The Aharonov–Bohm effect in noncommutative quantum mechanics

The Aharonov–Bohm effect in noncommutative (NC) quantum mechanics is studied. First, by introducing a shift for the magnetic vector potential we give the Schrödinger equations in the presence of a magnetic field on NC space and NC phase space, respectively. Then, by solving the Schrödinger equations, we obtain the Aharonov–Bohm phase on NC space and NC phase space, respectively.     

Wigner functions for the Landau problem in noncommutative quantum mechanics

We study the Wigner function in noncommutative quantum mechanics. By solving the time-independent Schrödinger equation on both a noncommutative space and a noncommutative phase space, we obtain the Wigner function for the Landau problem on those spaces.     

分波振幅和耦合常数

使用有效拉氏量法,我们对五个有趣的重子衰变道提供分拨振幅（PWA）及其衰变宽度。还有,通过粒子数据表上分支比（Branching ratio）进行拟合的,我们计算了核子-核子-介子耦合常数。     

Covariant tensor formalism for partial-wave analyses of ψ decays into γB¯, γγV and ψ(2s)↦γχ<Subscript>c0,1,2</Subscript> with χ<Subscript>c0,1,2</Subscript>↦K¯πand 2π<Superscript>+</Superscript>2π<Superscript>-</Superscript>

With accumulation of high statistics data at BES and CLEO-c, many new interesting channels can get enough statistics for partial-wave analysis (PWA). Among them, ψ↦γpˉ,γΛˉ,γΣˉ,γΞˉ channels provide a good place for studying baryon-antibaryon interactions; the double radiative decays ψ↦γγV with V ≡ ρ,ω,φ have a potential to provide information on the flavor content of any meson resonances (R) with positive charge parity (C = +) and mass above 1 GeV through ψ↦γR↦γγV; ψ(2s)↦γχ_c0,1,2 with χ_c0,1,2↦Kˉπ⁺π^- and 2π⁺2π^- decays are good processes to study χ_cJ charmonium decays. Using the covariant tensor formalism, here we provide theoretical PWA formulae for these channels.     

Evidence for a new resonance Σ~* (1380) with J~P=1/2~(-*)

A new particle Σ * with J P = 1/2-was predicted by unquenched quark models with its mass around the well established Σ * (1385) with J P = 3/2 + .Here we re-examine some old data of the K￣p→Λπ*π + reaction.Firstly we re-fit the data for kaon beam momenta in the range of 1.0 - 1.8 GeV.Secondly we study the reaction at the energies around Λ*(1520) peak.Both studies show evidence for the existence of Σ*with J P = 1/2-around 1380 MeV.Higher statistic data on relevant reactions are needed to clarify the situation.     

双荷粒子系统电四极和磁四极电磁辐射的双矢势对偶理论

利用电磁场四维双势法,首先给出了广义Maxwen和d'Alembert方程的解,并进-步给出了场强与四维双势的关系.然后利用有电荷存在时的d'Alembert方程推迟解.求出了带磁荷粒子和双荷粒子(Dyon粒子)的电磁辐射的表达式,并分别给出了电荷和磁荷所激发的电四极和磁四极辐射四维双矢势表达式.最后得到了双荷粒子电四极和磁四极辐射场表达式并对其物理性质进行了讨论.