1988年, 第10卷, 第1期　
刊出日期：1988-07-30

  

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  OHMIC MOBILITY OF ELECTRONS IN SILICON

  徐婉棠, 丁秦生

  理论物理通讯. 1988, 10(1): 1-10.

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  Ohmic mobility of electrons in Si has been theoretically studied as a function of temperature. In our theoietical model many-valley structure of Si conduction band, intra-valley scattering of acoustic phonons and impurities and intervalley scattering of pholons and electrons were included. The Green's function approach developed by Lei and Ting was extended to evaluate the Trictional forces resulting from several scattering mechanisms. The numerical results compared with experimental data and indicated the effect of intervalley electron-electron interaction on the mobility of electrons.
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  THE CRITI CA ROPERTIES AND SCALING LAWS FOR CIRCLE MAP

  陈式刚, 王光瑞

  理论物理通讯. 1988, 10(1): 11-22.

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  In this paper, we investigate the laws of appearance of the chaotic motion when k≥1 for the circle map. We give the measures of the chaos and the scaling 1aws, by calculating the Lyapunov exponent and winding number for isometric points on Ω axis.
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  MEAN FLELD SOLUTION OF SLAVE BOSON THEORY TO A MIXED VALENCE Tm IMPURITY SYSTEM

  明志红, 董锦明, 林宗涵

  理论物理通讯. 1988, 10(1): 23-31.

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  We present a slave Boson Field Theory (SBFT) to a mixed valence Tm impurity system. The mean field equations are derived and the equilibrium properties of the mean field solution are obtained.
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  FORMATION AND EMISSION OF LIGHT PARTICLES IN FAST NEUTRON INDUCED REACTION——A UNIFIED COMPOUND PRE-EQUILIBRIUM MODEL(2)

  张竞上, 温源琪, 王书暖, 施向军

  理论物理通讯. 1988, 10(1): 33-44.

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  For fast neutron-induced reactions for structural"materials by using the unified compound pre-equilibrium model, the light composite particles emissions have to be oaken into account properly. The mechanism of cluster fororation and emission was investigated. Estimated results with considering the secondary emission process were compared with experimental data.
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  AN ALTERNATIVE APPROACH IN NUCLEAR DOUBLE BETA DECAY THEORY

  庆承瑞, 何柞庥

  理论物理通讯. 1988, 10(1): 45-51.

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  A new formula as a series of commutators of two axial vector currents and the nuclear Hamiltonian H_S derived for estimating the 2β-decay nuclear matrix element without using explicitly the closure approximation. With a simple assumption of the nuclear wave function and the Hamiltonian H_S, it is shown that the leading term in 2υ-2β decay matrix element vanishes and thus the smallness of 2υ-2β decay probability seems to be understood.
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  GRAND UNIFICATION WITH COMPOSITE HIGGS PARTICLES

  东方晓

  理论物理通讯. 1988, 10(1): 53-59.

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  we discussed an SU(7) grand unified theory with composite scalar particles in this paper. The SU_W(2) confinement model of weak interactions proposed by Abbott and Farhi is contained. We also discussed the effective theory of this model at low energy, which accommodates the SU(2)×U(1) standard model.
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  HIGH TEMPERATURE INTERQUARK POTENTIAL

  赵万云

  理论物理通讯. 1988, 10(1): 61-77.

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  The high temperature interquark potential within the framework of perturbation theory has been calculated up to the order g⁶. The result is that the quarks are unconfined at high temperature, which is consistent with the Monte Carlo study of the lattice gauge theory. The gluon magnetic mass relevance for the perturbative expansion is analysed. Since the magnetic mass of the gluon is at most of the order g²T, the high-temperatuze interquark potential can be calculates by of perturbation theory only up to the order g¹⁰.
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  PROLONGATION METHOD OF FINDING BACKLUND TRANSFORMATION AND LAX-PAIR OF ERNST EQUATION AND ERNST-MAXWELL EQUATIONS

  李有泉, 葛墨林

  理论物理通讯. 1988, 10(1): 79-103.

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  In this papsr all the known Backlund trans- formations of the Ernst equation are de}tved by ua}ing prolongation: method. As tile nonlinear realizationsp and infinite-dimensional linear realization for the prolongation structure are used, the inverse scattering equation (Lax-pair) is also derived. And the connection between BT and Lax-pair becomes evident. A systematic procedure for deriving the non-Linear realizations of the algebras is sugested based on the prolongation structure. The two knowniBackl and transformations as well as the Lax-pair of the Ernst-Maxwell equations are obtained bu the same method.
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  SUPER INTEGRABLE SYSTEMS AND ITS INFNITE CONSERVED CUKRENTS

  李栩神, 张历宁

  理论物理通讯. 1988, 10(1): 105-111.

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  The 3×3 super extended eigenvalue problem is considered. We deduce a class of completely integrable equations. Its reduced forms are givan and their infinite conserved currents have been discussed.
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  RF WAVE AND ELECTRIC CONDUCTIVITY IN A NON-UNIFORM PLASMA

  潘传红

  理论物理通讯. 1988, 10(1): 113-122.

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  Making use of Green's function method we have studied the RF wave effect on electric conductivity in a non-uniform plasma.The result: showed that after a RF wave injection the electric conductivity increases. If the non-uniformity is taken into account the enhanced value becomes larger.
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  EXCITATIONS OE SUPERLATTICE KITH A COMPLEX UNIT CELL AND EFFECT OF BACKGROUND DYNAMICS IN AN EXTERNAL MAGNETIC FIELD

  朱耘, 周世勋

  理论物理通讯. 1988, 10(1): 123-126.

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  A semiconductor superlattice with a complex unit cell in an external magnetic field is considered. The effect of background dynamics is also discussed.The cyclotron-acoustic plasmons have been investigated.