期刊信息

  • 刊名: 河北师范大学学报(自然科学版)Journal of Hebei Normal University (Natural Science)
  • 主办: 河北师范大学
  • ISSN: 1000-5854
  • CN: 13-1061/N
  • 中国科技核心期刊
  • 中国期刊方阵入选期刊
  • 中国高校优秀科技期刊
  • 华北优秀期刊
  • 河北省优秀科技期刊

Skyrme模型中的多重子描述

  • 1. 河北科技大学理学院, 河北, 石家庄, 050054;
    2. 河北广播电视大学, 理工部, 河北, 石家庄, 050071
  • DOI:

Description of Multibaryons and the Skyrme Model

摘要/Abstract

摘要:

在束缚态近似到SU(3)Skyrme模型的范围内,讨论低能多重子组态。用近似拟设表示以有理映射为基础的静态背景场,这样的映射有精确解的同样的对称性。利用这些对称性来确定集体Hamilton量和波函数的明确形式,得到的展开式在精确的情况下同样有效。用介子结合,惯性参数,以及超精细分裂常数所做的计算与拟设的具体形式有关,所以它们是近似的,用这些值计算了B≤9和奇异性0及-B的低能谱。用这些结果讨论了几个多⊥组态。

Abstract:

Within the bound state approach to the SU(3) Skyrme model we discuss low-lying multibaryon configurations.Approxima te ansatze are used for the static background fields based on rational maps which have the same symmetries of the exact so lutions,and lead to a great simplification in the treatment of the kaon-soliton system.The same symmetries as the exact ones is an important property of these approximate configurations.Making use of only these symmetries we can determine the explicite form of the collective Hamil to nians and wave functions.Thus,the expressions obtained are also valid in the exact case.On the other hand,the meson binding s,iner tia parameters and hy perfine splitting constants we culculate do depend on the detailed form of the ansatze and are therefore approximate.Using these values we discuss the spectra of non-strange and strange multibaryons and compute the low-lying spectra of multibaryons withB≤9 and strangeness 0 and-B.With these results the stability of some multilambda configura tions is discussed.