We use the multiple time scale perturbation method to study the lattice dynamics of an enharmonic crystal. The Heisenberg equations of motion for the creation and annihilation operators are solved, and the frequency shift and the decay constants are found to the second order. We also discuss briefly how to apply our solution to calculate the correlation function.
|Original language||English (US)|
|Number of pages||6|
|Journal||Journal of Mathematical Physics|
|State||Published - 1975|
All Science Journal Classification (ASJC) codes
- Statistical and Nonlinear Physics
- Mathematical Physics