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Updated: Aug 25, 2026

Cooling Rate Dependent Ellipsometry Measurements to Determine the Dynamics of Thin Glassy Films
Published on: January 26, 2016
Euclidean random matrices, the glass transition and the boson peak
1Dipartimento di Fisica, Sezione INFN, SMC and UdRm1 of INFM, Università di Roma La Sapienza, Piazzale Aldo Moro 2, I-00185 Rome, Italy. giorgio.parisi@roma1.infn.it
Abstract:
In this paper I will describe some results that have been recently obtained in the study of random Euclidean matrices, i.e. matrices that are functions of random points in Euclidean space. In the case of translation invariant matrices one generically finds a phase transition between a phonon phase and a saddle phase. If we apply these considerations to the study of the Hessian of the Hamiltonian of the particles of a fluid, we find that this phonon-saddle transition corresponds to 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.
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