Transition of Collisionles Ion-Temperature-Gradient-Driven Plasma Turbulence: A Dynamical Systems Approach.

Kolesnikov, R. A. ; Krommes, J. A.

Technical Information Center Oak Ridge Tennessee

关键词: Plasma;    Turbulence;    Excitation;    Collisionless plasmas;    Zonal flows;   

RP-ID  :  DE2005835931

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

Resummation of the chiral expansion is necessary to make accurate contact with current lattice simulation results of full QCD. Resummation techniques including relativistic formulations of chiral effective field theory and finite-range regularization (FRR) techniques are reviewed, with an emphasis on using lattice simulation results to constrain the parameters of the chiral expansion. We illustrate how the chiral extrapolation problem has been solved and use FRR techniques to identify the power-counting regime (PCR) of chiral perturbation theory. To fourth-order in the expansion at the 1% tolerance level, we find 0 (le) m(sub (pi)) (le) 0.18 GeV for the PCR, extending only a small distance beyond the physical pion mass.