| 核物质中π分子引起的粒子－空穴和△－空穴激发 |
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| 引用本文： | 刘良钢,马维兴,姜焕清.核物质中π分子引起的粒子－空穴和△－空穴激发[J].中国物理 C,1994(11). |
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| 作者姓名： | 刘良钢 马维兴 姜焕清 |
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| 作者单位： | 中山大学物理系，中国科学院高能物理研究所 |
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| 摘 要： | 以π介子为例给出了正确计算核物质中粒子－空穴激发的相对论方法，指出了它与通常计算方法的区别及通常计算方法中所作近似的不合理性．并与非相对论的粒子－空穴激发的色散关系进行了比较．我们还用这一方法计算并给出了△－空穴激发的表达式．
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| 关 键 词： | 核物质 π介子传播子 粒子－空穴激发 △－空穴激发 相对论Lindhard函数 π介子色散关系 |
The Particle-Hole and Delta-Hole Excitations in Nuclear Matter |
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| Liu Lianggang.The Particle-Hole and Delta-Hole Excitations in Nuclear Matter[J].High Energy Physics and Nuclear Physics,1994(11). |
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| Authors: | Liu Lianggang |
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| Abstract: | A new method for the relativistic calculations of particle hole and delta-hole excitations of pious in nuclear matter is given.We point out the difference between the usual methods and ours.The dispersion relation of the pion meson including virtual particle-hole excitation is calculated and compared numerically with that of the non-relativistic case.The formulae of relativistic delta-hole excitation of pious in nuclear matter are also given. |
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