Research output: Contribution to journal › Article
CI-MBPT: A package of programs for relativistic atomic calculations based on a method combining configuration interaction and many-body perturbation theory. / Kozlov, M.G.; Porsev, S.G.; Safronova, M.S.; Tupitsyn, I.I.
In: Computer Physics Communications, Vol. 195, 2015, p. 199-213.Research output: Contribution to journal › Article
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TY - JOUR
T1 - CI-MBPT: A package of programs for relativistic atomic calculations based on a method combining configuration interaction and many-body perturbation theory
AU - Kozlov, M.G.
AU - Porsev, S.G.
AU - Safronova, M.S.
AU - Tupitsyn, I.I.
PY - 2015
Y1 - 2015
N2 - This package of programs allows us to carry out relativistic calculations for many-electron atoms and ions. One can find energy levels and a number of atomic properties: g-factors, magnetic-dipole and electric- quadrupole hyperfine structure constants, electric- and magnetic-multipole transition amplitudes, and matrix elements of the parity nonconserving interactions. Method of calculation is based on a combination of conventional configuration interaction (CI) method and many-body perturbation theory (MBPT). The former explicitly accounts for the interaction between valence electrons, while the latter includes core–core and core–valence correlations. These two methods are combined to acquire benefits from both approaches and attain better accuracy.
AB - This package of programs allows us to carry out relativistic calculations for many-electron atoms and ions. One can find energy levels and a number of atomic properties: g-factors, magnetic-dipole and electric- quadrupole hyperfine structure constants, electric- and magnetic-multipole transition amplitudes, and matrix elements of the parity nonconserving interactions. Method of calculation is based on a combination of conventional configuration interaction (CI) method and many-body perturbation theory (MBPT). The former explicitly accounts for the interaction between valence electrons, while the latter includes core–core and core–valence correlations. These two methods are combined to acquire benefits from both approaches and attain better accuracy.
KW - core and valence atomic orbitals
KW - configuration interaction
KW - perturbation theory
U2 - 10.1016/j.cpc.2015.05.007
DO - 10.1016/j.cpc.2015.05.007
M3 - Article
VL - 195
SP - 199
EP - 213
JO - Computer Physics Communications
JF - Computer Physics Communications
SN - 0010-4655
ER -
ID: 3978908