Dispersion Energy from Local Polarizability Density

Dispersion interactions from a local polarizability model

Citation Vydrov, Oleg A. and Troy Van Voorhis. "Dispersion interactions from a local polarizability model. Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. A local ...

Dispersion relations and the nucleon polarizability.

Recent experimental results on the proton and neutron polarizabilities are examined from the point of view of backward dispersion relations. Results are found to be in reasonable agreement with the measured values. A rigorous relationship between the nucleon and pion polarizabilities is derived and shown to be in excellent agreement with several models. Research supported in part by the Nationa...

Atomic Polarizability by Semi-Local and Non-Local Density- Functional Approximations

The static dipole polarizability of atoms with up to Z 1⁄4 20 electrons has been determined by density functional theory using prototypical local, semi-local and non-local approximations for the exchange-correlation energy. These successive generations of approximations provide very similar results for d; suggesting that their success in predicting atomization energies of condensed systems is m...

Energy anomaly and polarizability of carbon nanotubes.

The energy of Fermi sea perturbed by an external potential is analyzed with the help of an energy anomaly. Using an example of massive Dirac fermions on a circle, we illustrate how the anomaly accounts for the contribution of the deep-lying states. The energy anomaly is a universal function of the applied field and is related to known field-theoretic anomalies. Applied to the transverse polariz...

Local kinetic - energy density of the Airy gas