The arboreal gas and the supersphere sigma model
Jacobsen, J.L., Saleur, H. Nuclear Physics B 716 (2005) 439-461
The arboreal gas and the supersphere sigma model Lire la suite »
Jacobsen, J.L., Saleur, H. Nuclear Physics B 716 (2005) 439-461
The arboreal gas and the supersphere sigma model Lire la suite »
Ayari, A., Danneau, R., Requardt, H., Ortega, L., Lorenzo, J.E., Monceau, P., Currat, R., Brazovskii, S., GrÃ_bel, G. Journal de Physique IV France 131 (2005) 125
Joel Chavas 1, Cyril Furtlehner 2, Marc Mezard 2, Riccardo Zecchina 3 Journal of Statistical Mechanics: Theory and Experiment P (2005) P11016 We discuss the implementation of two distributed solvers of the random K-SAT problem, based on some development of the recently introduced survey-propagation (SP) algorithm. The first solver, called the \’SP diffusion algorithm\’, diffuses as dynamical information the maximum bias over the
Survey-propagation decimation through distributed local computations Lire la suite »
A. Braunstein 1, 2, M. Mezard 3, R. Zecchina 2 Random Structures and Algorithms 27 (2005) 201-226 We study the satisfiability of randomly generated formulas formed by $M$ clauses of exactly $K$ literals over $N$ Boolean variables. For a given value of $N$ the problem is known to be most difficult with $\\alpha=M/N$ close to the experimental threshold $\\alpha_c$ separating the region
Survey propagation: an algorithm for satisfiability Lire la suite »
Clément, D., Varon, A.F., Hugbart, M., Retter, J., Bouyer, P., Sanchez-Palencia, L., Gangardt, D.M., Shlyapnikov, G.V., Aspect, A. Physical Review Letters 95 (2005) 170409
G. Orso 1, G. V. Shlyapnikov 2, 3 Physical Review Letters 95 (2005) 260402 We calculate the superfluid transition temperature for a two-component 3D Fermi gas in a 1D tight optical lattice and discuss a dimensional crossover from the 3D to quasi-2D regime. For the geometry of finite size discs in the 1D lattice, we find that even for a
Superfluid Fermi gas in a 1D optical lattice Lire la suite »
Matveenko, S.I., Brazovskii, S. Physical Review B 72 (2005) 085120
Subgap tunneling through channels of polarons and bipolarons in chain conductors Lire la suite »
Mike Miller 1, Denis Ullmo 1, 2, Harold U. Baranger 1 Physical Review B 72 (2005) 045305 Despite considerable work on the energy-level and wavefunction statistics of disordered quantum systems, numerical studies of those statistics relevant for electron-electron interactions in mesoscopic systems have been lacking. We plug this gap by using a tight-binding model to study a wide variety of statistics for
M. V. Tamm 1, 2, S. K. Nechaev 2, 3, I. Ya. Erukhimovich 1, 4 European Physical Journal E 17 (2005) 209-219 We investigate the statistical properties of a randomly branched 3–functional $N$–link polymer chain without excluded volume, whose one point is fixed at the distance $d$ from the impenetrable surface in a 3–dimensional space. Exactly solving the Dyson-type equation for the partition function
Statistics of randomly branched polymers in a semi-space Lire la suite »
David S. Dean 1, David Lancaster 2, Satya. N. Majumdar 3 Physical Review E: Statistical, Nonlinear, and Soft Matter Physics 72 (2005) 026125 We study the statistical mechanics of a class of problems whose phase space is the set of permutations of an ensemble of quenched random positions. Specific examples analyzed are the finite temperature traveling salesman problem on several different domains
Statistical mechanics of combinatorial optimization problems with site disorder Lire la suite »