Pairing and Short-Range Correlations in Nuclear Systems

Pairing and Short-Range Correlations in Nuclear Systems
复制标题

核系统中的配对和短程相关性

DOI:
10.1007/s10909-017-1818-7
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发表时间:
2017
影响因子:
2
通讯作者:
W. H. Dickhoff
W. H. Dickhoff
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
A. Rios;A. Polls;W. H. Dickhoff

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无限物质中配对间隙的结构和密度依赖性与天体物理现象相关,并为讨论核结构中的配对特性提供了起点。短程关联可以显着耗尽费米表面周围的可用单粒子强度,从而提供配对间隙的减少机制。在这里,我们研究中子物质和对称核物质的单线态和三线态通道中的这种效应。我们的计算使用相移等效相互作用和手性二体和三体相互作用作为起点。我们发现所有通道中的能隙都明显减小,并且对单重态中子物质和三重态核物质通道中的神经网络力的依赖性非常小。在后一个通道中,仅 SRC 即可将配对间隙减少 50%。
The structure and density dependence of the pairing gap in infinite matter is relevant for astrophysical phenomena and provides a starting point for the discussion of pairing properties in nuclear structure. Short-range correlations can significantly deplete the available single-particle strength around the Fermi surface and thus provide a reduction mechanism of the pairing gap. Here, we study this effect in the singlet and triplet channels of both neutron matter and symmetric nuclear matter. Our calculations use phase-shift equivalent interactions and chiral two-body and three-body interactions as a starting point. We find an unambiguous reduction of the gap in all channels with very small dependence on the NN force in the singlet neutron matter and the triplet nuclear matter channel. In the latter channel, SRC alone provide a 50% reduction of the pairing gap.
DOI: 10.1103/physrevc.88.054326
发表时间: 2013-11-27
期刊: PHYSICAL REVIEW C
影响因子: 3.1
作者:
Carbone, Arianna;Cipollone, Andrea;Polls, Artur
通讯作者: Polls, Artur
DOI: 10.1103/physrevlett.115.122301
发表时间: 2015-09-17
影响因子: 8.6
作者:
Epelbaum, E.;Krebs, H.;Meissner, U. -G.
通讯作者: Meissner, U. -G.