DIQUARK AND △-N MASS DIFFERENCE IN LATTICE GAUGE THEORY

We show that the spontaneous breaking of the chiral symmetry provides a mechanism for lowering the effective mass of spin zero diquark.relative to spin one diquark.This mechanism accounts for the main part of △-N mass difference. Lattice calculation is consistent with the quark-diquark structure of the nucleon.     

THEORY OF SOLITON GENERATION AND LATTICE RELAXATION IN POLYACETYLENE (Ⅰ) GENERAL FORMALISM

This series of papers is devoted to the theory of soliton and polaron generation in polyacetylene by both radiative and non-radiative processes. In the first paper of this series a general formalism is presented which combines the Lattice relaxation approach for the multiphonon process developed by Huang and many others with the consistency condition in terms of the Bogoliubov-de Gennes equation and the gap equation. The exact adiabatic electron wave functions consistent with the different lattice syimnetry breaking in the initial and final states are used to calculate the transition probability between these multi-electron states. The formalism presented is illustrated by deriving a general expression for the non-radiative decay rate using the steepest descent method in the case of stronc coupling. The theory developed here canbe applied to treating the quantum. transitions between states of differnet symmetry breaking when the multi-electron background effect and the consistency condition are essential.The applications of the general formalism to polyacettyene and the comparison with numerical results and the recent experiments tvi11 be given in the succeeding papers.     

THEORY OF SOLITON GENERATION AND LATTICE RELAXATION I N POLYACETYLENE (Ⅱ) NOR-RADIATIVE TRANSITIONS

This is the second paper in a series devoted to the theorq of soliton and polaron generation in polyacetykne by both radiative and non-radiative processes. The general formalism presented in the first paper of this series which combines the lattice relaxatipn theory of multiphonon processes with the adiabatic self-consistency condition in terms of the Bogoliubovde Gennei equation and the gap equatibn, is applied in this paper to explicit calculation of the non-radiative decay rate of an electron(ho1e) into a plaron and that of an electron-hole pair into a soliton pair in plyacetylene. A heuristic derivation for the formula of non-radiative decay rate is given to elucidate the physical meaning of the approximation invol-ved in the case of low temperature and strong coupling. The matrix elements between multi-electron states are estimated in the Hartree approximation using the single electron states obtained as solutions of the Bogoliubov-de Gennes equation. The result obtained is compared with the numerical calculations on a discrete model.     

CANONICAL QUANTIZATION OF GAUGE FIELDS(Ⅱ)——SPONTANEOUSLY BROKEN GAUGE FIELDS

In R_ξ gauges a SU（2）spontaneonly broken gauge theory is qnantized within the canonical formalism,and the gauge compensating term is derived.     

TURNING-POINT CONVERGENCE-ZONES IN UNDERWATER SOUND CHANNELS(Ⅱ)A GENERALIZED RAY THEORY

A generalized ray solution,which can be used for calculating the acoustic fields near the causticsand turning points,is obtained by using a generalized phase-integral approximation.This solutionhas a clear physical picture and is convenient for the numerical calculation.The caustic structure andthe intensity distribution at the turning-point convergence-zones in underwater sound channels arediscussed in detail,and the simple and widely applicable intensity expressions are given.The theo-retical analysis shows that for high-pass signals and narrow-band signals,the signals received at theturning-point convergence-zones have the same waveform as the emitted signal or its Hilbert transform.     

IMPROVEMENT OF THERMODYNAMICAL MONTE CARLO SIMULATION IN SU(2) PURE GAUGE FIELD THEORY ——AN APPROACH TO CONTINUUM PHYSICS LIMIT

The thermodynamical quantities of SU(2) pure lattice gauge field have been simulated first time on the asymmetric lattice (ξ>1).The finite size effect and continuum physics limits have also been studied.The results show that the use of asymmetric lattice is of benefit to calculate the thermodynamical quantities and study the behavior of continuum physics limits.In addition,it is explained that the efficiency of the whole Monte Carlo simulation and the calculation of heat capacity will be improved quite a lot by using bias sampling technique.     

