6533b82efe1ef96bd1292a68

RESEARCH PRODUCT

Linear response strength functions with iterative Arnoldi diagonalization

P. VeselýJ. ToivanenJacek DobaczewskiJacek DobaczewskiP. ToivanenB. G. CarlssonKazuhito MizuyamaR. R. Rodríguez-guzmán

subject

PhysicsNuclear and High Energy PhysicsNuclear TheoryIterative methodNuclear TheoryFOS: Physical sciencesCalculation methodsNuclear Theory (nucl-th)Quantum mechanicsIsotopes of tinPhysics::Atomic and Molecular ClustersApplied mathematicsSpurious relationshipRandom phase approximationNuclear theoryNumerical stability

description

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.

yearjournalcountryeditionlanguage
2009-12-16
10.1103/physrevc.81.034312http://arxiv.org/abs/0912.3234