Prefer a chat interface with context about you and your work?
Harmonic Vibrational Excitations in Disordered Solids and the “Boson Peak”
We consider a system of coupled classical harmonic oscillators with spatially fluctuating nearest-neighbor force constants on a simple cubic lattice. The model is solved both by numerically diagonalizing the Hamiltonian and by applying the single-bond coherent potential approximation. The results for the density of states $g(\omega)$ are in excellent agreement …