We study the solutions of the salpeter equation for 0^(-) mesons of equal mass quark-antiquark.A potential which was derived in our previour paper in quantum chromodynamics in the background fields is used as the kern...We study the solutions of the salpeter equation for 0^(-) mesons of equal mass quark-antiquark.A potential which was derived in our previour paper in quantum chromodynamics in the background fields is used as the kernel.It includes the perturbative interaction of one gluon exchange and the nonperturbative corrections induced by the quark condensate and the gluon condensate.The results for m_(π),m_(ηc) and m_(ηb) are quite reasonable.展开更多
In this article,the nonvanishing vacuum average value of two-point function of gluons <Ω|A_(μ)^(a)(x)A_(v)^(b)(y)|Ω>,which is related to the quantitative analyses of the nonperturbative effects in quantum chr...In this article,the nonvanishing vacuum average value of two-point function of gluons <Ω|A_(μ)^(a)(x)A_(v)^(b)(y)|Ω>,which is related to the quantitative analyses of the nonperturbative effects in quantum chromodynamics(QCD)f is expanded in the'space-time interval τ=x-y in the JLorentz gauge.The first two coefficient values are estimated with the phenomenological values for the vacuum condensates<Ω|G^(2)|Ω> and <Ω|ψψ|Ω> through the QCD motion equations.The advantage of the expansion is that the series remains translationaily invarian£as compared with the expansion of〈Ω|A_(μ)^(a)(x)A_(v)^(b)(y)Ω> in the fixed-point gauge.展开更多
基金Supported by the National Natural Science Foundation of China.
文摘We study the solutions of the salpeter equation for 0^(-) mesons of equal mass quark-antiquark.A potential which was derived in our previour paper in quantum chromodynamics in the background fields is used as the kernel.It includes the perturbative interaction of one gluon exchange and the nonperturbative corrections induced by the quark condensate and the gluon condensate.The results for m_(π),m_(ηc) and m_(ηb) are quite reasonable.
基金Supported by the National Natural Science Foundation of China.
文摘In this article,the nonvanishing vacuum average value of two-point function of gluons <Ω|A_(μ)^(a)(x)A_(v)^(b)(y)|Ω>,which is related to the quantitative analyses of the nonperturbative effects in quantum chromodynamics(QCD)f is expanded in the'space-time interval τ=x-y in the JLorentz gauge.The first two coefficient values are estimated with the phenomenological values for the vacuum condensates<Ω|G^(2)|Ω> and <Ω|ψψ|Ω> through the QCD motion equations.The advantage of the expansion is that the series remains translationaily invarian£as compared with the expansion of〈Ω|A_(μ)^(a)(x)A_(v)^(b)(y)Ω> in the fixed-point gauge.
