2004

Hydrodynamics within the Electric Double Layer on slipping surfaces

Laurent Joly 1 Christophe Ybert 1 Emmanuel Trizac 2 Lyderic Bocquet 1 Physical Review Letters, American Physical Society, 2004, 93 (25), pp.257805. 〈10.1103/PhysRevLett.93.257805〉 We show, using extensive Molecular Dynamics simulations, that the dynamics of the electric double layer (EDL) is very much dependent on the wettability of the charged surface on which the EDL develops. …

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Weakly bound dimers of fermionic atoms

D. Petrov 1, 2, Christophe Salomon 3, Gora V. Shlyapnikov 1, 2, 3 Physical Review Letters 93 (2004) 090404 We discuss the behavior of weakly bound bosonic dimers formed in a cold Fermi gas at a large positive scattering length $a$ for the interspecies interaction. We find the exact solution for the dimer-dimer elastic scattering and obtain a strong decrease of their collisional relaxation and …

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Universal correlations of trapped one-dimensional impenetrable bosons

Dimitri M. Gangardt 1, 2 Journal of Physics A 37 (2004) 9335-9356 We calculate the asymptotic behaviour of the one body density matrix of one-dimensional impenetrable bosons in finite size geometries. Our approach is based on a modification of the Replica Method from the theory of disordered systems. We obtain explicit expressions for oscillating terms, similar to fermionic Friedel …

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The traveling salesman problem, conformal invariance, and dense polymers

Jesper-Lykke Jacobsen 1, Nicholas Read 2, Hubert Saleur 3, 4 Physical Review Letters 93 (2004) 038701 We propose that the statistics of the optimal tour in the planar random Euclidean traveling salesman problem is conformally invariant on large scales. This is exhibited in power-law behavior of the probabilities for the tour to zigzag repeatedly between two regions, and in subleading corrections to …

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The Phase Diagram of Random Heteropolymers

Andrea Montanari 1, Markus Muller 2, Marc Mézard 2 Physical Review Letters 92 (2004) 185509 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 glass transition as a function of sequence correlations. Depending on these correlations, we find that two different …

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Survival in equilibrium step fluctuations

C. Dasgupta 1, M. Constantin 1, 2, S. Das Sarma 1, Satya N. Majumdar 3 Physical Review E: Statistical, Nonlinear, and Soft Matter Physics 69 (2004) 022101 We report the results of analytic and numerical investigations of the time scale of survival or non-zero-crossing probability $S(t)$ in equilibrium step fluctuations described by Langevin equations appropriate for attachment/detachment and edge-diffusion limited kinetics. An exact relation …

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