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cond-mat.soft2003★ 38 cited

Bulk inhomogeneous phases of anisotropic particles: A fundamental measure functional study of the restricted orientations model

Yuri Martinez-Raton

The phase diagram of prolate and oblate particles in the restricted orientations approximation (Zwanzig model) is calculated. Transitions to different inhomogeneous phases (smectic…

cond-mat.mtrl-sci2003★ 30 cited

Generalized drift-diffusion model for miniband superlattices

L. L. Bonilla, R. Escobedo, A. Perales

A drift-diffusion model of miniband transport in strongly coupled superlattices is derived from the single-miniband Boltzmann-Poisson transport equation with a BGK (Bhatnagar-Gross…

cond-mat.stat-mech2003★ 29 cited

Hidden structure in the randomness of the prime number sequence?

Saul Ares, Mario Castro

We report a rigorous theory to show the origin of the unexpected periodic behavior seen in the consecutive differences between prime numbers. We also check numerically our findings…

cond-mat.stat-mech2003★ 28 cited

Density functional theory for nearest-neighbor exclusion lattice gasses in two and three dimensions

Luis Lafuente, Jose A. Cuesta

To speak about fundamental measure theory obliges to mention dimensional crossover. This feature, inherent to the systems themselves, was incorporated in the theory almost from the…

cond-mat.stat-mech2003★ 14 cited

Emergence of pulled fronts in fermionic microscopic particle models

Esteban Moro

We study the emergence and dynamics of pulled fronts described by the Fisher-Kolmogorov-Petrovsky-Piscounov (FKPP) equation in the microscopic reaction-diffusion process A + A <->…

cond-mat.soft2003★ 108 cited

Instabilities in complex mixtures with a large number of components

Richard P. Sear, Jose A. Cuesta

Inside living cells are complex mixtures of thousands of components. It is hopeless to try to characterise all the individual interactions in these mixtures. Thus, we develop a sta…

cond-mat.stat-mech2003★ 3 cited

Super-roughening as a disorder-dominated flat phase

Saul Ares, Angel Sanchez, Alan R. Bishop

We study the phenomenon of super-roughening found on surfaces growing on disordered substrates. We consider a one-dimensional version of the problem for which the pure, ordered mod…

cond-mat.str-el2003★ 10 cited

Interlayer hopping properties of electrons in layered metals

M. A. H. Vozmediano, M. P. Lopez-Sancho, F. Guinea

A formalism is proposed to study the electron tunneling between extended states, based on the spin-boson Hamiltonian previously used in two-level systems. It is applied to analyze…

cond-mat.soft2003★ 40 cited

Phase behavior of hard-core lattice gases: A Fundamental Measure approach

Luis Lafuente, Jose A. Cuesta

We use an extension of fundamental measure theory to lattice hard-core fluids to study the phase diagram of two different systems. First, two-dimensional parallel hard squares with…

cond-mat.mes-hall2003★ 17 cited

Soliton ratchets out of point-like inhomogeneities

Luis Morales-Molina, Franz G. Mertens, Angel Sanchez

We introduce and study a novel design for a ratchet potential for soliton excitations. The potential is implemented by means of an array of point-like (delta) inhomogeneities in an…

cond-mat.stat-mech2003★ 132 cited

General non-existence theorem for phase transitions in one-dimensional systems with short range interactions, and physical examples of such transitions

Jose A. Cuesta, Angel Sanchez

We examine critically the issue of phase transitions in one-dimensional systems with short range interactions. We begin by reviewing in detail the most famous non-existence result,…

cond-mat.stat-mech2003★ 57 cited

Internal mode mechanism for collective energy transport in extended systems

Luis Morales-Molina, Niurka R. Quintero, Franz G. Mertens +1

We study directed energy transport in homogeneous nonlinear extended systems in the presence of homogeneous ac forces and dissipation. We show that the mechanism responsible for un…

cond-mat.soft2003★ 41 cited

Phase diagrams of Zwanzig models: The effect of polydispersity

Yuri Martinez-Raton, Jose A. Cuesta

The first goal of this article is to study the validity of the Zwanzig model for liquid crystals to predict transitions to inhomogeneous phases (like smectic and columnar) and the…

cond-mat.mtrl-sci2003★ 42 cited

Edge dislocations in crystal structures considered as traveling waves of discrete models

A. Carpio, L. L. Bonilla

The static stress needed to depin a 2D edge dislocation, the lower dynamic stress needed to keep it moving, its velocity and displacement vector profile are calculated from first p…

cond-mat.stat-mech2003★ 13 cited

Defect formation in the Swift-Hohenberg equation

Tobias Galla, Esteban Moro

We study numerically and analytically the dynamics of defect formation during a finite-time quench of the two dimensional Swift-Hohenberg (SH) model of Rayleigh-Benard convection.…

cond-mat.mtrl-sci2003★ 4 cited

Free boundary problems describing two-dimensional pulse recycling and motion in semiconductors

L. L. Bonilla, R. Escobedo, F. J. Higuera

An asymptotic analysis of the Gunn effect in two-dimensional samples of bulk n-GaAs with circular contacts is presented. A moving pulse far from contacts is approximated by a movin…