Electron scattering on ${}^4$He from coupled-cluster theory

Abstract

We present a coupled-cluster calculation for the electron-${}^4$He scattering in the region of the quasi-elastic peak. We show the longitudinal and transverse responses separately, and discuss results within two distinct theoretical methods: the Lorentz integral transform and spectral functions. The comparison between them allows to investigate the role of final state interactions, two-body currents and relativistic effects.

Comments: 10 pages, 2 figures