THE QUARK CLUSTER MODEL OF NUCLEAR FORCE:(Ⅱ) QUARK CONFINEMENT POTEPNTIAL AND COLOR VAN DER WAALS FORCE

The color-analog Van der Waals force between two hadrons is studied by the coupling channel resonating group method in the framework of the Gaussian-type quark confinement potential. The problem of the boundary values for the two channel coupling differential equations is changed to the problem of the initial values. The equations are solved numerically by the Gill method. The calculated results show that there is no color Van der Waals force between hadrons in the confinement potential model. This indicates that the confinement potential model not only can describe the internal structure of hadrons but also can be used to calculate the hadron-hadron interactions.     

COMPOSITE FIELD THEORY AND THE STRATON MODEL(Ⅱ)

On the basis of previous papers,this work discusses the theory of composite fields composed of colored stratons.Varicus equivalent representations of the S-matrix elements are given.The formulae for the transition matrix elements between states involving baryons in the theory of Straton Model are derived.Finally,the field- current relations are extended to spin 1/2 baryons and their applications are discussed.     

BALANCE EQUATION THEORY FOR HIGH-FIELD AND HIGH-FREQUENCY ELECTRONIC TRANSPORT IN TYPE-Ⅱ SUPERLATTICES

Balance equations are established for steadystate nonlinear electronic transport in the presence of an electric field in a type-Ⅱ superlattice, which is modelled by periodically arranged electron-hole bi-layers of finite thickness. Both carrier-phonon and carrier-impurity scatterings,as well as electron-hole interaction, are taken into account. The approach is also extended to the discussion of high-frequency linear transport of the system. The general equations-for determining the current density are obtained and the explicit expressions for complex dynarnical resistivity due to electron-hole coupling are given.     

SU(2)×SU(2) ELECTROWEAK THEORY IN LEP 1 DATA ON Z PARTICLE PRODUCTION

Recent data obtained by LEP1 are discussed and their potential implication for the existence of a Z particle. This letter advocates that this fits within the basic tenet of an SU(2)×SU(2) extended theory of the standard model of electroweak interactions. This extended electroweak model is motivated by nonabelian electrodynamics that provides an effective calculus for nonlinear optics.     

THE QUARK CLUSTER MODEL OF NUCLEAR FORCE:(Ⅰ) EXPONENTIAL QUARK CONFINEMENT POTENTIAL AND NON-STRANGE BARYONIC SPECTRUM

In this paper it is assumed that the quark-quark two-particle interaction is the Coulomb-like plus exponentially rising confinement potential.The non-strange baryonic spectrum below 2 GeV has been studied consistently by the potential.The calculated position of the resonanees and the predicted mixing angles are in good agreement with experiments. It is shown that the potential can describe successfully the properties of all the low-lying non-strange baryon states.The contribution of the spin-orbit coupling force to the spectrum has also been discussed.     

RELATIVISTIC SEMICLASSICAL THEORY OF CONDENSATION (Ⅰ)

Exact relations between the energy of a symmetric nuclear matter loaded in a classical π field and the value φ and wave number k of this π field were obtained for pseudoscalar coupling and pseudovector coupling. Results show that there is no π condensation under pseudoscalar coupling. If pseudovector coupling (which is not renormalizable) were permitted, π condensation emerges as a result of π nucleon P wave interaction, and the chiral symmetry is not necessary. π nucleon interaction itself leads to saturation of the condensed π field. Nonlinear selfinteractions of π field, such as φ⁴ term and so on, are not necessary. The influence of nucleonic repulsive core were considered under Yan der Waals approximation. It leads to upper and lower limits on wave numbers of the condensed π fields. If the radius of the repulsive core were larger than a critical value, π condesation becomes impossible again.     

CANONICAL QUANTIZATION OF GAUGE FIELDS (Ⅲ)——GRAVITATIONAL FIELD

The gravitational field is quantized within the canonical formalism under theharmonic gauge condition.The gravitational field is decomposed into transversalfields and self-commuting fields.The equation of motion of the self-commuting field X_μ is derived,and the contributions of self-commuting fields to physical S-matrixelements are investigated.Then the gauge compensating term of the effective actionis obtained.The result is in agreement with that obtained by the path integral method,but with our method the difficulty of the Gribov gauge ambiguity can be overcome.     

CANONICAL QUANTIZATION OF GAUGE FIELDS (I)——THE YANG-MILLS FIELD

The Yang-Mills field is quantized within the canonical formalism in covariant gauges. The interaction Lagrangian of X and X', i.e. the unphysical components of A_μ, is studied. In this Lagramgian there is only one term contributing to the S matrix elements between physical states. It is the source of the breaking of the unitarity of the physical S matrix. We get the gauge compensating term by solving a simple functional differential equation. If the gauge compensating term is added to the action, the S matrix in the physical state vector space can be expressed in a form which has no couplings of physical and unphysical particles, and so the physical S matrix is gauge independent and unitary.     

