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arXiv 1109.4904nucl-th
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核子平均自由程的自洽格林函数计算

Self-consistent Green's functions calculation of the nucleon mean-free path

A. Rios, V. Soma

摘要:

格林函数技术的扩展到复杂的能量平面提供了从微观角度充分打扮准粒子的属性。利用自洽的阶梯自能,我们得到了这种准粒子在核物质中的光谱和寿命。在群速度选择一致的情况下,可以计算核子的平均自由程。我们的研究结果表明,在密度接近饱和时,能量超过50 MeV的核子的平均自由程为4 ~ 5飞秒。

英文摘要:

The extension of Green's functions techniques to the complex energy plane provides access to fully dressed quasi-particle properties from a microscopic perspective. Using self-consistent ladder self-energies, we find both spectra and lifetimes of such quasi-particles in nuclear matter. With a consistent choice of the group velocity, the nucleon mean-free path can be computed. Our results indicate that, for energies above 50 MeV at densities close to saturation, a nucleon has a mean-free path of 4 to 5 femtometers.

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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