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Central nucleus-nucleus collisions at relativistic energies with a new method based on Random Matrix Theory

Chinese Physics C 2010年第8期34卷 1076-1081页

作者： Z.Wazir R.G.Nazmitdinov E.I.Shahaliev M.K.Suleymanov Department of Physics COMSATS Institute of Information Technology Department de Fisica Universitat de les Illes Balears bogoliubov Laboratory of theoretical Physics Joint Institute for Nuclear Research High Energy Physics Laboratory Joint Institute for Nuclear Research institute of Radiation problems

Using the method based on Random Matrix Theory （RMT）, the results for the nearest-neighbor distributions obtained from the experimental data on ^12C-C collisions at 4.2 AGeV/c have been discussed and compared with the simulated data on ^12C-C collisions at 4.2 AGeV/c produced with the aid of the Dubna Cascade Model. The results show that the correlation of secondary particles decreases with an increasing number of charged particles Nch. These observed changes in the nearest-neighbor distributions of charged particles could be associated with the centrality variation of the collisions.

关键词： random matrix theory experimental data Dubna cascade model central collisions

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Screening Breakdown for Finite-Range Gravitational Field and the Motion of Galaxies in the Local Group

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International Journal of Astronomy and Astrophysics 2016年第2期6卷 145-154页

作者： Yuri V. Chugreev Konstantin A. Modestov bogoliubov institute for theoretical problems of microphysics Lomonosov Moscow State University Moscow Russia Physics Department Lomonosov Moscow State University Moscow Russia National Research Moscow State University of Civil Engineering Moscow Russia

The lack of Birkhoff theorem in finite-range gravitation reveals nonzero acceleration of the test body inside the massive spherical shell, as well as breakdown of screening inside the charged conductor gives rise to acceleration of the test charge. An application of this effect to the motion of galaxies in Local Group allows to constraint quintessence parameter in some massive gravitational theories.

关键词： Mass of the Photon Mass of the Graviton Shell Screening Local Group of Galaxies Dark Energy Quintessence

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Recent progress in the physics of twisted particles

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The Innovation 2023年第3期4卷 87-88页

作者： Liping Zou Pengming Zhang Alexander J.Silenko Liang Lu Sino-French institute of Nuclear Engineering and Technology Sun Yat-sen UniversityZhuhai 519082China School of Physics and Astronomy Sun Yat-sen UniversityZhuhai 519082China bogoliubov Laboratory of theoretical Physics Joint Institute for Nuclear ResearchDubna 141980Russia institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China Research institute for Nuclear problems Belarusian State UniversityMinsk 220030Belarus

Twisted(vortex)particles with intninsicorbital angular momenta(OAMs)even in free space areof significant importancein modem physics and have important *** photons and electrons were discoveredin 1992 and 2010,*** maximum observed OAMs were about 10000 for photons and 1000h for ***,twisted neutrons,atoms,and molecules werealso *** magnetic field,charged particles move ina helicaltra-jectory(on acirclein the transverseplane).In thequantum-mechanical picture,a particle trajectory cannot bedefined,butits equations ofmotionareequivalentto the coresponding classical *** particles in free space are not under the influence of any external *** states appear as the coherent su-perpositions of noninteracting partial de Broglie waves with different directions of transverse momenta.

关键词： twisted transverse moment

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