PAIRING INSTABILITY IN HOT ASYMMETRIC NUCLEAR-MATTER

被引:89
作者
ALM, T
FRIMAN, BL
ROPKE, G
SCHULZ, H
机构
[1] MICHIGAN STATE UNIV,DEPT PHYS & ASTRON,E LANSING,MI 48824
[2] GESELL SCHWERIONENFORSCH GMBH,W-6100 DARMSTADT 11,GERMANY
[3] TH DARMSTADT,INST KERNPHYS,W-6100 DARMSTADT,GERMANY
[4] MICHIGAN STATE UNIV,NATL SUPERCOND CYCLOTRON LAB,E LANSING,MI 48824
关键词
D O I
10.1016/0375-9474(93)90302-E
中图分类号
O57 [原子核物理学、高能物理学];
学科分类号
070202 ;
摘要
The occurrence of a pairing instability in hot asymmetric nuclear matter is studied within a t-matrix approach. The thermodynamic t-matrix is solved in the ladder approximation using a realistic nucleon-nucleon potential. By studying the analytic structure of the t-matrix we determine the critical temperature for pairing. We explore pairing in the S-1(0) channel as well as the S-3(1)-3D1 channel. In the latter we find a maximum critical temperature of 6-8 MeV at about half nuclear matter density in isospin-symmetric matter. The pairing correlations in the triplet channel are considerably suppressed in isospin-asymmetric nuclear matter.
引用
收藏
页码:45 / 53
页数:9
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