| DATE: |
2005-10-03 14:00 - |
| PLACE: |
Kenkyu Honkan Rm. 321 |
| TITLE: |
BCS-BEC crossover in relativistic superfluid |
| CONTACT: |
Tango |
| SPEAKER: |
Mr. Yusuke Nishida (University of Tokyo) |
| LANGUAGE: |
Japanese |
| ABSTRACT: |
Character change of the superfluid state due to the variation of the attractive force is investigated in the relativistic framework with a massive fermion. Two crossovers are found: One is a crossover from the usual BCS state to the Bose-Einstein condensation (BEC) of bound fermion pairs. The other is from the BEC to the relativistic Bose-Einstein condensation (RBEC) of nearly massless bound pairs where anti-particles as well as particles dominate the thermodynamics. Possible realization of the BEC and RBEC states in the quark matter is also pointed out.
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