现行的国际协作关系管理原则是协作工作需求和指导的方针,是由I SO/T C 286的国际专家开发和更新的。本文通过研究对比ISO/T C 286制定的关于协作业务关系管理的有关文件,分析协作业务关系管理国际标准现状,并将现行标准进行融合分析,...现行的国际协作关系管理原则是协作工作需求和指导的方针,是由I SO/T C 286的国际专家开发和更新的。本文通过研究对比ISO/T C 286制定的关于协作业务关系管理的有关文件,分析协作业务关系管理国际标准现状,并将现行标准进行融合分析,以预测国际标准发展趋势。展开更多
An improved XY model is adopted for the vortices in the superconductors.In the case of high density,the fugacity should be modified by the higher harmonics.By use of the variational effective potential,we analyze the ...An improved XY model is adopted for the vortices in the superconductors.In the case of high density,the fugacity should be modified by the higher harmonics.By use of the variational effective potential,we analyze the discontinuous phase transition for the dense vortices below the Kosterlitz-Thouless transition temperature.展开更多
The one-and two-particle states in the sinh-Gordon and sine-Gordon models in(1+1)dimensions are investigated by using the gaussian wave-functional approach.We find that(i)the renormalized mass parameter is just the va...The one-and two-particle states in the sinh-Gordon and sine-Gordon models in(1+1)dimensions are investigated by using the gaussian wave-functional approach.We find that(i)the renormalized mass parameter is just the variational one particle mass,and(ii)there are no two-particle bound states in the sinh-Gordon model,but in the sine-Gordon model,there exist two-particle bound states.展开更多
A simple derivation of the field theory of Ising quantum chain shows that the Ising model is equivalent to the free Majorana real spinor field.At the critical point,the field equation is conformally covariant.
The manifestly SO(4,2)invariant equation of second rank antisymmetric tensor field is got in 6-dimensional space with subsidiary conditions.These equations lead naturelly to conformally covariant field equation that w...The manifestly SO(4,2)invariant equation of second rank antisymmetric tensor field is got in 6-dimensional space with subsidiary conditions.These equations lead naturelly to conformally covariant field equation that we obtained in Minkowski space.展开更多
基金Supported by the National Natural Science Foundation of China.
文摘An improved XY model is adopted for the vortices in the superconductors.In the case of high density,the fugacity should be modified by the higher harmonics.By use of the variational effective potential,we analyze the discontinuous phase transition for the dense vortices below the Kosterlitz-Thouless transition temperature.
基金Supported by the Science Foundation of The Chinese Education Committee.
文摘The one-and two-particle states in the sinh-Gordon and sine-Gordon models in(1+1)dimensions are investigated by using the gaussian wave-functional approach.We find that(i)the renormalized mass parameter is just the variational one particle mass,and(ii)there are no two-particle bound states in the sinh-Gordon model,but in the sine-Gordon model,there exist two-particle bound states.
文摘A simple derivation of the field theory of Ising quantum chain shows that the Ising model is equivalent to the free Majorana real spinor field.At the critical point,the field equation is conformally covariant.
文摘The manifestly SO(4,2)invariant equation of second rank antisymmetric tensor field is got in 6-dimensional space with subsidiary conditions.These equations lead naturelly to conformally covariant field equation that we obtained in Minkowski space.
