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arXiv physics/9803030math-phhep-phmath.MP
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改进的Lee,Oehme和Yang近似

Improved Lee, Oehme and Yang approximation

K. Urbanowski, J. Piskorski

摘要:

本文讨论了完整系统态的两态子空间中的Lee,Oehme和Yang(LOY)时间演化理论。本文发现在标准推导控制时间演化的LOY有效哈密顿量H(LOY)时所用的假设和近似中存在一些不一致之处,消除这些不一致,并利用LOY方法,导出了控制时间演化的有效哈密顿量H(eff)在该子空间中的近似公式(改进了LOY方法所得的公式)。与标准LOY结果不同的是,在中性K介子(<K(0)|H(eff)|K(0)> - <K(0)-bar| H(eff)|K(0)-bar>),如果整个系统保持CPT对称性,则不能取零值。在上述方法的应用范围内,还找到了作用于三态(三维)态子空间的H(eff)公式。

英文摘要:

The Lee, Oehme and Yang (LOY) theory of time evolution in two state subspace of states of the complete system is discussed. Some inconsistencies in assumptions and approximations used in the standard derivation of the LOY effective Hamiltonian, H(LOY), governig this time evolution are found. Eliminating these inconsistecies and using the LOY method, approximate formulae for the effective Hamiltonian, H(eff), governing the time evolution in this subspace (improving those obtained by LOY) are derived. It is found, in contradistinction to the standard LOY result, that in the case of neutral kaons (<K(0)|H(eff)|K(0)> - <K(0)-bar|H(eff)|K(0)-bar>), cannot take the zero value if the total system the preserves CPT--symmetry. Within the use of the method mentioned above formulae for H(eff) acting in the three state (three dimensional) subspace of states are also found.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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