规范场理论在中国——为祝杨振宁先生80大寿而作

文章记叙了20世纪70年代到80年代初期，规范场理论研究在中国的历史事实及杨振宁对中国物理理论研究的影响贡献，介绍了杨振宁对中国科学研究、教学的些论述和从中国规范场理论研究中可吸取的教训。     

SU（3）纯规范格点模型的累积展开研究

利用变分－累积展开方法，研究ＳＵ（３）纯规范格点模型的相结构，着重在于讨论累积展开在中间耦合区的适应性，从累积展开与关联长度的联系阐明了在中间耦合区高级次展开的必要性．采用几级展开对零级展开的修正为零的条件定几级计算中的变分参数，结果显示不仅在强、弱耦合区与蒙特卡罗符合很好，而且在中间耦合区随着近似级别的增高，可信的计算越来越逼近蒙特卡罗结果。     

SU(3)规范场的恰当形式(欧空间)

应用数学机械化方法讨论SU(3)规范场的规范化问题.首先提出一种具有明确几何意义的Yang-Mills方程,称其为恰当的Yang-Mills方程.然后构造了一类线性微分变换,称之为SU(3)规范场的示性变换,它具体给出联络和截面之间的微分关系.经由示性变换,将非线性的恰当的YM-方程变为一组线性Laplace方程,即实现了规范场YM-方程的线性化.从而证明了SU(3)规范场包括8个独立的Yang-Mills规范场.     

The Gauge of a Uniform Frame

This note characterizes gauge structures for frames, i.e., families of metric diameters which completely describe frame uniformities. Some applications are presented.     

强激光引起的固体材料的快速热应变的测量

介绍一种用温度自补偿电阻应变计测量激光引起的固体的快速热应变的方法,并对铝合金材料进行了实际测量。结果表明,用温度自补偿电阻应变计方法测量秒量级强激光辐照下固体材料的快速热应变是可行的。     

光干涉测气体浓度

光的干涉现象在科学研究与计量检测中有着广泛的应用．在矿山，应用光的干涉原理，可检测矿井中瓦斯、二氧化碳等有害气体的浓度，从而预防事故的发生．     

High pressure measurement with simple piston gauge in static condition

This paper describes the characterization of the newly developed piston gauge pressure standard at the National Physical Laboratory (NPL), with particular reference to its fall rate, engagement length of the piston and the deceleration rate for the measurement of hydraulic hydrostatic pressure up to 60 MPa. The low pressure effective area of the gauge derived from its dimensional measurements when compared with the value obtained by its direct calibration against NPL transfer pressure standard agrees within 0.025%. The pressure gauge is quite stable, reproducible and has a sensitivity of 3 ppm. Though the theoretically calculated value of the pressure coefficient is low as compared to the experimentally observed one in its absolute terms, the pressure dependent effective area agrees within ± 0.025% over whole of the pressure range which is well within the uncertainty statement of the two independent techniques used.     

General relations among observables in a large class of neutral-current processes mediated by one,two, or threeZ bosons

Without assuming any symmetry amongμ, e andτ leptons, we consider several neutral current processes involving 73 physical parameters and deduce general relations among them implied by different classes of gauge models with one, two and three neutralZ bosons. In the single-Z boson model there are 60 general relations while the two (three)-boson model leads to 48 (36) relations. If onlyμ-e universality is imposed, the physical parameters reduce to 41 and the single (two)-Z boson model yields 31 (22) relations, while only 13 relations exist for the threeZ boson model. Imposingμ-e-τ universality decreases the number of physical parameters to 18, while the number of relations in the single- and two-Z boson models reduces to 11 and 5, respectively. In these relations are contained those obtained by Hung and Sakurai and Parida and Rajasekaran in the corresponding cases. In addition we obtain some new inequalities among the observable parameters which are to be satisfied by all gauge models.     

On the algebraic geometry ofS-duality

This paper deals with algebro-geometric questions arising in the verification of theS-duality conjecture for supersymmetric Yang-Mills quantum field theories in the four-dimensional case. We describe all the cases for the gauge groups of rank 1 and 2, where the Gell-Man-Law beta-function is either zero or negative, and point out some series of such cases for gauge groups of arbitrary rank. Realization of one of these series on the complex projective plane demonstrates a relationship with exceptional bundles. Translated fromMatematicheskie Zametki, Vol. 61, No. 1, pp. 163–178, February, 1997. Translated by S. K. Lando     

反射式动栅光纤液位计的研究及应用

介绍反射式动栅光纤位移传感器的原理和利用补偿电路消除系统信号漂移的方法。在此基础上设计了用于轻苯贮罐的光纤液位计。