Inhaltszusammenfassung

In this Letter we address the nature of broken ergodicity in the low temperature phase of ising spin glasses by examining spectral properties of spin correlation functions c-ij drop (sisj). we argue that more than one extensive {[}i.e., o(n)] eigenvalue in this matrix signals replica symmetry breaking. monte carlo simulations of the infinite-range ising spin-glass model, above and below the almeida-thouless line, support this conclusion. exchange monte carlo simulations for the short-range mo...In this Letter we address the nature of broken ergodicity in the low temperature phase of ising spin glasses by examining spectral properties of spin correlation functions c-ij drop (sisj). we argue that more than one extensive {[}i.e., o(n)] eigenvalue in this matrix signals replica symmetry breaking. monte carlo simulations of the infinite-range ising spin-glass model, above and below the almeida-thouless line, support this conclusion. exchange monte carlo simulations for the short-range model in four dimensions find a single extensive eigenvalue and a large subdominant eigenvalue consistent with droplet model expectations.» weiterlesen» einklappen

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Klassifikation

DFG Fachgebiet:
3.17 - Theoretische Chemie

DDC Sachgruppe:
Physik