Direct Determination of Dynamic Properties of Coulomb and Yukawa Classical One-Component Plasmas

[EN] Dynamic characteristics of strongly coupled classical one-component Coulomb and Yukawa plasmas are obtained within the nonperturbative model-free moment approach without any data input from simulations so that the dynamic structure factor (DSF) satisfies the first three nonvanishing sum rules automatically. The DSF, dispersion, decay, sound speed, and other characteristics of the collective modes are determined using exclusively the static structure factor calculated from various theoretical approaches including the hypernetted chain approximation. A good quantitative agreement with molecular dynamics simulation data is achieved.This research work was supported by Grants No. 0263/PTsF, No. 3119/GF4, No. 3120/GF4, and No. 3831/GF4 (Ministry of Education and Science, Kazakhstan), No. NKFIH 119357 and No. 115805 (National Research, Development and Innovation Fund, Hungary), the Jenos Bolyai Research Scholarship of the Hungarian Academy of Sciences (P.H.), Hungary, and Grant No. ESP2013-41078R (Ministerio de Economia y Competitividad, Spain). A.A. expresses gratitude for the financial support provided by the grant "The best lecturer of the Republic of Kazakhstan," and I.M.T. acknowledges the hospitality of the al-Farabi Kazakh National University and valuable discussions with M. Bonitz, I.L. Iosilevskiy, and Yu. A. Serebrennikov. Special thanks are due to Kh. Santybayev, who has helped us with the analysis of alternative approaches to the calculation of the SSF.Arkhipov, YV.; Askaruly, A.; Davletov, AE.; Dubovtsev, DY.; Donko, Z.; Hartmann, P.; Korolov, I.... (2017). Direct Determination of Dynamic Properties of Coulomb and Yukawa Classical One-Component Plasmas. Physical Review Letters. 119(4):045001-1-045001-6. doi:10.1103/PhysRevLett.119.045001S045001-1045001-6119