Multi-particle collision simulations of 2D one-component plasmas: anomalous transport and dimensional crossovers

Abstract

By means of hybrid multi-particle collsion--particle-in-cell (MPC-PIC) simulations we study the dynamical scaling of energy and density correlations at equilibrium in moderately coupled 2D and quasi 1D plasmas. We find that the predictions of Nonlinear Fluctuating Hydrodynamics for the structure factors of density and energy fluctuations in 1D systems with three global conservation laws hold true also for two dimensional systems that are more extended along one of the two spatial dimensions. Moreover, from the analysis of the equilibrium energy correlators and density structure factors of both 1D and 2D neutral plasmas, we find that neglecting the contribution of the fluctuations of the vanishing self-consistent electrostatic fields overestimates the interval of frequencies over which the anomalous transport is observed. Such violations of the expected scaling in the currents correlation are found in different regimes, hindering the observation of the asymptotic scaling predicted by the theory.

13 pages, 10 figures. Submitted to Phys.Rev.E, comments welcome

References in corpus (18)

• Heat Transport in low-dimensional systems
• Exact scaling functions for one-dimensional stationary KPZ growth
• Heat transport in low dimensions: introduction and phenomenology
• Dynamical correlations and collective excitations of Yukawa liquids
• Fibonacci family of dynamical universality classes
• Transport coefficients of off-lattice mesoscale-hydrodynamics simulation techniques
• Classical and quantum Coulomb crystals
• Coupling Strength in Coulomb and Yukawa One-Component Plasmas
• Time correlation functions and transport coefficients of two-dimensional Yukawa liquids
• Nonlinear Fluctuating Hydrodynamics in One Dimension: the Case of Two Conserved Fields
• Kinetic modelling of runaway electrons in dynamic scenarios
• Velocity Relaxation in a Strongly Coupled Plasma
• The Effect of Correlations on the Heat Transport in a Magnetized Plasma
• Anomalous dynamical scaling in anharmonic chains and plasma models with multiparticle collisions
• Stochastic effects in real and simulated charged particle beams
• Plasma rotation from momentum transport by neutrals in tokamaks
• Normal heat conductivity in two-dimensional scalar lattices
• Runaway-electron formation and electron slide-away in an ITER post-disruption scenario

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