Publication
Physical Review
Paper

Conditions for rotational invariance of a harmonic lattice

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Abstract

The conditions for rotational invariance of a Born-von Karman lattice model are re-examined. It is found that the Born-Huang conditions for rotational invariance are necessary but not sufficient. Some additional conditions are obtained which, together with the Born-Huang conditions, constitute a set of necessary and sufficient conditions. © 1966 The American Physical Society.

Date

11 Nov 1966

Publication

Physical Review

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