On the origine of the Boson peak

Abstract

We show that the phonon-saddle transition in the ensemble of generalized inherent structures (minima and saddles) happens at the same point as the dynamical phase transition in glasses, that has been studied in the framework of the mode coupling approximation. The Boson peak observed in glasses at low temperature is a remanent of this transition.

Proceeding of the Pisa conference September 2002, 13 pages+ 4 figures, To be publiched by Journal of Physics

References in corpus (5)

• Geometric approach to the dynamic glass transition
• Vibrational spectrum of topologically disordered systems
• Role of saddles in mean-field dynamics above the glass transition
• Vibrations in glasses and Euclidean Random Matrix theory
• Anderson Localization in Euclidean Random Matrices

Cited by in corpus (11)

• Some Further Results for the Stationary Points and Dynamics of Supercooled Liquids
• Theory of the Jamming Transition at Finite Temperature
• Boson-peak vibrational modes in glasses feature hybridized phononic and quasilocalized excitations
• Dynamics and Correlations among Soft Excitations in Marginally Stable Glasses
• Complex light: Dynamic phase transitions of a light beam in a nonlinear non-local disordered medium
• Topological properties of the mean field phi^4 model
• The boson peak in the vibrational spectra of glasses
• Thermal origin of quasi-localised excitations in glasses
• On the Dynamics of Glassy Systems
• Revealing the Geometrical and Vibrational Properties of the Defects Driving the Boson Peak
• Yielding and memory in a driven mean-field model of glasses