umožňuje kompletní narušení symetrie.
Classification
Type
Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BE - Theoretical physics
OECD FORD branch
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Result continuities
Project
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2005
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Czechoslovak Journal of Physics
ISSN
0011-4626
e-ISSN
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Volume of the periodical
55
Issue of the periodical within the volume
1
Country of publishing house
CZ - CZECH REPUBLIC
Number of pages
8
Pages from-to
9-16
UT code for WoS article
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EID of the result in the Scopus database
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Basic information
Result type
Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP
BE - Theoretical physics
Year of implementation
2005