SINGLET DEUTERON INTERMEDIATE STATE IN d-d FOUR-BODY BREAKUP REACTION (Ⅱ)

At C.M. angles 90°and 64°two-dimensional spectra of protons emitted from singlet deuterons were measured under such geometry where the kinematic ambiguty was small. From the data it is obtained that the breakup energy E_B of the singlet deuteron state is (52+21)keV.     

CALCULATION OF((?)v~E/(?)P)s AND ULTRASONIC VELOCITIES IN SEVEN TERNARY LIQUID MIXTURES

The formula for sound velocity in a mixture of weak interaction is used to calculate the soundvelocities in seven ternary systems.The result shows that the calculated and experimental valuesof sound velocity are in good agreement.The result given in this article also shows that the largenegative value of excess isentropic compressibility does not always indicae of the ternaryliquid mixture would have correspondingly large positive value.     

HEAVY ION COLLISION DYNAMICS IN FERMI DOMAIN (Ⅱ) DYNAMICS DEPENDENCE OF IMPACT PARAMETER

The peripheral collision mechanisms have been systemic ally studied via the Boltzmann-Uehling-Uhlenbeck theory in the Fermi domain for ²⁰Ne+²⁰Ne collision system.The characters of energy dependence and the intermediate mass fragment production in the process of incomplete deep inelastic collision were discussed.     

β FUNCTION FOR SU(2)×SU(2) CHIRAL MODEL ON 2-DIMENSIONAL RANDOM TRIANGLE LATTICE

The β function behavior for SU(2)×SU(2) chiral model on 2-dimensional random triangle lattice has been studied with Monte Carlo renormalization group method.Its behavior is similar to that of the 4-dimensional SU(2) gauge theory.However,it is smoother from weak to strong coupling regions.There is no nonperturbative peak structure.The asymptotic scaling starts beyond β=1.6.     

氨基葡萄糖及羧甲基氨基葡萄糖与铁(Ⅱ)、锌(Ⅱ)、钴(Ⅱ)、铜(Ⅱ)配合物的光谱特征

本文研究了氨基葡萄糖及羧甲基氨基葡萄糖分别与铁（Ⅱ）、锌（Ⅱ）、钴（Ⅱ）、铜（Ⅱ）形成配合物的UV，IR和^1H-NMR光谱特征。配合物紫外的λmax发生了明显紫移；在IR谱中，配合物的面外振动峰655cm^-1较未配位的氨基葡萄糖中的面外振动峰670cm^-1低，且在990cm^-1附近出现新的吸收峰；在^1H-NMR谱中，配合物C3上羟基中的质子化学位移较未配位的均移向高场，氨基上质子的化学位移较未配位的也移向高场，其他碳上羟基中的质子化学位移值不变，从而初步证实了配合物中的氨－金属（N－M）键的形成。本文还研究了羧甲基氨基葡萄糖及其与铁（Ⅱ）、钴（Ⅱ）、铜（Ⅱ）配合物的合成。其配合物的IR谱线较未配位的IR谱线并没增多，指出这种反常现象是糖环的刚性所致。它们的IR和UV光谱均证实了分子中不存在游离的羰基峰，并证实了它们分子中内盐的存在，配合物的IR谱中出现新的一组吸收峰：433.1和408.9cm^-1(O-Fe)，507．1和495．0cm^-1（O－Co),403.1和389.0cm^-1(O-Cu)，证实了配合物中的氧－金属键（O－M）的形成。     

离子溅射(Ⅱ)

三、合金和化合物的溅射［２,２１－２３］１．择优（ｐｒｅｆｅｒｅｎｔｉａｌ）溅射现象对合金、化合物的溅射与前面所述的对单质的溅射具有十分显著的差别．首先,即使同种原子。由单原子固体变为多种原子固体后,溅射产额也将发生十分显著的变化,这种现象在结合状态发生了很大变化的氧化物等中可以明显地看到．再者．构成固体的每种元素,溅射产额都不相同。所以被溅射固体的表面成分和溅射之前相比,发生了变化,这就是?...