Calculation of tensor susceptibility beyond rainbow-ladder approximation of Dyson-Schwinger equations approach
| Autor: | Shi, Yuan-mei, Zhu, Hui-xia, Sun, Wei-min, Zong, Hong-shi |
|---|---|
| Rok vydání: | 2010 |
| Předmět: | |
| Zdroj: | Few Body Syst.48:31-39,2010 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1007/s00601-010-0088-6 |
| Popis: | In this paper, we extend the calculation of tensor vacuum susceptibility in the rainbow-ladder approximation of the Dyson-Schwinger (DS) approach in [Y.M.Shi, K.P.Wu, W.M.Sun, H.S.Zong, J.L.Ping, Phys. Lett. B $\bf{639}$, 248 (2006)] to that of employing the Ball-Chiu (BC) vertex. The dressing effect of the quark-gluon vertex on the tensor vacuum susceptibility is investigated. Our results show that compared with its rainbow-ladder approximation value, the tensor vacuum susceptibility obtained in the BC vertex approximation is reduced by about 10%. This shows that the dressing effect of the quark-gluon vertex is not large in the calculation of the tensor vacuum susceptibility in the DS approach. Comment: 14 pages, 13 figures |
| Databáze: | arXiv |
| Externí odkaz: |
|