Multiparticle collision simulations of two-dimensional one-component plasmas: Anomalous transport and dimensional crossovers

Pierfrancesco Di Cintio, Roberto Livi, Stefano Lepri, and Guido Ciraolo
Phys. Rev. E 95, 043203 – Published 12 April 2017

Abstract

By means of hybrid multiparticle collsion–particle-in-cell (MPC-PIC) simulations we study the dynamical scaling of energy and density correlations at equilibrium in moderately coupled two-dimensional (2D) and quasi-one-dimensional (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 2D 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.

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  • Received 31 October 2016

DOI:https://doi.org/10.1103/PhysRevE.95.043203

©2017 American Physical Society

Physics Subject Headings (PhySH)

Plasma PhysicsStatistical Physics & Thermodynamics

Authors & Affiliations

Pierfrancesco Di Cintio1,2,3,*, Roberto Livi2,3,4, Stefano Lepri3,4, and Guido Ciraolo5

  • 1Consiglio Nazionale delle Ricerche, Istituto di Fisica Applicata “Nello Carrara” via Madonna del piano 10, I-50019 Sesto Fiorentino, Italy
  • 2Dipartimento di Fisica e Astronomia and CSDC, Universitá di Firenze, via G. Sansone 1, I-50019 Sesto Fiorentino, Italy
  • 3Istituto Nazionale di Fisica Nucleare, Sezione di Firenze, via G. Sansone 1, I-50019 Sesto Fiorentino, Italy
  • 4Consiglio Nazionale delle Ricerche, Istituto dei Sistemi Complessi via Madonna del piano 10, I-50019 Sesto Fiorentino, Italy
  • 5CEA, IRFM, F-13108 Saint-Paul-lez-Durance, France

  • *p.dicintio@ifac.cnr.it

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Issue

Vol. 95, Iss. 4 — April 2017

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