Infrared extrapolations for atomic nuclei
Infrared extrapolations for atomic nuclei
复制标题
原子核的红外外推
DOI：
10.1088/0954-3899/42/3/034032
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
K. Wendt
中科院分区：
文献类型：
--
作者：
R. Furnstahl;G. Hagen;T. Papenbrock;K. Wendt
谐振子模型空间截断会给结合能和其他可观测量的计算带来系统误差。我们确定相关的红外（IR）标度变量，并给出这个核相关的量的值。我们认为氧的同位素计算与耦合簇方法从手性核子核子相互作用在下一个到下一个到领先的顺序，并表明，红外分量的错误是充分理解，允许控制外推。通过采用具有相对较大的频率的振荡器空间，远高于能量最小值，可以抑制紫外校正，而数十MeV以上的IR外推对于基态能量是准确的。然而，尚未开发出充分考虑系统误差的外推量的稳健不确定性量化。
Harmonic oscillator model-space truncations introduce systematic errors to the calculation of binding energies and other observables. We identify the relevant infrared (IR) scaling variable and give values for this nucleus-dependent quantity. We consider isotopes of oxygen computed with the coupled-cluster method from chiral nucleon–nucleon interactions at next-to-next-to-leading order and show that the IR component of the error is sufficiently understood to permit controlled extrapolations. By employing oscillator spaces with relatively large frequencies, well above the energy minimum, the ultraviolet corrections can be suppressed while IR extrapolations over tens of MeVs are accurate for ground-state energies. However, robust uncertainty quantification for extrapolated quantities that fully accounts for systematic errors is not yet developed.
影响因子：
8.6
作者：
H. Hergert;S. Binder;A. Calci;J. Langhammer;R. Roth
通讯作者：
H. Hergert;S. Binder;A. Calci;J. Langhammer;R. Roth