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Condensed Matter papers — page 203

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Universal Dynamics of Independent Critical Relaxation Modes
Scaling behavior is studied of several dominant eigenvalues of spectra of Markov matrices and the associated correlation times governing critical slowing down in models in the universality class of…
M. P. Nightingale, H. W. J. BloeteAug 7, 1997
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The Bak-Tang-Wiesenfeld sandpile model around the upper critical dimension
We consider the Bak-Tang-Wiesenfeld sandpile model on square lattices in different dimensions (D>=6). A finite size scaling analysis of the avalanche probability distributions yields the values of…
S. Lubeck, K. D. UsadelAug 7, 1997
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Shock Profiles for the Asymmetric Simple Exclusion Process in One Dimension
The asymmetric simple exclusion process (ASEP) on a one-dimensional lattice is a system of particles which jump at rates p and 1-p (here p>1/2) to adjacent empty sites on their right and left…
B. Derrida, J. L. Lebowitz, E. R. SpeerAug 6, 1997
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Dynamical properties of the pinned Wigner crystal
We study various dynamical properties of the weakly pinned Wigner crystal in a high magnetic field. Using a Gaussian variational method we can compute the full frequency and field dependence of the…
R. Chitra, T. Giamarchi, P. Le DoussalAug 5, 1997
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Bound states in a nonlinear Kronig-Penney model
We study the bound states of a Kronig Penney potential for a nonlinear one-dimensional Schroedinger equation. This potential consists of a large, but not necessarily infinite, number of equidistant…
S. Theodorakis, E. LeontidisAug 5, 1997
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Derivation of symmetry-based pseudo spin models for modulated materials
A general concept for the derivation of symmetry-based pseudo spin Hamiltonians is described. It systematically bridges the gap between the atomistic basis and various pseudo spin models presented in…
Boris Neubert, Michel Pleimling, Rolf SiemsAug 5, 1997
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Non-Hermitean De-Localization: Multiple Scattering and Bounds
We study localization and delocalization in a class of non-hermitean Hamiltonians inspired by the problem of vortex pinning in superconductors. We show how to take into account multiple scattering.…
E. Brezin, A. ZeeAug 5, 1997
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Local polariton states in impure ionic crystals
We consider the dynamics of an ionic crystal with a single impurity in the vicinity of the polariton resonance. We show that if the polariton spectrum of the host crystal allows for a gap between…
V. S. Podolsky, Lev I. Deych, A. A. LisyanskyAug 4, 1997
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Cumulant expansion of the periodic Anderson model in infinite dimension
The diagrammatic cumulant expansion for the periodic Anderson model with infinite Coulomb repulsion (U=∞ ) is considered here for an hypercubic lattice of infinite dimension (d=∞ ). The…
M. E. Foglio, M. S. FigueiraAug 4, 1997
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Quantum interference in nanometric devices: ballistic transport across arrays of T-shaped quantum wires
We propose that the recently realized T-shaped semiconductor quantum wires (T-wires) could be exploited as three-terminal quantum interference devices. T-wires are formed by intersecting two quantum…
G. Goldoni, F. Rossi, E. MolinariAug 4, 1997
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Surface Phason-Polaritons in Charge Density Wave Films
The coupled non-radiative excitations of the electromagnetic field and phasons in films with a quasi one-dimensional charge density wave (CDW) are evaluated for P--polarization and CDW conducting…
W. Wonneberger, R. LamcheAug 4, 1997
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Magnus and Other Forces on Vortices in Superfluids and Superconductors
This is the text of a talk which is to be published in the proceedings of the Joint APCTP-ICTP conference (Seoul National University Korea, May 26th-30th 1997).
Michael StoneAug 2, 1997
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Electronic transport properties of quasicrystals: a Review
We present a review of some results concerning electronic transport properties of quasicrystals. After a short introduction to the basic concepts of quasiperiodicity, we consider the experimental…
S. Roche, Guy Trambly de Laissardiere, D. MayouAug 2, 1997
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Conductivity in 3D quasiperiodic systems
We develop a new real-space method which allows to evaluate the Kubo-Greenwood conductivity of independent electrons in static aperiodic potentials. We apply it to a numerical study of propagation…
S. Roche, D. MayouAug 2, 1997
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A simple stochastic model for the dynamics of condensation
We consider the dynamics of a model introduced recently by Bialas, Burda and Johnston. At equilibrium the model exhibits a transition between a fluid and a condensed phase. For long evolution times…
J-M Drouffe, C Godreche, F CamiaAug 1, 1997
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Quantized Conductance of One-Dimensional Doped Mott Insulator
The possible modification of quantized conductance of one-dimensional doped Mott insulator, where the Umklapp scattering plays an important role, is studied based on the method by Maslov-Stone and…
Michiyasu Mori, Masao Ogata, Hidetoshi FukuyamaAug 1, 1997
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Band Structure of Periodically Surface-Scattered Water Waves
Bloch wavefunctions are used to derive dispersion relations for water wave propagation in the presence of an infinite array of periodically arranged surface scatterers. For one dimensional…
Tom ChouAug 1, 1997
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Maxwell-Schroedinger Equation for Polarized Light and Evolution of the Stokes Parameters
By starting with the Maxwell theory of electromagnetism, we study the change of polarization state of light transmitting through optically anisotropic media. The basic idea is to reduce the Maxwell…
Hiroshi Kuratsuji, Shouhei KakigiJul 31, 1997
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Fingering Instability in Combustion
A thin solid (e.g., paper), burning against an oxidizing wind, develops a fingering instability with two decoupled length scales. The spacing between fingers is determined by the Péclet number (ratio…
O. Zik, Z. Olami, E. MosesJul 31, 1997
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Polymer-Mode-Coupling Theory of Finite-Size-Fluctuation Effects in Entangled Solutions, Melts and Gels. II. Comparison with Experiment
The predictions of the polymer mode coupling theory for the finite size corrections to the transport coefficients of entangled polymeric systems are tested in comparisons with various experimental…
Matthias Fuchs, Kenneth S. SchweizerJul 31, 1997
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Polymer-Mode-Coupling Theory of Finite-Size-Fluctuation Effects in Entangled Solutions, Melts and Gels. I. General Formulation and Predictions
The transport coefficients of dense polymeric fluids are approximately calculated from the microscopic intermolecular forces. The following finite molecular weight effects are discussed within the…
Matthias Fuchs, Kenneth S. SchweizerJul 31, 1997
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Thomas-Fermi Description of Incoherent Light Scattering from an Atomic-Trap BEC
We present a Thomas-Fermi treatment of resonant incoherent scattering of low-intensity light by a dilute spatially confined Bose-Einstein condensate. The description gives simple analytical results…
Eddy Timmermans, Paolo TommasiniJul 30, 1997
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One-Dimensional Disordered Supersymmetric Quantum Mechanics: A Brief Survey
We consider a one-dimensional model of localization based on the Witten Hamiltonian of supersymmetric quantum mechanics. The low energy spectral properties are reviewed and compared with those of…
Alain Comtet, Christophe TexierJul 30, 1997
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Van der Waals Energies in Density Functional Theory
In principle, density functional theory yields the correct ground-state densities and energies of electronic systems under the action of a static external potential. However, traditional…
Walter Kohn, Yigal Meir, Dmitrii E. MakarovJul 30, 1997
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Electronic Liquid Crystal Phases of a Doped Mott Insulator
The character of the ground state of an antiferromagnetic insulator is fundamentally altered upon addition of even a small amount of charge. The added charges agglomerate along domain walls at which…
S. A. Kivelson, E. Fradkin, V. J. EmeryJul 30, 1997
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