1984年, 第3卷, 第4期　
刊出日期：1984-07-30

  

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  COMMENTS ON THE NEW NEUTRINO "BALANCE": A DISCUSSION OF THE FEASIBILITY OF USING THE ELECTRON CAPTURE PROCESS IN¹⁵⁸Tb, ¹⁵⁷Tb FOR NEUTRINO MASS DETERMINATION

  庆承瑞, 何祚庥, 刘嘉凌

  理论物理通讯. 1984, 3(4): 399-404.

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  It is found that owing to the large energy difference in K-and L-shells of the daughter atom, ¹⁵⁸Tb is not the best candidate for neutrino "balance". Instead, ^l57Tb can offer a better chance for. neutrino mass determination if the Q-value 55 far obtained is verified. If it is so,then the relevant atomic calculation with high precision is very necessary. It is shown that to include the radiative correction in the Hartree-Fock calculation is very important for such atoms as ¹⁵⁷Gd and ¹⁵⁷Tb.
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  CRITICAL PHENOMENON ANALOGIES IN SINGLE MODE ONE-PHOTON LASER SYSTEM WITH SATURABLE ABSORBER

  刘建民

  理论物理通讯. 1984, 3(4): 405-416.

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  Beginning with a more complete quantum-mechanical description of the single mode one-photon laser system with a saturable absorber and using the catastrophe theory, we discuss critical phenomenon analogies, namely exponent behaviors of the abrupt transitions between steady states near athresho1d; in the system. An isolated threshold with order θ=3 is found. Four threshold exponents β,δ,γ^′and α^′, and four threshold amplitudes B,D, I and A', in two various spaces of control parameters, are obtained. These threshold exponents obey the generalized scaling laws, e.g., α^′+(1+z)β+γ^′=2,of 2=4 or Z=2 depending on two various choices of the space of control parameters. The source for this departure of exponent behaviors from the usual scaling laws(z=l) is also discussed.
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  THEORY OF THESUCCESSIVE PHASE TRANSITIONS OF THIOUREA

  杨振青, 常树人

  理论物理通讯. 1984, 3(4): 417-421.

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  In this paper, a double-well potential model with variable zero-point is proposed, which can give a reasonable explanation to the five successive phases of thiourea, especially to the IC phase with ferroelectric order and the disordered C phase.
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  THE MODEL OF ATOMIC TUNNELING STATES AND THE ANOMALOUS UL.TRASONIC PROPERTIES IN AMORPHOUS SOLID FILMS

  陈鸿, 吴翔

  理论物理通讯. 1984, 3(4): 423-428.

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  The authors' previous work on the model of atomic tunneling states in amorphous solids is extended from a one-dimension model to a more realistic three-dimension model. Based on the model, the theoretical investigations on the effects of the two-level system (TLS) on the surface phonon in amorphous solid films have been made, and the results well agree with experiments.
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  PION INDUCED SEMI-COHERENT SCATTERING AND THE EXCITATION OF THE 9,5 MEV STATE OF ¹³c

  林春灿, 马维兴

  理论物理通讯. 1984, 3(4): 429-441.

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  Under Glauber approximation, the problem about the theoretical description of the excitation for the 9.5 MeV level of ¹³C in inelastic scattering π-¹³C is discussed. It is assumed that the transition to the 9.5 MeV level is a semi-coherent one step process. The weak couplinq nucleus model was used for initial and final nucleus structure. Based on assumption J = Γ⁺/2 and approximation Γ^(V) =1/2Γ^(S), the differential cross section of the inelastic scattering ¹³C(π^±,π^±1)¹³C^* (9.5MeV) at T_π^1ab=180 MeV was calculated and compared with existing data.
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  GENERAL HOLOMORPHIC FUNCTIONAL INTEGRAL AND ITS EVOLUTION TO THE FEYNMAN KERNEL

  范洪义, 阮图南

  理论物理通讯. 1984, 3(4): 443-456.

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  This paper is devoted to establishing the relation between the holomorphic form of the functional integral and its Feynman form, as well as presenting a new way to evaluate the Feynman transformation matrix element by using the coherent state. The Feynman kernel for the harmonic oscillator with two time-dependent sources is thus derived. Besides these, by the use of the normal product form of the Wigner operator derived in Ref.[l] and the Weyl correspondence, the general holomorphic form of the functional integral and its evolution to the Feynman kernel are discussed.
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  ARE THERE ANY REALISTIC SU(N) GRAND UNIFIED MODELS CONTAIN IHG FRACTIONALLY CHARGED PARTICLES?

  吴丹迪, 李铁忠

  理论物理通讯. 1984, 3(4): 457-463.

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  We have completed a systematic searching for realistic SU(N) grand particles. unified models containing fractionally charged The principles of constructing realistic models are originated from Georgi's with some changes on account of fractionally charged particles. We conclude that there are not any realistic models containing fractionally charged particles.
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  FERMION COHERENT STATE AND QUARK CONFINEMENT

  陈琳, 李洪才, 阮图南

  理论物理通讯. 1984, 3(4): 465-480.

