Zobrazeno 1 - 10
of 54
pro vyhledávání: '"Xiao-fu Lü"'
Autor:
Xiao-Fu Lü, Hua-Bin Zhou
Publikováno v:
Communications in Theoretical Physics. 61:359-364
On the basis of assuming that the narrow state X(3872) is a molecule state consisting of D-0 and (D) over bar (*0), we apply the Mandelstam generalization of the Gell-Mann-Low method to calculate the matrix element of quark current between the heavy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3cf2d35970121be43a02c0e5ebff6b7a
https://doi.org/10.1088/0253-6102/61/3/15
https://doi.org/10.1088/0253-6102/61/3/15
Publikováno v:
Communications in Theoretical Physics. 57:833-840
From Bethe-Salpeter equation, we deduce the equation which describes the two-body system consisting of a scalar meson and a vector meson. This equation is applied to investigate the exotic narrow state X(3872) assumed as a molecule state composed of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7fd7305b19f2e6c04c280a8227958673
https://doi.org/10.1088/0253-6102/57/5/14
https://doi.org/10.1088/0253-6102/57/5/14
Publikováno v:
Nuclear Physics A. 844:85c-94c
It is unavoidable to deal with the quark and gluon momentum and angular momentum contributions to the nucleon momentum and spin in the study of nucleon internal structure. However, we never have the quark and gluon momentum, orbital angular momentum
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d2fe9a9797d7e49c762f468fa3dc72ee
https://doi.org/10.1016/j.nuclphysa.2010.05.019
https://doi.org/10.1016/j.nuclphysa.2010.05.019
Publikováno v:
Chinese Physics Letters. 22:3036-3039
In this letter it is shown on general ground that there exist two qualitatively distinct solutions of the Dyson-Schwinger equation for the quark propagator in the case of non-zero current quark mass. One solution corresponds to the ``Nambu-Goldstone'
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d7a18e384186734d71c0bb423f2fbf68
https://doi.org/10.1088/0256-307x/22/12/014
https://doi.org/10.1088/0256-307x/22/12/014
Autor:
Qing-Wu Wang, Xiao-Fu Lü
Publikováno v:
Communications in Theoretical Physics. 43:704-708
We investigate the neutron star magnetic field by the relative mean-field theory, where the photon effective mass depending on baryon density of charged particles is nonzero. This field is produced by star itself, which is the function of baryon dens
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::95471d8a3561ea06386578c88c645b61
https://doi.org/10.1088/0253-6102/43/4/025
https://doi.org/10.1088/0253-6102/43/4/025
Autor:
Han Chen, Xiao-Fu Lü
Publikováno v:
Communications in Theoretical Physics. 41:447-453
We investigate neutron star properties by constructing a chiral SU(3) spontaneous breaking Lagrangian and rising relativistic mean-field approximation. The results show that pi(-) condensate appears at some baryon densities, and hyperons Sigma(-) and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::10756d66ed8aaab77a05252ca4a0c7bb
https://doi.org/10.1088/0253-6102/41/3/447
https://doi.org/10.1088/0253-6102/41/3/447
Autor:
Lan-Fei Yang, Xiao-Fu Lü
Publikováno v:
Communications in Theoretical Physics. 37:589-592
In the GCM we study some properties of pi meson as the Goldstone bosons in a nuclear matter with finite density. Using the effective action in a nuclear matter, we calculate the decay constant and pi mass as functions of the chemical potential. The r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a1e39ceb2cd45e30429556469ee68082
https://doi.org/10.1088/0253-6102/37/5/589
https://doi.org/10.1088/0253-6102/37/5/589
Autor:
Jing-Wu Li, Xiao-Fu Lü
Publikováno v:
Communications in Theoretical Physics. 36:195-198
Using the chiral symmetry spontaneous breaking Lagrangian with mean-field approximation, we investigate the in-medium quark condensate . It is found that the condensate decreases as the nuclear matter density rho increases. Meanwhile, the desent devi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::232980624885895f3d1541da50acb1a8
https://doi.org/10.1088/0253-6102/36/2/195
https://doi.org/10.1088/0253-6102/36/2/195
Publikováno v:
Communications in Theoretical Physics. 35:451-454
Based on a modified version of the global color symmetry model, the pion susceptibilities of vacuum needed in the QCD sum rule external-field method for the coupling of pseudoscalar current to hadron have bean calculated beyond the vacuum saturation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::81502e44b9527c036f42d9cc80df6ab2
https://doi.org/10.1088/0253-6102/35/4/451
https://doi.org/10.1088/0253-6102/35/4/451
Publikováno v:
Communications in Theoretical Physics. 34:563-566
Based on a modification of the global color symmetry model, we have calculated the four-quark condensate [: (q) over bar gamma mu lambdaC degrees /2 q(q) over bar gamma mu lambdaC degrees /2 q :] beyond vacuum saturation approximation by including th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c1cdbd4b6534cd57561608bad0aa140f
https://doi.org/10.1088/0253-6102/34/3/563
https://doi.org/10.1088/0253-6102/34/3/563