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In this paper we discuss the SU(3) limit of U(6/20) supersymmetry. First we derive the reduction formulas of the relevant group chain. Then we discuss the dynamical symmetry. Finally we make comparison between the theoretical calculation and experimental measurement in the case of nucleus .23592U143 相似文献
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THE PARTIALLY VIOLATED U(3) LIMITS OF THE DYNAMICAL SUPERSYMMETRY U(6/12) IN EUROPIUM-GADOLINIUM REGIONS 下载免费PDF全文
SHAO Yi-Ping 《中国物理C(英文版)》1987,11(3):392-396
The partially violated U(3) limits of the U(6/12) model is presented. The theoretical predictions are compared with existing experimental data of energy spectra and B(E2). The theory tallies with experiment fairly good. 相似文献
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The U(6/20) supersymmetry is discussed in this paper. Particularly we discuss its Spin (6) limit. First we discuss the reduction of the group chain of the Spin(6) limit. Secondly we derive the wave functions and excited energy formulas for the nuclei in which the Spin(6) limit of U(6/20) supersymmetry exists. Thirdly we make comparison of the nuclear energy spectra between the theoretical calculation and experimental measurement in the case of nucleus 77193Ir116. The comparison shows that the Spin(6) limit of U(6/20) supersymmetry possibly exists in nucleus 77193Ir116. 相似文献
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多普勒频移的普遍公式 总被引:6,自引:0,他引:6
考虑了时空变换与速度合成的相对论效应,一个普遍的纵向多普勒频移公式被导出,它对声波和光波均适用,讨论了几种典型情况,结果表明介质中光波多普勒频移,不仅同光源与接收器两者的相对速度有关,也与光源、光波自相对介质速度有关。 相似文献
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It is proved that under the Gelfand-Biedenharn phase convention any SUn singletfactor (SF) belongs to the type of the derivable or underivable,designated as (SUnSF)d and (SUr SF) respectively,and (SUn SF)d=(SUr SF),n=r+1,r+2,….Therefore the calculation of any SUn Clebsch-Gordan coefficients is reduced to thecalculation of a few underivable singlet factor (SUr SF). 相似文献
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Phase Structure of U(1) Lattice Gauge Theory by Variational Study with Independent Plaquette Effective Action 下载免费PDF全文
The average plaquette energy Ep of U(1) Lattice gauge theory in 3 dimensions with an independent plaquette effective action is calculated using the variational cumulant expansion.The E-β curve is continuous,which shows that U(1) theory has only one confine phase.Our result is consistent with Monte Carlo data. 相似文献
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Using the definition of irreducible tensor operators of the Lie group SU(n), we ive a method of calculating the irreducible representations of the graded Lie algebra U(m/n). We also give some simple examples of irreducible representations of U(3/2) and SU(m/n). 相似文献
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The continuous variable representation and the geometrical interpretation of the Elliott SU(3) model are given by virtue of the generator coordinate method. It is pointed out that the carrier subspace of collective states of the dynamical group SU(3) in the Elliott model is spanned by the β and γ vibration states as well as the rotation states. 相似文献
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The variational method in Lagrangian formalism has been applied to investigate the SU(3) Wilson model in lattice gauge theory. No phase transition point has been found. The result is in agreement with that obtained by Monte Carlo simulations. 相似文献
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GU CHAO-HAO 《中国物理C(英文版)》1978,2(4):295-304
Let F be a SUN gauge field on the space-time manifold M4, bλ(x) (λ=0,1, 2, 3) the gauge potentials, the field strengths and Q(x) a Higgs field. All quantities b, fλμ and Q(x) are SUN'-valued, i.e. they are represented by N×N anti-hermitian traceless matrices.Let M4' be the set of x such that Q(x)≠0 and define on M4', where The following results are obtained:Theorem 1. The 1st set of Maxwell equations Fλμ,v+Fμv,λ+Fvλ,μ=0 are satisfied for arbitrary bλ if and only if with Here s is an integer, 1≤s≤N-1.Suppose the conditions in theorem 1 are satisfied.Theorem 2. If s is a space-like two-dimensional surface, the value of dual charges contained in s defined by is equal to lq', where l is an integer and Theorem 3. The value of dual charges contained in S is equal to the integral which is independent of the gauge potentials.Theorem 4. The least positive value q' of dual charge can be attained by some Higgs fields.Remarks(a) When N=2, the results obtained are consistent with those of t Hooft, Arafune and Hou etc.(b) For N=3, we give an answer to the question of quantized values of dual charges which was discussed by Marciano and Pagels.(c) The Higgs field ø(x) is a mapping from M'4 into the AⅢ type symmetric space SUN/S(Us X UN-s) and the integral is an extension of Kronecker index for N=2. 相似文献
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In this paper a unified electro-weak model for leptons based on the SU(3) gaugegroup is suggested by means of four kinds of realization for the generators of thegroup. For all low energy electro-weak processes, this model predicts the same resultsas the conventional Weinberg-Salam model does. The Weinberg angle is shown to be sin2θw=1/4 in a natural way. When the Higgs self potential respects a discrete symme-try Φ→-Φ, a new conserved quantum number called weak strangeness emerges fromthe model after spontaneous symmetry breaking. In the present model there existanother four heavy vector gauge bosons V± and U±± together with some heavyfermions and Higgs scalars, which have non vanishing weak strangeness quantumnumbers. These weak strange particles have no direct couplings with leptons. Theirexistence will not influence the low energy electro-weak processes. Nevertheless, theycan be produced in pairs in high energy collisions and the lightest of them should bestable if the conservation of weak strangeness is exact. The experimental implicationsand the possibility of violation of the conservation of weak strangeness are also dis-cussed. 相似文献
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本文通过合流超几何函数的泰勒展开及微积分性质,导出了一个用级数形式表示的任意次幂径向坐标算符矩阵元与平均植计算的一般公式。 相似文献
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WANG Yong-Jiang 《中国物理C(英文版)》1988,12(1):19-22
By solving the constraint equations of two-loop finiteness another type of two-loop finite SU(5) ground unified model is given in this paper.There is only one pair of light Higgs doublet,and the other Higgs particles are all superheavy (~Mx).The ordinary CKM-mixing can be obtained only in the low energy region. 相似文献