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arXiv 0906.3134nucl-th
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介子质量对中子星通过NN韧致辐射过程的轴子辐射的影响

Pion mass effects on axion emission from neutron stars through NN bremsstrahlung processes

S. Stoica, B. Pastrav, J. E. Horvath, M. P. Allen

摘要:

本文计算了核子-核子韧致辐射的轴子发射率,其中包含了核一π介子交换势的全部动量贡献。给出了中子-中子(nn)、质子-质子(pp)和中子-质子(np)过程在非简并极限和简并极限下的贡献。我们发现,有限的动量修正的发射率是定量的显着的非简并制度和温度依赖性,并应影响现有的轴子质量边界。这些核效应的趋势是使发射率减小。

英文摘要:

The rates of axion emission by nucleon-nucleon bremsstrahlung are calculated with the inclusion of the full momentum contribution from a nuclear one pion exchange (OPE) potential. The contributions of the neutron-neutron (nn), proton-proton (pp) and neutron-proton (np) processes in both the nondegenerate and degenerate limits are explicitly given. We find that the finite momentum corrections to the emissivities are quantitatively significant for the non-degenerate regime and temperature-dependent, and should affect the existing axion mass bounds. The trend of these nuclear effects is to diminish the emissivities.

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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