| DATE: |
2006-03-06 14:30 - |
| PLACE: |
Kenkyu Honkan Rm. 321 |
| TITLE: |
Color Superconductivity at Strong Coupling |
| CONTACT: |
Tango |
| SPEAKER: |
Dr. Masakiyo Kitazawa (YITP, Kyoto University) |
| LANGUAGE: |
Japanese |
| ABSTRACT: |
We explore the nature of the color superconductivity in the quark matter at moderate densities which can be realized in the compact stars and/or the heavy-ion collisions.
It is shown that the pseudogap phenomenon of the quark can be seen as the precursor of the color superconductivity owing to the strong coupling nature of the quark matter at moderate densities. The possible manifestation of the Bose-Einstein condensation of the diquarks in the QCD phase diagram is discussed.
We also investigate the diquark condensation with mismached Fermi surfaces.Although it is known that the so-called gapless color superconductivities, which are candidates for the ground state of the quark matter in compact stars, have the chromo-magnetic instability at weak coupling, we show that the gapless color superconductivities can be free of the magnetic-type instabilities at strong coupling.
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