搜索结果: 1-15 共查到“物理学 Disorder”相关记录29条 . 查询时间(0.046 秒)
Superfluid-Insulator Transition in a Commensurate One-Dimensional Bosonic System with Off-Diagonal Disorder
Quantum phase transition d lattice boson system monte carlo simulation of the superfluid
2014/12/20
We study the nature of the superfluid-insulator quantum phase transition in a one-dimensional system of lattice bosons with off-diagonal disorder in the limit of a large integer filling factor. Monte ...
Superfluid Transition in a Bose Gas with Correlated Disorder
Three dimensional gas superfluid dielectric quantum monte carlo space simulation
2014/12/19
The superfluid transition of a three-dimensional gas of hard-sphere bosons in a disordered medium is studied using quantum Monte Carlo methods. Simulations are performed in continuous space both in th...
Dilute Bose gas with correlated disorder: a path integral Monte Carlo study
Dilute bose gas thermodynamics integral monte carlo method the continuous space superfluids quantum
2014/12/19
We investigate the thermodynamic properties of a dilute Bose gas in a correlated random potential using exact path integral Monte Carlo methods. The study is carried out in continuous space and disord...
AC spectrum for a class of random operators at small disorder
AC spectrum random operators small disorder Spectral Theory
2011/9/1
Abstract: In this paper we present a class of Anderson type operators with independent, non-stationary (non-decaying) random potentials supported on a subset of positive density in the odd-dimensional...
Critical behavior of the Random-Field Ising Magnet with long range correlated disorder
random- eld Ising model, correlated disorder, corrections to scaling
2011/9/29
We study the correlated-disorder driven zero-temperature phase transition of the Random-Field Ising Magnet using exact numerical ground-state calculations for cubic lattices. We consider correlations ...
Voltage Collapse and ODE Approach to Power Flows: Analysis of a Feeder Line with Static Disorder in Consumption/Production
Voltage Collapse Consumption/Production Feeder Line Static Disorder
2011/9/15
We consider a model of a distribution feeder connecting multiple loads to the sub-station. Voltage is controlled directly at the head of the line (sub-station), however,voltage anywhere further down t...
Phase disorder on laser beam combining in a Talbot resonator
Talbot resonator laser beam combining a six-core and a twelve-core photonic crystal fiber
2011/8/31
We study the role that phase disorder plays in the mode discrimination characteristics of a Talbot resonator.Two cases considered here correspond to a six-core and a twelve-core photonic crystal fiber...
Diffusion-limited reactions on a two-dimensional lattice with binary disorder
Diffusion-limited reactions two-dimensional lattice with binary disorder
2010/11/19
Reaction-diffusion systems where transition rates exhibit quenched disorder are common in physical and chemical systems. We study pair reactions on a periodic two-dimensional lattice, including contin...
Optical Properties of (SrMnO3)n/(LaMnO3)2n superlattices: an insulator-to-metal transition observed in the absence of disorder
Optical Properties insulator-to-metal transition absence of disorder
2010/11/23
We measure the optical conductivity 1(!) of (SrMnO3)n/(LaMnO3)2n superlattices (SL) for
n = 1, 3, 5, and 8 and 10 < T < 400 K. Data show a T -dependent insulator to metal transition
(IMT) for n 3...
Conductance through quantum wires with Levy-type disorder: universal statistics in anomalous quantum transport
Conductance through quantum wires Levy-type disorder anomalous quantum transport
2010/11/23
Random processes characterized by density probabilities with a long tail–L´evy-type
processes– have been found in very different phenomena and fields such as biology, economy, and physics.
Protecting clean critical points by local disorder correlations
Protecting clean critical points local disorder correlations
2010/11/17
We show that a broad class of quantum critical points can be stable against locally correlated
disorder even if they are unstable against uncorrelated disorder. Although this result seemingly contrad...
Photonic crystals are extremely sensitive to structural disorder even to the point of completely losing their functionalities. While on one side this can be detrimental for applications in traditiona...
Coupled-resonator optical waveguides: Q-factor and disorder influence
Coupled-resonator optical waveguides Q-factor disorder influence
2010/11/16
Coupled resonator optical waveguides (CROW) can significantly reduce light propagation pulse velocity due to pronounced dispersion properties. A number of interesting applications have been proposed ...
Single and two-particle energy gaps across the disorder-driven superconductor-insulator transition
Single two-particle energy gaps disorder-driven superconductor-insulator transition
2010/11/23
The competition between superconductivity and localization raises profound questions in condensed matter physics. In spite of decades of research, the mechanism of the superconductorinsulator transiti...
Infinite disorder scaling of random quantum magnets in three and higher dimensions
Infinite disorder scaling random quantum magnets dimensions
2010/11/11
Using a very efficient numerical algorithm of the strong disorder renormalization group method we have extended the investigations about the critical behavior of the random transverse-field Ising mode...