Exact4Hespectral function in a semirealisticNNpotential model

1998/05/02 by V. D. Efros, V.D. Efros, Winfried Leidemann +3 · 4 citations
Physics and Astronomy · #Atomic and Molecular Physics #Nuclear physics research studies #Quantum, superfluid, helium dynamics #nucl-th

paper · pdf · doi:10.1103/physrevc.58.582

published as Phys.Rev.C58:582-585,1998 · 7 pages, Latex (Revtex), 4 Postscript figures, to appear in Phys. Rev. C

arxiv created 1998/05/02 · openalex publication_date 1998/07/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

The spectral function of ⁴He is calculated with the Lorentz integral transform method in a large energy and momentum range. The excitation spectrum of the residual 3N system is fully taken into account. The obtained spectral function is used to calculate the quasielastic longitudinal (e,e^\ensuremath') response R_L of ⁴He for q=300, 400, and 500 MeV/c. Comparison with the exact R_L shows a rather sizable disagreement except in the quasielastic peak, where the differences reduce to about 10% at q=500 MeV/c. It is shown as well that very simple momentum distribution approximations for the spectral function provide almost the same results for R_L as the exact spectral function.

Cited by

• Inclusive electron scattering offHe<mml:mprescripts/><mml:none/>4
• The Lorentz integral transform (LIT) method and its applications to perturbation-induced reactions
• Calculation of exclusive cross sections with the Lorentz integral transform method
• Solving three-body scattering problems in the momentum lattice representation