Comparing different density-matrix expansions for long-range pion exchange
Comparing different density-matrix expansions for long-range pion exchange
复制标题
比较长程π介子交换的不同密度矩阵展开式
DOI:
10.1103/physrevc.103.014325
复制
发表时间:
2021
影响因子:
3.1
通讯作者:
Schwenk, A.
中科院分区:
文献类型:
--
作者:
Zurek, L.;Coello Pérez, E. A.;Bogner, S. K.;Furnstahl, R. J.;Schwenk, A.
Empirical energy density functionals (EDFs) are generally successful in describing nuclear properties across the table of nuclides. But their limitations motivate using the density-matrix expansion (DME) to embed long-range pion interactions into a Skyrme functional. Recent results on the impact of the pion were both encouraging and puzzling, necessitating a careful re-examination of the DME implementation. Here we take the first steps, focusing on two-body scalar terms in the DME. Exchange energies with long-range one-pion contributions are well approximated by all DME implementations considered, with preference for variants that do not truncate at two derivatives in every EDF term. The use of the DME for chiral pion contributions is therefore supported by this investigation. For scalar-isovector energies it is important to treat neutrons and protons separately. The results are found to apply under broad conditions, although self-consistency is not yet tested.
登录
查看更多内容
影响因子:
8.6
作者:
D. Martin;A. Arcones;W. Nazarewicz;E. Olsen
通讯作者:
D. Martin;A. Arcones;W. Nazarewicz;E. Olsen
DOI:
--
发表时间:
2001
期刊:
影响因子:
--
作者:
Sergey N. Maximoff;G. Scuseria
通讯作者:
G. Scuseria
DOI:
--
发表时间:
1987
期刊:
Physical review. A, General physics
影响因子:
--
作者:
Lee;Parr
通讯作者:
Parr
DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
M. Kortelainen;J. Dobaczewski;K. Mizuyama;J. Toivanen
通讯作者:
J. Toivanen
DOI:
--
发表时间:
1986
期刊:
影响因子:
--
作者:
Jacques Meyer;J. Bartel;M. Brack;P. Quentin;S. Aicher
通讯作者:
S. Aicher