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arXiv 1607.07948hep-phcond-mat.str-el
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核物质中$\bar{D}_{s}$和$\bar{D}_{s}^{\ast}$介子的近藤效应

Kondo effect of $\bar{D}_{s}$ and $\bar{D}_{s}^{\ast}$ mesons in nuclear matter

Shigehiro Yasui, Kazutaka Sudoh

摘要:

研究了$\bar{D}_{s}$和$\bar{D}_{s}^{\ast}$介子作为杂质粒子在核物质中的近藤效应。$\bar{D}_{s}$或$\bar{D}_{s}^{\ast}$介子与核子之间的自旋交换相互作用导致红外区低能散射中有效耦合的增强,其奇异性尺度由近藤尺度给出.本文在核子单圈水平上研究了重整化群方程中的Kondo标度。在平均场近似下,我们进一步研究了基态的近藤效应,指出Kondo标度与核物质中$\bar{D}_{s}$或$\bar{D}_{s}^{\ast}$介子与核子的混合强度有关.给出了杂质在发生近藤效应时的光谱函数。

英文摘要:

We study the Kondo effect for $\bar{D}_{s}$ and $\bar{D}_{s}^{\ast}$ mesons as impurity particles in nuclear matter. The spin-exchange interaction between the $\bar{D}_{s}$ or $\bar{D}_{s}^{\ast}$ meson and the nucleon induces the enhancement of the effective coupling in the low-energy scattering in the infrared region, whose scale of singularity is given by the Kondo scale. We investigate the Kondo scale in the renormalization group equation at nucleon one-loop level. We furthermore study the ground state with the Kondo effect in the mean-field approach, and present that the Kondo scale is related to the mixing strength between the $\bar{D}_{s}$ or $\bar{D}_{s}^{\ast}$ meson and the nucleon in nuclear matter. We show the spectral function of the impurity when the Kondo effect occurs.

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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