Nom de l’auteur/autrice :admin

Florent Krzakala 1, Marc Mézard 1, Markus Muller 1 Europhysics Letters (EPL) 57 (2002) 752-758 We characterize the low temperature phase of a simple model for RNA secondary structures by determining the typical energy scale E(l) of excitations involving l bases. At zero temperature, we find a scaling law E(l) \sim l^\theta with \theta \approx 0.23, and this same scaling holds […]

Jesper-Lykke Jacobsen 1, Paul Zinn-Justin 1 Physical Review E: Statistical, Nonlinear, and Soft Matter Physics 66 (2002) 055102 We consider the fractal dimensions d_k of the k-connected part of percolation clusters in two dimensions, generalizing the cluster (k=1) and backbone (k=2) dimensions. The codimensions X_k = 2-d_k describe the asymptotic decay of the probabilities P(r,R) ~ (r/R)^{X_k} that an

Paul Zinn-Justin 1, Jean-Bernard Zuber 2 Disc. Math. 246 (2002) 343 Using matrix model techniques for the counting of planar Feynman diagrams, recent results of Sundberg and Thistlethwaite on the counting of alternating tangles and links are reproduced. 1. Laboratoire de Physique Théorique et Hautes Energies (LPTHE), CNRS : UMR7589 – Université Paris VI – Pierre et Marie Curie – Université Paris VII

Giulio Biroli 1, Marc Mézard 2 Physical Review Letters 88 (2002) 025501 Motivated by the concept of geometrical frustration, we introduce a class of statistical mechanics lattice models for the glass transition. Monte Carlo simulations in three dimensions show that they display a dynamical glass transition which is very similar to that observed in other off-lattice systems and which

Macris, N., Ouvry, S. Proceedings of the Third Sakharov Conference, Lebedev Institute, Moscou, June (2002)

Brazovskii, S., Kirova, N. Paris-Sud, Spéciale Recherche (2002) 90

Helena R. Lourenco 1, Olivier C. Martin 2, Thomas Stützle 3 Science Kluwer 57 (2002) 321-353 This is a survey of ‘Iterated Local Search’, a general purpose metaheuristic for finding good solutions of combinatorial optimization problems. It is based on building a sequence of (locally optimal) solutions by: (1) perturbing the current solution; (2) applying local search to that modified solution. At a

Vladimir Korepin 1, Paul Zinn-Justin 1 Journal of Mathematical Physics 43 (2002) 3261-3267 In this note, we consider the six-vertex model with domain wall boundary conditions, defined on a $M\times M$ lattice, in the inhomogeneous case where the partition function depends on 2M inhomogeneities $\lambda_j$ and $\mu_k$. For a particular choice of the set of $\lambda_j$ we find a

Kirova, N., Brazovskii, S. Journal de Physique IV 12 (2002) Pr9-173

Paul Zinn-Justin 1 Nuclear Physics B 634 (2002) 417 The expression of the large $N$ Harish Chandra–Itzykson–Zuber (HCIZ) integral in terms of the moments of the two matrices is investigated using an auxiliary unitary two-matrix model, the associated biorthogonal polynomials and integrable hierarchy. We find that the large $N$ HCIZ integral is governed by the dispersionless Toda