1986年, 第5卷, 第2期　
刊出日期：1986-03-15

  

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  THE GENERALIZED DETAILED BALANCE FOR MASTER EQUATION WITHOUT THE STRICT DETAILED BALANCE

  胡岗

  理论物理通讯. 1986, 5(2): 99-104.

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  The generalized detailed balance is revealed for one-dimensional many-step master equation without the strict detailed balance.To the leading order of the system-size the one and only one stationary solution is identified.
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  THE EFFECTIVE Λ-α INTERACTION AND TEIE BINDING ENERGY OF Λ IN NYPERNUCLEUS

  石双合, 金星南

  理论物理通讯. 1986, 5(2): 105-112.

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  In this paper,the authors used the effective Λ-a interaction to calculhte more complex hypernucleus.The binding energy of Λ in hypernucleus _Λ⁹Be for K=6 and K=8 was calculated by means of the uncoupled adiabatic approximation.The numerical results were given.It is shown that the calculated results are quite satisfactory.
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  THIRD STRUCTURE FUNCTION IN TWO PHOTON PROCESSES AND GLUON PROPERTIES

  蓝志成, 李炳安

  理论物理通讯. 1986, 5(2): 113-122.

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  We show how the structure function W, for two photon scattering is related to gluon spin strongly. We also Show that due to triple gluon coupling W, can be calculated to o(g²) in perturbative QCD.
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  THE MESON DISTRIBUTION AMPLITUDE OF EXCLUSIVE PROCESSES IN QCD

  王新年, 项晓东, 黄涛

  理论物理通讯. 1986, 5(2): 123-133.

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  The behavior of the meson distribution amplitude is discussed through a phenomenological analysis of some exclusive processes in QCD.It is found that the pionicdistribution anplitirde at moderate energies is much broader than its asymptotic form and the broad distribution amplitude has to suppress the endpoint contribution to the process in order that the perturbative QCD contribution is dominant.In addition,a possible meson distribution amp1itude,which is a generalization of the harmonic oscillator model,is proposed.The results are compatible with experimental data.
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  PHASE STRUCTURE OF THE SU(2)-SO(3) LATTICE SYSTEM IN AN IMPROVED VARIATIONAL APPROACH

  王光伟, 薛社生, 冼鼎昌

  理论物理通讯. 1986, 5(2): 135-147.

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  An improved trial action in the variational approach of the lattice gauge field theory is in-troduced to acquire better lower bound for the convexity Inequality and used to calculate the phase structure of the SU(2)-SO(3) pure gauge system. The improvement is seen in comparing the old and new variational results with that by the Monte Carlo simulation.
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  A VARIANT FORM OF THE TAKHTAJAN EQUATION FOR THE HEISENBERG ISOTROPIC SPIN CHAIN

  黄念宁

  理论物理通讯. 1986, 5(2): 149-152.

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  A variant form of the Takhtajan equation for the continuous Heisenberg isotropic spin chain is given when the asymptotic spin is along the 1-axis.
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  PROTON-ANTIPROTON SCATTERING AT COLLIDER ENERGIES

  Mohammad Saleem, Fazal-e-Aleem, Muhammad Rafique

  理论物理通讯. 1986, 5(2): 153-157.

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  The recent measurements of differential and total cross sections, the ratio of the integrated and total cross sections and the values of the slope parameter at Collider energy have been simultaneously fitted for the first time by using a pole+cut model.
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  DOUBLE Ф-MESON PRODUCTION IN HADRONIC COLLISIONS

  李炳安, 沈齐兴

  理论物理通讯. 1986, 5(2): 159-165.

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  The longitudinal and transverse momenta distributions of Ф-meson in πp and pp collisions are calculated in Q²Q² picture. The longitudinal momentum distribution of Ф-meson is consistent with expecimental data.
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  A DISCUSSION ABOUT CUMULANT EXPANSION N ITHE LATTICE GAUGE THEORY

  吴济民, 赵佩英

  理论物理通讯. 1986, 5(2): 167-171.

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  We calculate SU(2) average plaquette energyp> in temporal gauge by using cumulant expansion in lattice gauge theory. Comparing with Refs.[3,4], the discontinuity moves to the point at β-7.It shows that this is not the proper singularity of the theory,but due to the fact that only finite terms of cumulant series are taken into account in calculations.
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  A RECURSION THEORY STUDY OF THE ELECTRONIC STRUCTURE OF METALLIC SUPERLATTICES

  徐云, 马红孺, 蔡建华

  理论物理通讯. 1986, 5(2): 173-177.

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  We illustrate that the recursion method is useful in the study of the electronic structure of metallic superlattices.It reduces considerably the amount of computational works,and gives,nevertheless,fairly satisfactory densities of states.
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  TWO-LOOP-FINITE SUPERSYPiP1ETRIC THEORIES OF SU(n)

  江向东, 周咸建

  理论物理通讯. 1986, 5(2): 179-185.

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  In this note we obtain all two-loop finite N=1 supersymmetric Yang-Mills theories of real representations of SU(n) as well as those of complex representations. There are a few candidates which can accommodate three generations of quarks and leptons.