An Alternative Scheme for Pionless EFT: Neutron-Deuteron Scattering in the Doublet S-Wave

被引：2
作者：
Ebert, M. [1 ]
Hammer, H. -W. [1 ,2 ]
Rusetsky, A. [3 ,4 ]
机构：
[1] Tech Univ Darmstadt, Dept Phys, D-64289 Darmstadt, Germany
[2] ExtreMe Matter Inst EMMI & Helmholtz Forschungsaka, D-64291 Darmstadt, Germany
[3] Rhein Friedrich Wilhelms Univ Bonn, HISKP & BCTP, D-53115 Bonn, Germany
[4] Tbilisi State Univ, Tbilisi 0186, Georgia
来源：
FEW-BODY SYSTEMS | 2023年 / 64卷 / 04期
关键词：
EFFECTIVE-FIELD THEORY; RANGE CORRECTIONS; 3-BOSON SYSTEM; EXPANSION;
D O I：
10.1007/s00601-023-01867-0
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Using the effective-range expansion for the two-body amplitudes may generate spurious sub-threshold poles outside of the convergence range of the expansion. In the infinite volume, the emergence of such poles leads to the breakdown of unitarity in the three-body amplitude. We discuss the extension of our alternative subtraction scheme for including effective range corrections in pionless effective field theory for spinless bosons to nucleons. In particular, we consider the neutron-deuteron system in the doublet S-wave channel explicitly.
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页数：7
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