Nucleon-nucleon optical model for energies up to 3 GeV

Abstract

Several nucleon-nucleon potentials, Paris, Nijmegen, Argonne, and those derived by quantum inversion, which describe the NN interaction for T Lab ≤ 300 MeV are extended in their range of application as NN optical models. Extensions are made in r-space using complex separable potentials definable with a wide range of form factor options including those of boundary condition models. We use the latest phase shift analyses SP00 (FA00, WI00) of Arndt et al. from 300 MeV to 3 GeV to determine these extensions. The imaginary parts of the optical model interactions account for loss of flux into direct or resonant production processes. The optical potential approach is of particular value as it permits one to visualize fusion, and subsequent fission, of nucleons when T Lab > 2 GeV. We do so by calculating the scattering wave functions to specify the energy and radial dependences of flux losses and of probability distributions. Furthermore, half-off the energy shell t-matrices are presented as they are readily deduced with this approach. Such t-matrices are required for studies of few-and many-body nuclear reactions.

Role of Initial Entanglement and Non-Gaussianity in the Decoherence of Photon-Number Entangled States Evolving in a Noisy Channel

“…The advantages of considering these states are twofold. They are sufficiently simple for analytical study, and at the same time meaningful since several experimental realizations have been reported [10] and quantum communication schemes involving PNES have been proposed [11]. Furthermore, the set of PNES contains mostly non-Gaussian states but includes (as a subclass) two-mode squeezed vacua, i.e.…”

Nucleon-nucleon interaction: A typical/concise review

“…Among a few imaginary NN potentials, we discussed briefly the Nijmegen ones in subsection of (4.15.7). In [167], some NN potentials such as Paris, Nijmegen and Argonne potentials, and those traced by quantum inversion, which describe NN interaction for the energies below 300 MeV, are extended to NN optical potentials in r-space. The up-to-date phase-shift analyses, from 300 MeV to 3 GeV, are used to settle the extensions.…”

Recent Results from Nuclear Lattice Simulations

“…15). In order to calculate the phase shifts, we will solve the lattice Schrödinger equation for the two-neutron system and observe the asymptotic form of the scattering wavefunctions.…”