کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8183782 | 1527110 | 2013 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Î, Σ, and Î hyperons in neutron matter
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک هسته ای و انرژی بالا
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چکیده انگلیسی
Hyperon single-particle potentials are calculated in pure neutron matter in the framework of the lowest-order Brueckner theory, using two recent baryon-baryon interactions, the SU6 quark-model potential and the potential derived from the chiral effective field theory. These properties are important for understanding neutron star matter on the basis of underlying baryon-baryon interactions. Because the calculated potential of Σâ is strongly repulsive and that of Îâ is also repulsive, these hyperons are unlikely to appear in neutron star matter. The Î potential is attractive enough to appear in high neutron matter as has been commonly expected in microscopic calculations. After showing important contributions of three-nucleon forces in neutron matter, analogous repulsive contributions to the Î potential from the Σâ excitation are estimated by evaluating second-order diagrams.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Physics A - Volume 914, 20 September 2013, Pages 427-432
Journal: Nuclear Physics A - Volume 914, 20 September 2013, Pages 427-432
نویسندگان
M. Kohno,