108 citations · 126 across the 2 of their papers we have counts for
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Quasiparticle Random Phase Approximation with Interactions from the Similarity Renormalization Group
H. Hergert, P. Papakonstantinou, R. Roth
We have developed a fully consistent framework for calculations in the Quasiparticle Random Phase Approximation (QRPA) with interactions from the Similarity Renormalization Gr…
Isoscalar dipole coherence at low energies and forbidden E1 strength
P. Papakonstantinou, V. Yu. Ponomarev, R. Roth +1
In 16O and 40Ca an isoscalar, low-energy dipole transition (IS-LED) exhausting approximately 4% of the isoscalar dipole (ISD) energy-weighted sum rule is experimentally known, but…
Reduction of the RPA eigenvalue problem and a generalized Cholesky decomposition for real-symmetric matrices
P. Papakonstantinou
The particular symmetry of the random-phase-approximation (RPA) matrix has been utilized in the past to reduce the RPA eigenvalue problem into a symmetric-matrix problem of half th…
Nuclear collective excitations using correlated realistic interactions: the role of explicit RPA correlations
P. Papakonstantinou, R. Roth, N. Paar
We examine to which extent correlated realistic nucleon-nucleon interactions, derived within the Unitary Correlation Operator Method (UCOM), can describe nuclear collective motion…
Nuclear Structure in the UCOM Framework: From Realistic Interactions to Collective Excitations
R. Roth, H. Hergert, N. Paar +1
The Unitary Correlation Operator Method (UCOM) provides a means for nuclear structure calculations starting from realistic NN potentials. The dominant short-range central and tenso…
Collective multipole excitations based on correlated realistic nucleon-nucleon interactions
N. Paar, P. Papakonstantinou, H. Hergert +1
We investigate collective multipole excitations for closed shell nuclei from 16O to 208Pb using correlated realistic nucleon -nucleon interactions in the framework of the random ph…