Bose-Einstein Condensation of Diquark Molecules in Three-Flavor Quark Matter(Dense QCD, Dense hadronic and quark matter, New Frontiers in QCD-Exotic Hadrons and Hadronic Matter-)
スポンサーリンク
概要
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We study the phase diagram of strongly interacting matter with three quark flavors at low and intermediate densities and non-zero temperatures in the framework of an NJL-type model with four-point interactions. At large densities, when the interactions are weak due to asymptotic freedom, quarks form loosely bound Cooper pairs. However, when the density decreases, interactions become stronger and quark Cooper pairs transform smoothly into tightly bound diquark molecules. We find that such molecules are stable at low density and temperature and that they dissociate above a temperature T_<diss> of the order of the chiral phase transition temperature T_c〜170MeV. We also explore the conditions under which these molecules undergo Bose-Einstein condensation (BEC). We find that BEC is only possible if we increase the attractive interaction in the diquark channel to (probably unrealistically) large values.
- 2007-11-09
著者
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KITAZAWA Masakiyo
Department of Physics, Osaka University
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KITAZAWA Masakiyo
RIKEN-BNL Reseach Center, Brookhaven National Laboratory
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Kitazawa Masakiyo
Riken-bnl Research Center Brookhaven National Laboratory
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RISCHKE Dirk
Institut fur Theoretische Physik and Frankfurt Institute for Advanced Studies
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SHOVKOVY Igor
Department of Physics, Western Illinois University
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Shovkovy Igor
Department Of Applied Sciences And Mathematics Arizona State University
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Shovkovy Igor
Department Of Physics Western Illinois University
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KITAZAWA Masakiyo
RIKEN-BNL Research Center, Brookhaven National Laboratory
関連論文
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