2013

Optimal diffusive search: nonequilibrium resetting versus equilibrium dynamics

Martin R. Evans 1, Satya N. Majumdar 2, Kirone Mallick 3 Journal of Physics A: Mathematical and Theoretical 46 (2013) 185001 We study first-passage time problems for a diffusive particle with stochastic resetting with a finite rate $r$. The optimal search time is compared quantitatively with that of an effective equilibrium Langevin process with the same stationary distribution. It is shown […]

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On the role of electron-nucleus contact and microwave saturation in Thermal Mixing DNP

Sonia Colombo Serra 1, Alberto Rosso 2, Fabio Tedoldi 1 Physical Chemistry Chemical Physics 15 (2013) 8416-8428 We have explored the manifold physical scenario emerging from a model of Dynamic Nuclear Polarization (DNP) via thermal mixing under the hypothesis of highly effective electron-electron interaction. When the electron and nuclear reservoirs are also assumed to be in strong thermal contact and the

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New phase transition in random planar diagrams and RNA-type matching

Andrey Y. Lokhov 1, Olga V. Valba 1, 2, Mikhail V. Tamm 3, Sergei K. Nechaev 1, 4 Physical Review E 88 (2013) 052117 We study the planar matching problem, defined by a symmetric random matrix with independent identically distributed entries, taking values 0 and 1. We show that the existence of a perfect planar matching structure is possible only above a certain critical density,

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Network function shapes network structure: the case of the Arabidopsis flower organ specification genetic network

Adrien Henry ab , Françoise Monéger c , Areejit Samal* ad and Olivier C. Martin* ab Molecular Biosystems 9 (2013) 1726-1735 The reconstruction of many biological networks has allowed detailed studies of their structural properties. Several features exhibited by these networks have been interpreted to be the result of evolutionary dynamics. For instance the degree

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Morphology transition at depinning in a solvable model of interface growth in a random medium

Hiroki Ohta 1 Martin-Luc Rosinberg 2 Gilles Tarjus 2 Europhysics Letters, EDP Science, 2013, 104, pp.16003 We propose a simple, exactly solvable, model of interface growth in a random medium that is a variant of the zero-temperature random-field Ising model on the Cayley tree. This model is shown to have a phase diagram (critical depinning

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Modeling of dynamics of field-induced transformations in charge density waves

T. Yi 1,3 , N. Kirova 2,4 , and S. Brazovskii 1,4 Eur. Phys. J. Special Topics 222, 1035–1046 (2013) We present a modeling of stationary states and their transient dynamic for charge density waves in restricted geometries of realistic junctions under the applied voltage or the passing current. The model takes into account multiple

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Mesoscopic fluctuations in the Fermi-liquid regime of the Kondo problem

Denis Ullmo 1, * Dong E. Liu 2 Sébastien Burdin 3 Harold U. Baranger 2 European Physical Journal B: Condensed Matter and Complex Systems, Springer-Verlag, 2013, 86 (8), pp.353. 〈10.1140/epjb/e2013-40418-3〉 We consider the low temperature regime of the mesoscopic Kondo problem, and in particular the relevance of a Fermi-liquid description of this regime. Mesoscopic fluctuations

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