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Harmonic Theory of Crystal Dynamics by Bilal Barut is a document available to read on EtoBox.
What is Harmonic Theory of Crystal Dynamics about?
1) The document discusses the classical theory of harmonic crystals, which approximates the motion of ions about their equilibrium lattice positions as small oscillations. 2) It introduces the harmonic approximation, which assumes the ion displacements are small and expands the potential energy in a Taylor series, retaining only the quadratic term. This leads to a harmonic Hamiltonian involving the ion displacements and momenta. 3) It can be shown that the normal modes of vibration of the crystal corresp
- Author
- Bilal Barut
- Language
- EN