Depletion of low-energy states relative to the Gaussian PEL regime governs the low-T curvature of configurational entropy and produces a gradual FSC in diffusivity that follows the mean inherent structure energy, consistent with a trap model.
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The boson peak arises from accumulation of vibrational spectral weight in a narrow frequency window that is only weakly dependent on wavevector, manifesting as a flat band in the dynamical structure factor rather than a propagating excitation.
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Starting from the amorphous ground state: linking landscape thermodynamics to slow dynamics and crossover
Depletion of low-energy states relative to the Gaussian PEL regime governs the low-T curvature of configurational entropy and produces a gradual FSC in diffusivity that follows the mean inherent structure energy, consistent with a trap model.
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A flat-band perspective on the boson peak in amorphous solids
The boson peak arises from accumulation of vibrational spectral weight in a narrow frequency window that is only weakly dependent on wavevector, manifesting as a flat band in the dynamical structure factor rather than a propagating excitation.