Nonlocal nucleon-nucleus optical potentials from chiral effective field theory
ORAL
Abstract
We investigate the nonlocality in microscopic optical potentials derived from chiral effective field
theory. For this purpose we employ the Perey-Buck ansatz, which connects the energy dependence of
purely local optical potentials to a Gaussian spatial nonlocality. We find that the dominant source of
energy dependence in the microscopic real optical potential indeed arises from spatial nonlocalities,
while the energy dependence associated with the microscopic imaginary optical potential is a genuine
time nonlocality. We present results for nonlocal nucleon-nucleus optical potentials for the calcium
isotopic chain and study the dependence of the Woods-Saxon shape parameters on the isotopic
number.
theory. For this purpose we employ the Perey-Buck ansatz, which connects the energy dependence of
purely local optical potentials to a Gaussian spatial nonlocality. We find that the dominant source of
energy dependence in the microscopic real optical potential indeed arises from spatial nonlocalities,
while the energy dependence associated with the microscopic imaginary optical potential is a genuine
time nonlocality. We present results for nonlocal nucleon-nucleus optical potentials for the calcium
isotopic chain and study the dependence of the Woods-Saxon shape parameters on the isotopic
number.
*This work was supported in part by the US Depart-ment of Energy, National Nuclear Security Administra-tion under Awards DE-NA0003841 and DE-NA0004150.Additional support was provided by the National ScienceFoundation under Grant No. PHY2209318. Portions ofthis research were conducted with the advanced comput-ing resources provided by Texas A&M High PerformanceResearch Computing.
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Publication: Preprint: https://arxiv.org/abs/2509.04665
Presenters
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Laina M Stahulak
- Texas A&M University College Station