Stiff-Glass Approximation of Mode-Coupling Theory
arXiv:cond-mat/0110461 · doi:10.1016/S0022-3093(02)01458-8
Abstract
The stiff-glass approximation of the mode-coupling theory of the glass-transition--as introduced in a recent paper by Götze and Mayr for a discussion of phenomena resembling the Boson Peak and High-Frequency Sound observations made in real glass-formers--is examined in detail. It amounts to a neglection of two-phonon processes and thus provides a clear physical picture for the MCT solutions deep in the glass. In addition, the effect of additional symplifying approximations and the combination of these approximations is studied.
8 pages, Proceedings of the 4th IDMRCS (Crete, 2001), to appear in J. Non-Cryst. Sol