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arXiv 1006.0219nucl-th
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轻核电弱反应

Electroweak reactions with light nuclei

Sonia Bacca

摘要:

用从头算方法研究轻核,可以精确地解决少核子问题,为探索核力提供了一个最佳的环境。核子不仅成对地相互作用,而且通过多体力相互作用。理论上的努力需要采取对识别核可观测敏感的鲜为人知的多核子力。电磁反应可能提供有用的信息。我们介绍了光吸收和电子从轻核散射的结果,强调了三体力的作用以及与实验数据的比较。另一方面,由弱探针引起的反应,如中微子与核子物质的相互作用,与天体物理学有关,可以用少体技术计算。在这种情况下,由于通常没有实验是可能的,从头算预测为天体物理模拟提供了有价值的输入。

英文摘要:

The investigation of light nuclei with ab-initio methods provides an optimal setting to probe our knowledge on nuclear forces, because the few-nucleon problem can be solved accurately. Nucleons interact not only in pairs but also via many-body forces. Theoretical efforts need to be taken towards the identification of nuclear observables sensitive to the less known many-nucleon forces. Electromagnetic reactions can potentially provide useful information on this. We present results on photo-absorption and electron scattering off light nuclei, emphasizing the role of three-body forces and the comparison with experimental data. On the other hand, reactions induced by weak probes, like neutrino interactions with nucleonic matter, are relevant to astrophysics and can be calculated with few-body techniques. In this case, since often no experiment is possible, ab-initio predictions provide valuable input for astrophysical simulations.

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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