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81.
THE EVIDENCE OF DECONFINEMENT PHASE TRANSITION OF SU(2) LATTICE GAUGE MODEL BY MONTE CARLO METHOD
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In this paper,we have calculated the SU(2) lattice gauge by the Monte Carlo method.For the finite temperature problem 83×4 lattice is used and for the zero temperature problem 84 lattice.From the calculations of the energy density,heat capacity and entropy density,the results indicate that there is a deconfinement phase transition when T/ΛL=40—50. 相似文献
82.
The distributions of dynamic variables in the deep inelastic scattering (DIS) of heavy-ions are studied by a direct simulation technique based on the single-nucleon-transfer-mechanism. The relative motion of the two collision partners is described by a Lagrange equation, and the transition probability of a single nucleon during the interaction time is calculated by the statisti-cal spectroscopy method.The occurrence of the transition event and the corresponding change of the dynamic variables are both treated randomly according to the transition probability. The calculated results for the reaction of 40Ar+58Ni(EL=280MeV) are compared with experimental data. 相似文献
83.
Exploration for Degradation of Λ Polarization Produced in Relativistic Nucleus Nucleus Collisions
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YE YunXiu CHEN Zhi RUAN TuNan SHEN Ji LV HaiJiang DONG WeiJiang SA BenHao TAI An 《中国物理C(英文版)》2000,24(2):125-130
The degradation of Λ transverse polarization produced in S+Pb central collisions at energy 200 GeV per nucleon has been studied in detail. The S+Pb central collision events have been generated using Monte-Carlo generator——LUCIAE at 200 GeV per nucleon. The various factors degrading Λ transverse polarization have been analysed quantitatively. The ratios of Λ′s produced from rescattering, secondary production and decays of Σ, Ξ hyperons to the total measurable Λ′s in experiment have been investigeted and the degradation effect of these Λ on the total polarization has been determined. The simulation and calculation show that above three factors decrease the Λ transverse polarization strongly, however, can not eliminate the polarization completely when the Λ′s are assumed to be produced from hadronic gas in the final state. To explan the experimental data of vanished Λ polarization, it probably needs to consider new mechanisms of Λ production, including a weak effect of QGP formation. 相似文献
84.
85.
Borodin V. G. Vatulin V. V. Zhidkov N. V. Elin I. P. Komarov V. M. Karasev V. V. Koltsov V. V. Malinov V. A. Migel V. M. Popikov V. S. Rimsky-Korsakov A. A. Suslov N. A. Charukhchev A. V. 《Physics of Atomic Nuclei》2019,82(12):1706-1713
Physics of Atomic Nuclei - The possibility of observing the stimulated de-excitation of nuclear isomers (SDENI) in plasma (plasma lifetime ∼1.5 ps, temperature of electrons ∼ 10 keV)... 相似文献
86.
P. A. Borodin A. A. Bukharaev D. O. Filatov D. A. Vorontsov M. A. Lapshina 《Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques》2009,3(5):721-724
Combined ultra-high vacuum scanning tunneling/atomic-force microscopy (STM/AFM) has been implemented for the first time for
the tunneling spectroscopy of the size-quantized states in the InAs/GaAs(001) surface quantum dots (QDs). The tunneling spectra
and current images, which reflect the energy and spatial distribution of the local density of the ground and excited states
in the QDs have been obtained. 相似文献
87.
We give a closed form for the correlation functions of ensembles of a class of asymmetric real matrices in terms of the Pfaffian
of an antisymmetric matrix formed from a 2 × 2 matrix kernel associated to the ensemble. We apply this result to the real
Ginibre ensemble and compute the bulk and edge scaling limits of its correlation functions as the size of the matrices becomes
large. 相似文献
88.
G. A. Kostin A. O. Borodin Yu. V. Shubin N. V. Kurat’eva V. A. Emelyanov P. E. Plyusnin M. R. Gallyamov 《Russian Journal of Coordination Chemistry》2009,35(1):57-64
Three new heteronuclear complexes [Ru(NO)(NO2)4(OH)M(Py)3] (M = Co2+, Ni2+, Zn2+) were synthesized and structurally characterized. In all compounds, the [Ru(NO)(NO2)4(OH)] fragment is coordinated to the M atom by a bridging OH and two bridging NO2 groups. The coordination environment of the metal also includes three pyridine nitrogen atoms. Thermal decomposition of cobalt
and nickel complexes in an inert atmosphere yields bimetallic solid solutions.
Original Russian Text ? G.A. Kostin, A.O. Borodin, Yu.V. Shubin, N.V. Kurat’eva, V.A. Emelyanov, P.E. Plyusnin, M.R. Gallyamov,
2009, published in Koordinatsionnaya Khimiya, 2009, Vol. 35, No. 1, pp. 57–64. 相似文献
89.
Starting with finite Markov chains on partitions of a natural number n we construct, via a scaling limit transition as n → ∞, a family of infinite-dimensional diffusion processes. The limit processes are ergodic; their stationary distributions, the so-called z-measures, appeared earlier in the problem of harmonic analysis for the infinite symmetric group. The generators of the processes are explicitly described. 相似文献
90.
基于尖晶石晶体结构信息,本文采用热力学三亚晶格模型,将材料热力学计算和第一性原理计算相结合,研究了Zn_xMn_(1-x) Fe_2O_4和Ni_xMn_(1-x)Fe_2O_4立方相中的Zn~(2+)、Ni~(2+)、Mn~(2+)以及Fe~(3+)在8a和16d亚晶格上的占位有序化行为。结果表明:在锰铁氧体中,室温下Mn~(2+)完全占据在8a亚晶格上,Fe~(3+)完全占据在16d亚晶格上,属于正尖晶石结构;随着热处理温度升高,在1 273 K达到热处理平衡时的占位构型为(Fe~(3+)0.09Mn~(2+)0.91)[Fe~(3+)1.91Mn~(2+)0.09]O_4,在热处理温度升至1 473 K时,达到热处理平衡时的占位构型为(Fe~(3+)0.11Mn~(2+)0.89)[Fe~(3+)1.89Mn~(2+)0.11]O_4,均与实验结果符合较好。在锌铁氧体中,室温下Zn~(2+)完全占据在8a亚晶格上,Fe~(3+)完全占据在16d亚晶格上,属于正尖晶石结构;在热处理温度较高时,Zn~(2+)和Fe~(3+)发生部分置换,符合实验结果。在镍铁氧体中,半数的Fe~(3+)在室温下占据在8a亚晶格上,Ni~(2+)与剩下另一半的Fe~(3+)共同占据在16d亚晶格上,仅在热处理温度较高的时候发生微弱变化,亦与已有的实验结果吻合。在此基础上,本文进一步通过热力学模型研究了立方相尖晶石结构的Zn_xMn_(1-x)Fe_2O_4、Ni_xMn_(1-x)Fe_2O_4复合体系中阳离子占位行为与热处理温度对占位的影响规律。 相似文献