5 papers
How to derive and compute 1,648 diagrams
Caleb C. Cannon, Andrei Derevianko
We present the first calculation for many-electron atoms complete through fourth order of many-body perturbation theory. Owing to an overwhelmingly large number of underlying diagr…
Fourth-order perturbative extension of the single-double excitation coupled-cluster method, Part II: Angular reduction
Andrei Derevianko
We tabulate angularly reduced fourth-order many-body corrections to matrix elements for univalent atoms, derived in [A. Derevianko and E.D. Emmons, Phys. Rev. A 65, 052115 (2002)].…
High-precision calculations of van der Waals coefficients for heteronuclear alkali-metal dimers
A. Derevianko, J. F. Babb, A. Dalgarno
Van der Waals coefficients for the heteronuclear alkali-metal dimers of Li, Na, K, Rb, Cs, and Fr are calculated using relativistic ab initio methods augmented by high-precision ex…
Role of negative-energy states and Breit interaction in calculation of atomic parity-nonconserving amplitudes
A. Derevianko
It is demonstrated that Breit and negative-energy state contributions reduce the 2.5 sigma deviation [S.C. Bennett and C.E. Wieman, Phys. Rev. Lett. 82, 2484 (1999)] in the value o…
High-precision calculations of dispersion coefficients, static dipole polarizabilities, and atom-wall interaction constants for alkali-metal atoms
A. Derevianko, W. R. Johnson, M. S. Safronova +1
The van der Waals coefficients for the alkali-metal atoms from Na to Fr interacting in their ground states, are calculated using relativistic ab initio methods. The accuracy of the…