0 The Coulomb Phase Revisited

2 v 3 4 N ov 2 00 0 The Coulomb Phase Revisited

Motivated by the forthcoming data from the E950 experiment at BNL for small angle polarized proton-carbon scattering we revisit the problem of Coulomb phase. The approximation usually used, with the momentum transfer squared (q 2) small compared to the inverse elastic slope, is not justified within the kinematics of the E950 experiment. We go beyond this approximation and derive a new rather si...

Effects of self-consistency violation in Hartree-Fock RPA calculations for nuclear giant resonances revisited

We provide accurate assessments of the consequences of violations of self-consistency in HartreeFock (HF) based random phase approximation (RPA) calculations of the centroid energy Ecen of isoscalar and isovector giant resonances of multi-polarities L = 0 − 3 in a wide range of nuclei. This is done by carrying out highly accurate HF-RPA calculations neglecting the particle-hole (ph) spin-orbit ...

Coulomb Energy Differences in Mirror Nuclei Revisited

Investigation of electron correlation effects in armchair silicene nanoribbons

In this study, the electronic structure of armchair silicene nanoribbons (ASiNRs) is investigated for various widths using first-principle calculations and the framework of the density functional theory. Electronic structure of ASiNRs shows a direct band gap which is decreased  with increasing the nanoribbon's width, showing an oscillatory behavior. The effective Coulomb interaction between loca...

Infrared divergence of the color-Coulomb self-energy in Coulomb gauge QCD

We investigate the spectrum of the Faddeev-Popov operator in Coulomb gauge QCD using quenched SU(3) lattice simulation. In the confinement phase, we observe the accumulation of the near-zero modes of the FP operator at large lattice volumes, and the color-Coulomb self-energy diverges in the infrared limit. Moreover, even in the deconfinement phase, the behavior of the FP eigenvalue density is q...