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  Two characteristics of the Fermion coherent state are given in this paper. One is the duality of the Fermion coherent state. The other is the indefiniteness of their eigenvalues. The SLAC bag model is also discussed by using the Fermion coherent state methodology. Our zesults agree with the SLAC bounded state iolutions, so that quark confinement can be phenomenally, illustrated.In addition, rje have found a gluon-ball solution and a non-bounded state solution, which are absent from the SLAC theory. Hence,the method of the Fermion coherent state is effective.
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  THE VACUUM OF LATTICE GAUGE THEORY WITH FERMIONS AND SPONTANEOUS CHIRAL SYMMETRY BREAKING^*

  郭硕鸿, 陈启洲, 刘金明, 胡连

  理论物理通讯. 1984, 3(4): 481-489.

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  The vacuum structure of lattice gauge theory with femicns is studied by the variational method.The fermion condensate <ψψ> is given as a function of l/g².
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  THE UNIFIED SCHEME OF THE EFFECTIVE ACTION AND CHIRAL ANOMALIES IN ANY EVEN DIMEPISIONS

  周光召, 郭汉英, 李小源, 吴可, 宋行长

  理论物理通讯. 1984, 3(4): 491-498.

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  Based on the Weil homomorphism method, a unified scheme in which all the important topological ptoperties of the pseudoscalar Goldstone bosonand gauge fields. in even dimensional space are described, in one remarkably compact. form is given.These properties include the effective action, the skyrmion anomalous current, Abel'an anomaly, symmetric and asymmetric non-Abeliari chiral anomalies,and anomaly free conditions.
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  THE GAUGE INVARIANT WESS-ZUMINO ACTION FUNCTIONAL, CHIRAL ANOMALIES AND TOPOLOGY

  邝宇平, 李小源, 吴可, 赵志泳

  理论物理通讯. 1984, 3(4): 499-507.

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  The gauge invariant Wess-Zumino action functional in 2n dimensional space is obtained by properly constructing the manifestly gauge invariant (2n+1)-forms which satisfy the Abelian anomalous Ward identity in 2n+2 dimensional space. Apart from its simplicity, directness, the construction clearlu embodies the connections between the gauge invariant Wess-Zumino action functional, cniral anomalies and topology.
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  THE APPLICATIOEI OF TOMIMATSU-SAT0 METRIC TO THE GRAVITATIONAL FIELD OF ORDINARY SPINNING OBJECT

  徐效海

  理论物理通讯. 1984, 3(4): 509-515.

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  An expression of the Tomimatsu-Sato metric in the Schwarzschild coordinates is found. In it those small terms of 0(1/r³)are omitted. The resulting expression is applied to the description of gravitationa field of ordinary spinning objects such as the sun. The Landau-Lifshitz method used to find the deflection of light and precession of perihelia in the Schwarzschild field is generalized to the gravitational field of a spinning object. It is shown the expressions of the deflection of light and precession of perihelia in the Tomimatsu-Sato.field are the same as those in the Kerr field. Tomimatsu and Sato have conjectured that their metric is more appropriate for describing the gravitational field of ordinarg spinning object than Kerr metric. In order to check this conjecture one must consider the terms smaller than (1/r²).
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  IS ⁴⁰Ca A STABLE ISOTOPE?

  庆承瑞, 何祚庥, 赵维勤

  理论物理通讯. 1984, 3(4): 517-520.

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  It is shorn that the double magic nucleus ⁴⁰Ca is unstable with respect to the double K-electron capture ⁴⁰Ar. By using the shell model wave functions for both ⁴⁰Ca and ⁴⁰Ar, the lifetime of ⁴⁰Ca is estimated as 1.2×10³³yrs.
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  DIPOLE POMERON MODEL AND RECENT RESULTS ON PP ELASTIC SCATTERING

  Mohammad Saleem, Fazal-e-Aleem

  理论物理通讯. 1984, 3(4): 521-523.

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  The dipole pomeron model has been used t of it the recent differential cross section data for pp elastics cattering.
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  A GENERALIZATION OF THE GOLDHABER THEORY

  唐学田, 高良俊

  理论物理通讯. 1984, 3(4): 525-528.

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  The Goldhaber theory is generalized to the case of nuclei consisting of many kinds of components. Our generalization gives a correction to the momentum widths for non-symmetric puclei, and possibly is useful in treating fission and heavy-ion reaction problems.
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  INFINITE DIMENSIONAL EOSON-FERMION REPRESENTATIONS OF LIE SUPERALGEBRAS D(M,N)

  韩其志, 刘福绥, 孙洪洲

  理论物理通讯. 1984, 3(4): 529-532.

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  The Lie superalgebras D(M,N) are realized by creation and annihilation operators of bosons and fermions. The infinite-dimensional IR(irreducib1e representations) are constructed. These IR are star representations. And the IR are decomposed according to the superalgebra chain D(M,N)⊃A(M-1, N-1).