Publications (15)
Nucleon-nucleon potentials in phase-space representation
H. Feldmeier, T. Neff, D. Weber
A phase-space representation of nuclear interactions, which depends on the distance and relative momentum of the nucleons, is presented. A method is developed t…
High-temperature Tl decay clarifies Pb dating in early Solar System
G. Leckenby, R. S. Sidhu, R. J. Chen +56
Radioactive nuclei with lifetimes on the order of millions of years can reveal the formation history of the Sun and active nucleosynthesis occurring at the time and place of its bi…
Fermionic Molecular Dynamics and short range correlations
H. Feldmeier, T. Neff, R. Roth +1
Fermionic Molecular Dynamics (FMD) models a system of fermions by means of many-body states which are composed of antisymmetrized products of single-particle states. These consist…
Pair decay width of the Hoyle state and carbon production in stars
M. Chernykh, H. Feldmeier, T. Neff +2
Electron scattering off the first excited 0+ state in 12C (the Hoyle state) has been performed at low momentum transfers at the S-DALINAC. The new data together with a novel model-…
A unitary correlation operator method
H. Feldmeier, T. Neff, R. Roth +1
The short range repulsion between nucleons is treated by a unitary correlation operator which shifts the nucleons away from each other whenever their uncorrelated positions are wit…
Realistic Interactions and Configuration Mixing in Fermionic Molecular Dynamics
T. Neff, H. Feldmeier, R. Roth +1
In Fermionic Molecular Dynamics the occurrence of multifragmentation depends strongly on the intrinsic structure of the many-body state. Slater determinants with narrow single-part…
Dynamical phase diagram of Gaussian BEC wave packets in optical lattices
H. Hennig, T. Neff, R. Fleischmann
We study the dynamics of self-trapping in Bose-Einstein condensates (BECs) loaded in deep optical lattices with Gaussian initial conditions, when the dynamics is well described by…
Bound-State Beta Decay of Ions and the LOREX Project
R. S. Sidhu, G. Leckenby, R. J. Chen +55
Stable Tl ions have the lowest known energy threshold for capturing electron neutrinos () of \,keV. The Lorandite Experiment (LOREX), proposed in…
From nucleon-nucleon interaction matrix elements in momentum space to an operator representation
D. Weber, H. Feldmeier, H. Hergert +1
Starting from the matrix elements of the nucleon-nucleon interaction in momentum space we present a method to derive an operator representation with a minimal set of operators that…
Matrix Elements and Few-Body Calculations within the Unitary Correlation Operator Method
R. Roth, H. Hergert, P. Papakonstantinou +2
We employ the Unitary Correlation Operator Method (UCOM) to construct correlated, low-momentum matrix elements of realistic nucleon-nucleon interactions. The dominant short-range c…
Universality of short-range nucleon-nucleon correlations
H. Feldmeier, W. Horiuchi, T. Neff +1
Short-range correlations between nucleon pairs in different spin-isospin channels are investigated for light nuclei using the Argonne V8' interaction. At distances below 1 fm a uni…
Cluster structures within Fermionic Molecular Dynamics
T. Neff, H. Feldmeier
The many-body states in an extended Fermionic Molecular Dynamics approach are flexible enough to allow the description of nuclei with shell model nature as well as nuclei with clus…
Nuclear Structure based on Correlated Realistic Nucleon-Nucleon Potentials
R. Roth, T. Neff, H. Hergert +1
We present a novel scheme for nuclear structure calculations based on realistic nucleon-nucleon potentials. The essential ingredient is the explicit treatment of the dominant inter…
Determination of the Neutron-Capture Rate of 17C for the R-process Nucleosynthesis
M. Heine, S. Typel, M. -R. Wu +124
With the RB-LAND setup at GSI we have measured exclusive relative-energy spectra of the Coulomb dissociation of C at a projectile energy around 425~AMeV on a lead targ…
Hartree-Fock and Many-Body Perturbation Theory with Correlated Realistic NN-Interactions
R. Roth, P. Papakonstantinou, N. Paar +3
We employ correlated realistic nucleon-nucleon interactions for the description of nuclear ground states throughout the nuclear chart within the Hartree-Fock approximation. The cru…