# QEDMOD: Fortran program for calculating the model Lamb-shift operator

## Description

Abstract We present Fortran package QEDMOD for computing the model QED operator ^(hQED)that can be used to account for the Lamb shift in accurate atomic-structure calculations. The package routines calculate the matrix elements of ^(hQED)with the user-specified one-electron wave functions. The operator can be used to calculate Lamb shift in many-electron atomic systems with a typical accuracy of few percent, either by evaluating the matrix element of ^(hQED)with the many-electron wave functio... Title of program: QEDMOD Catalogue Id: AEVE_v1_0 Nature of problem Fortran code for computation of a model QED operator that approximates the Lamb shift in many-electron atoms. Versions of this program held in the CPC repository in Mendeley Data AEVE_v1_0; QEDMOD; 10.1016/j.cpc.2014.12.002 This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2018)