Alpha-Particle Condensation in Nuclear Systems

被引：3

作者：

Schuck, P. ^{[1
]}

Funaki, Y. ^{[2
]}

Horiuchi, H. ^{[3
]}

Roepke, G. ^{[4
]}

Tohsaki, A. ^{[3
]}

Yamada, T.

机构：

[1] CNRS, UMR8608, Inst Phys Nucl, F-91406 Orsay, France

[2] RIKEN, Inst Phys & Chem Res, Wako, Saitama 3510198, Japan

[3] Osaka Univ, RCNP, Ibaraki, Osaka 5670047, Japan

[4] Univ Rostock, Inst Phys, D-18051 Rostock, Germany

来源：

INTERNATIONAL SUMMER SCHOOL FOR ADVANCED STUDIES DYNAMICS OF OPEN NUCLEAR SYSTEMS (PREDEAL12) | 2013年 / 413卷

关键词：

nuclear matter; alpha-matter; superfluidity; Bose-Einstein condensation; strongly coupled systems; ORTHOGONALITY CONDITION MODEL; EXCITED-STATES; C-12; CLUSTERS; MATTER;

D O I：

10.1088/1742-6596/413/1/012009

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The onset of quartetting, i.e. alpha-particle condensation, in symmetric and asymmetric nuclear matter is studied with the help of an in-medium modified four nucleon equation. It is found that at very low density quartetting wins over pairing, because of the strong binding of the alpha-particles. The critical temperature can reach values up to around 8 MeV. The disappearance of alpha-particles with increasing density, i.e. the Mott transition, is investigated. In finite nuclei the Hoyle state, that is the 0(2)(+) of C-12 is identified as an 'alpha-particle condensate' state. It is conjectured that such states also exist in heavier n alpha-nuclei, like O-16, Ne-20, etc. The sixth 0(+) state in O-16 is proposed as an analogue to the Hoyle state. The Gross-Pitaevski equation is employed to make an estimate of the maximum number of alpha particles a condensate state can contain. Possible quartet condensation in other systems is discussed briefly.

引用

页数：15

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