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11 papers · 2 filters
Classical intermittency and quantum Anderson transition
Antonio M. Garcia-Garcia
We investigate the quantum properties of 1D quantum systems whose classical counterpart presents intermittency. The spectral correlations are expressed in terms of the eigenvalues…
Critical thermodynamics of the two-dimensional +/-J Ising spin glass
J. Lukic, A. Galluccio, E. Marinari +2
We compute the exact partition function of 2d Ising spin glasses with binary couplings. In these systems, the ground state is highly degenerate and is separated from the first exci…
Order-parameter fluctuations in Ising spin glasses at low temperatures
Matteo Palassini, Marta Sales, Felix Ritort
We present a numerical study of the order-parameter fluctuations for Ising spin glasses in three and four dimensions at very low temperatures and without an external field. Accurat…
Near optimal configurations in mean field disordered systems
A. Pagnani, G. Parisi, M. Ratieville
We present a general technique to compute how the energy of a configuration varies as a function of its overlap with the ground state in the case of optimization problems. Our appr…
Large deviations in spin-glass ground-state energies
A. Andreanov, F. Barbieri, O. C. Martin
The ground-state energy E_0 of a spin glass is an example of an extreme statistic. We consider the large deviations of this energy for a variety of models when the number of spins…
The Phase Diagram of Random Heteropolymers
A. Montanari, M. Mueller, M. Mezard
We propose a new analytic approach to study the phase diagram of random heteropolymers, based on the cavity method. For copolymers we analyze the nature and phenomenology of the gl…