Linear response strength functions with iterative Arnoldi diagonalization

Details Linear response strength functions with iterative Arnoldi diagonalization Linear response strength functions with iterative Arnoldi diagonalization

2009-12-16

arxiv.org/abs/0912.3234v1

Phys.Rev.C81:034312,2010

Physics

Nuclear Physics

Nuclear Theory

9 RevTeX pages, 11 figures, submitted to Physical Review C

Scientific paper

10.1103/PhysRevC.81.034312

We report on an implementation of a new method to calculate RPA strength functions with iterative non-hermitian Arnoldi diagonalization method, which does not explicitly calculate and store the RPA matrix. We discuss the treatment of spurious modes, numerical stability, and how the method scales as the used model space is enlarged. We perform the particle-hole RPA benchmark calculations for double magic nucleus 132Sn and compare the resulting electromagnetic strength functions against those obtained within the standard RPA.

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