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Variational functional for transition amplitudes: Improving the time-dependent Hartree-Fock method

Journal Article · · Phys. Rev. A; (United States)
A variational expression is introduced for transition amplitudes, that is invariant under time reversal and is independent of the phases of trial states. With the use of time-dependent Hartree-Fock (TDHF) wave functions and a linear combination of atomic orbitals, exact numerical results for He+He/sup 2 +/..-->..He/sup +/+He/sup +/ obtained within a small basis set, are compared with results from the variational functional. The variational procedure leads to a very substantial improvement over the standard TDHF results.
Research Organization:
Departments of Chemistry and of Physics, University of Florida, Gainesville, Florida 32611
OSTI ID:
5572476
Journal Information:
Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 33:6; ISSN PLRAA
Country of Publication:
United States
Language:
English