SUCRA(さくら: Saitama University Cyber Repository of Academic Resources)は、埼玉大学に在籍する研究者の学術雑誌論文、紀要論文、科学研究費補助金成果報告書、学位論文、研究発表プレゼン資料などを登録し、広く世界に発信しています。 埼玉大学に在籍する皆様は、著作物をSUCRAを通じて発信することができます。詳しくは「成果物の登録方法」をご覧ください。
Saitama University, Graduate School of Science and Engineering
雑誌名
Physical review. C
巻
72
号
4
発行年
2005
年月次
2005
出版者名
American Physical Society
抄録
By applying the particle-number projection to the finite-temperature BCS theory, the S-shaped heat capacity, which has recently been claimed to be a fingerprint of the superfluid-to-normal phase transition in nuclei, is reexamined. It is found that the particle-number (or number-parity) projection gives S-shapes in the heat capacity of nuclei which look qualitatively similar to the observed ones. These S-shapes are accounted for as effects of the particle-number conservation on the quasiparticle excitations, and occur even without the phase transition. The present study illustrates significance of the conservation laws in studying phase transitions of finite systems.