Dynamical Mean-Field Theory for Quantum Chemistry

Details Dynamical Mean-Field Theory for Quantum Chemistry Dynamical Mean-Field Theory for Quantum Chemistry

2010-10-15

arxiv.org/abs/1010.3180v2

Phys. Rev. Lett. 106, 096402 (2011)

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.106.096402

The dynamical mean-field concept of approximating an unsolvable many-body problem in terms of the solution of an auxiliary quantum impurity problem, introduced to study bulk materials with a continuous energy spectrum, is here extended to molecules, i.e., finite systems with a discrete energy spectrum. The application to small clusters of hydrogen atoms yields ground state energies which are competitive with leading quantum chemical approaches at intermediate and large interatomic distances as well as good approximations to the excitation spectrum.

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