Suppression of modes in the random phase approximation

Abstract

A general but simple method is proposed to eliminate the quantum fluctuations generated by selected one-body operators in the excitation spectrum of a discrete RPA Hamiltonian. This method provides an outstanding tool for the removal of the contaminating spurious effects originated from symmetry violations. It can be also applied as a mode filter for analysising RPA response functions.

arXiv comment2 figures, submitted to PRL

References in corpus (6)

• Quasiparticle random phase approximation based on the relativistic Hartree-Bogoliubov model
• On dipole compression modes in nuclei
• Separable RPA for self-consistent nuclear models
• Symmetry breaking and the random-phase approximation in small quantum dots
• Isoscalar dipole strength in ^{208}_{82}Pb_{126}: the spurious mode and the strength in the continuum
• Backbending and $Gamma$-Vibrations

Cited by in corpus (3)

• Nuclear deformation and neutron excess as competing effects for pygmy dipole strength
• QRPA treatment of the transverse wobbling mode reconsidered
• Elimination of spurious modes within QRPA