Nom de l’auteur/autrice :admin

Diffusion with Optimal Resetting

Martin R. Evans 1, Satya N. Majumdar 2 Journal of Physics A: Mathematical and Theoretical 44 (2011) 435001 We consider the mean time to absorption by an absorbing target of a diffusive particle with the addition of a process whereby the particle is reset to its initial position with rate $r$. We consider several generalisations of the model of […]

Diffusion with Optimal Resetting Lire la suite »

Counter-ions at Charged Walls: Two Dimensional Systems

L. Samaj 1, E. Trizac 2 The European Physical Journal Special Topics 34 (2011) 20 We study equilibrium statistical mechanics of classical point counter-ions, formulated on 2D Euclidean space with logarithmic Coulomb interactions (infinite number of particles) or on the cylinder surface (finite particle numbers), in the vicinity of a single uniformly charged line (one single double-layer), or between

Counter-ions at Charged Walls: Two Dimensional Systems Lire la suite »

Conformal blocks in Virasoro and W theories: duality and the Calogero-Sutherland model

Benoit Estienne 1, 2, Vincent Pasquier 3, Raoul Santachiara 4, 5, Didina Serban 3 Nuclear Physics B 860 (2011) 377-420 We study the properties of the conformal blocks of the conformal field theories with Virasoro or W-extended symmetry. When the conformal blocks contain only second-order degenerate fields, the conformal blocks obey second order differential equations and they can be interpreted as ground-state wave functions of

Conformal blocks in Virasoro and W theories: duality and the Calogero-Sutherland model Lire la suite »

Competing orders in one-dimensional half-filled multicomponent fermionic cold atoms: The Haldane-charge conjecture

H. Nonne 1, P. Lecheminant 1, Sylvain Capponi 2, G. Roux 3, E. Boulat 4 Physical Review B 84 (2011) 125123 We investigate the nature of the Mott-insulating phases of half-filled 2N-component fermionic cold atoms loaded into a one-dimensional optical lattice. By means of conformal field theory techniques and large-scale DMRG calculations, we show that the phase diagram strongly depends on the parity of $N$.

Competing orders in one-dimensional half-filled multicomponent fermionic cold atoms: The Haldane-charge conjecture Lire la suite »

Colloidal ionic complexes on periodic substrates: ground state configurations and pattern switching

Samir El Shawish 1, Jure Dobnikar 1, Emmanuel Trizac 2 Physical Review E: Statistical, Nonlinear, and Soft Matter Physics 83 (2011) 041403 We theoretically and numerically studied ordering of ‘colloidal ionic clusters’ on periodic substrate potentials as those generated by optical trapping. Each cluster consists of three charged spherical colloids: two negatively and one positively charged. The substrate is a square

Colloidal ionic complexes on periodic substrates: ground state configurations and pattern switching Lire la suite »

Characterizing order in amorphous systems

François Sausset 1, 2, Dov Levine 1 Physical Review Letters 107 (2011) 045501 We measure and compare three correlation lengths proposed to describe the extent of structural order in amorphous systems. In particular, the recently proposed ‘patch correlation length’ is measured as a function of temperature and fragility and shown to be comparable with other measures. In addition, we demonstrate

Characterizing order in amorphous systems Lire la suite »

Casimir force between sharp-shaped conductors

Mohammad F. Maghrebi 1, Sahand Jamal Rahi 1, 2, Thorsten Emig 3, Noah Graham 4, Robert L. Jaffe 1, Mehran Kardar 1 Proceeding of the national academy of sciences 108 (2011) 6867-6871 Casimir forces between conductors at the sub-micron scale cannot be ignored in the design and operation of micro-electromechanical (MEM) devices. However, these forces depend non-trivially on geometry, and existing formulae and approximations cannot deal with realistic

Casimir force between sharp-shaped conductors Lire la suite »

Atom-dimer and dimer-dimer scattering in fermionic mixtures near a narrow Feshbach resonance

J. Levinsen 1, 2, D. S. Petrov 1, 3 European Physical Journal D 65 (2011) 67-82 We develop a diagrammatic approach for solving few-body problems in heteronuclear fermionic mixtures near a narrow interspecies Feshbach resonance. We calculate s-, p-, and d-wave phaseshifts for the scattering of an atom by a weakly-bound dimer. The fermionic statistics of atoms and the composite nature

Atom-dimer and dimer-dimer scattering in fermionic mixtures near a narrow Feshbach resonance Lire la suite »

Retour en haut