Different effect of the hyperons $\Lambda$ and $\Xi$ on the nuclear core |
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Authors: | Email author" target="_blank">Yu-Hong?TanEmail author Ping-Zhi?Ning |
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Institution: | (1) Theoretical Physics Division, Nankai Institute of Mathematics, Nankai University, 300071 Tianjin, PRC;(2) Department of Physics, Nankai University, 300071 Tianjin, PRC |
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Abstract: | We demonstrate the different effect of strange impurities (
and
) on the static properties of nuclei within the framework of the relativistic mean-field model. Systematic calculations show that the glue-like role of the
-hyperon is universal for all
-hypernuclei considered. However, the
-hyperon has a glue-like role only for the protons distribution in nuclei, while for the neutrons distribution it plays a repulsive role. On the other hand, the
-hyperon attracts the surrounding neutrons and reveals a repulsive force to the protons. Possible explanations of the above observation are discussed.Received: 10 March 2003, Revised: 6 November 2003, Published online: 5 May 2004PACS:
21.80. + a Hypernuclei - 24.10.Cn Many-body theory |
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Keywords: | |
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