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arXiv 1407.0911nucl-thastro-ph.SRnucl-ex
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信息与统计:理论核物理的新范式

Information and statistics: a new paradigm in theoretical nuclear physics

J. Piekarewicz, Wei-Chia Chen, F. J. Fattoyev

摘要:

物理观测的理论预测通常涉及到那些不受实验室实验和天体物理观测约束的区域。如果没有适当量化的理论误差,这种模型预测的实用性非常有限。在这方面的贡献,我们使用最大似然估计来计算理论误差和评估物理观测之间的相关性。我们说明了这些方法的力量和优雅的教学和现实利益的例子。特别是,我们实现了高斯近似的似然函数开发一个新的相对论有效相互作用的有限核,其响应和质量的中子星的基态性质的约束。

英文摘要:

Theoretical predictions of physical observables often involve extrapolations to regions that are poorly constrained by laboratory experiments and astrophysical observations. Without properly quantified theoretical errors, such model predictions are of very limited utility. In this contribution we use maximum-likelihood estimation to compute theoretical errors and assess correlations between physical observables. We illustrate the power and elegance of these methods using examples of both pedagogical and realistic interest. In particular, we implement a gaussian approximation to the likelihood function to develop a new relativistic effective interaction constrained by ground-state properties of finite nuclei, their monopole response, and masses of neutron stars.

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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