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Publications of Trinh Xuan Hoang

Physical Review E 60, 3219-3226 (1999)


Energy landscapes, supergraphs, and ‘‘folding funnels’’ in spin systems

P. Garstecki, T. X. Hoang, M. Cieplak

Dynamical connectivity graphs, which describe dynamical transition rates between local energy minima of a system, can be displayed against the background of a disconnectivity graph which represents the energy landscape of the system. The resulting supergraph describes both dynamics and statics of the system in a unified coarse-grained sense. We give examples of the supergraphs for several two-dimensional spin and protein-related systems. We demonstrate that disordered ferromagnets have supergraphs akin to those of model proteins whereas spin glasses behave like random sequences of amino acids that fold badly.