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DY: Fachverband Dynamik und Statistische Physik

DY 16: Glasses II (joint session DF/DY)

DY 16.7: Vortrag

Dienstag, 26. Februar 2008, 16:00–16:15, EB 407

The m-component spin glass on a Bethe lattice — •Axel Braun¹ and Timo Aspelmeier² — ¹Institut für theoretische Physik, Universität Göttingen — ²Max-Planck-Institut für Dynamik und Selbstorganisation, Göttingen

Using an extension of the cavity method to m-component vector spins on a Bethe lattice, we have derived a self-consistent equation of cavity fields, with m→∞. We have improved these findings by calculating corrections for a finite number of spin components and used these self consistent field equations to investigate the distribution of cavity fields in the low temperature phase. We provide numerical evidence that the RS distribution is unstable for finite m slightly below the critical temperature, indicating a second transition to a RSB state.