# Shell model

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The **shell model** is a method for treating polarisable ions ^{[1]}.

## Relaxed shell model[edit]

In the relaxed shell model the shell has zero mass.

## Dynamical shell model[edit]

The dynamical shell model is also known as the adiabatic shell model.
^{[2]}
^{[3]}

## Breathing shell model[edit]

^{[4]}

## References[edit]

- ↑ G. Jacucci, I. R. McDonald and K. Singer "Introduction of the shell model of ionic polarizability into molecular dynamics calculations", Physics Letters A
**50**pp. 141-143 (1974) - ↑ P J D Lindan and M J Gillan "Shell-model molecular dynamics simulation of superionic conduction in CaF2", Journal of Physics Condensed Matter
**5**pp. 1019-1030 (1993) - ↑ P J Mitchell and D Fincham "Shell model simulations by adiabatic dynamics", Journal of Physics Condensed Matter
**5**pp. 1031-1038 (1993) - ↑ U. Schröder "A new model for lattice dynamics ('breathing shell model')", Solid State Communications
**4**pp. 347-349 (1966)