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8 papers · 2 filters
Comment on "Phase-Shift Analysis of NN Scattering Below 160 Mev: Indication of a Strong Tensor Force"
G. E. Brown, R. Machleidt
In his recent publication of a NN phase shift analysis below 160 MeV, Henneck reports relatively large values for the mixing parameter . Based on these results, Henneck sugges…
Projected Linear Response Theory for Charge-Exchange Excitations and Double Beta Decay
F. Krmpotić, A. Mariano, T. T. S. Kuo +1
The projected random phase approximation (PRPA) for charge-exchange excitations is derived from the time-dependent variational principle. Explicit results for the unperturbed energ…
Approximate Treatment of Hermitian Effective Interactions and a Bound on the Error
R. Okamoto, K. Suzuki, P. J. Ellis +3
The Hermitian effective interaction can be well-approximated by (R+R^dagger)/2 if the eigenvalues of omega^dagger omega are small or state-independent(degenerate), where R is the s…
Finite Temperature Many-Body Theory with the Lipkin Model
S. Y. Tsay Tzeng, P. J. Ellis, T. T. S. Kuo +1
We have compared exact numerical results for the Lipkin model at finite temperature with Hartree-Fock theory and with the results of including in addition the ring diagrams. In the…
Neutron Stars and Nuclei in the Modified Relativistic Hartree Approximation
M. Prakash, P. J. Ellis, E. K. Heide +1
We have examined the properties of neutron-rich matter and finite nuclei in the modified relativistic Hartree approximation for several values of the renormalization scale, , ar…
Iterative Solution for Effective Interactions in a System with Non-degenerate Unperturbed Energies
K. Suzuki, R. Okamoto, P. J. Ellis +1
We generalize the Lee-Suzuki iteration method for summing the folded diagram series to the case where the unperturbed model-space energies are non-degenerate. A condition is derive…