We introduced the Lennard-Jones potential into the two-dimensional Collins model system.The additional potential energy has been derived for two-dimensional solid.According to the classical statistics,the Lindemann co...We introduced the Lennard-Jones potential into the two-dimensional Collins model system.The additional potential energy has been derived for two-dimensional solid.According to the classical statistics,the Lindemann coefficient δ_(c) of this system is calculated along the melting line.The calculated results shows that the value ofδc approximates to 0.08,which is in agreement with one of the rare gas solids in the order of magnitude.展开更多
We calculated the decay constant and radius of the pion in the framework of the Bethe-Salpeter equation with the vector-vector-type flat-bottom potential.The calculated results,f_(π)=102MeV and<r_(π)^(2)>^(1/2...We calculated the decay constant and radius of the pion in the framework of the Bethe-Salpeter equation with the vector-vector-type flat-bottom potential.The calculated results,f_(π)=102MeV and<r_(π)^(2)>^(1/2)=0.632fm,are close to experimental values of f_(π)=93 MeV and<r_(π)^(2)>^(1/2)=0.663±0.023fm.展开更多
The calculation model of the large bipolaron binding energy proposed by Verbist et al.is extended to arbitrary dimensions including fractal dimensions.It is found that the fractal dimension D=1.25 corresponds to the l...The calculation model of the large bipolaron binding energy proposed by Verbist et al.is extended to arbitrary dimensions including fractal dimensions.It is found that the fractal dimension D=1.25 corresponds to the lowest critical coupling constantα_(c)=1.9,D=1.73 corresponds to the highest critical ratio of dielectric constantsη_(c)=0.163,and when D≤1.145 bipolarons can not exist for any coupling constants and ratios of dielectric constants.展开更多
As is well known, the relatively low critical current density J_c and the serious flux motion limit a variety of applications of high-temperature superconductors (HTSCs). The introduction
文摘We introduced the Lennard-Jones potential into the two-dimensional Collins model system.The additional potential energy has been derived for two-dimensional solid.According to the classical statistics,the Lindemann coefficient δ_(c) of this system is calculated along the melting line.The calculated results shows that the value ofδc approximates to 0.08,which is in agreement with one of the rare gas solids in the order of magnitude.
文摘We calculated the decay constant and radius of the pion in the framework of the Bethe-Salpeter equation with the vector-vector-type flat-bottom potential.The calculated results,f_(π)=102MeV and<r_(π)^(2)>^(1/2)=0.632fm,are close to experimental values of f_(π)=93 MeV and<r_(π)^(2)>^(1/2)=0.663±0.023fm.
基金Supported by the National Nonlinear Science Foundation.
文摘The calculation model of the large bipolaron binding energy proposed by Verbist et al.is extended to arbitrary dimensions including fractal dimensions.It is found that the fractal dimension D=1.25 corresponds to the lowest critical coupling constantα_(c)=1.9,D=1.73 corresponds to the highest critical ratio of dielectric constantsη_(c)=0.163,and when D≤1.145 bipolarons can not exist for any coupling constants and ratios of dielectric constants.
文摘As is well known, the relatively low critical current density J_c and the serious flux motion limit a variety of applications of high-temperature superconductors (HTSCs). The introduction
