Solving the Bars-Green equation for moving mesons in two-dimensional QCD
文献类型：期刊论文
| 作者 | Li LJ(李留记); Liang SR(梁爽然) ; Jia Y(贾宇); Xiong, Xiaonu; Li, Liuji; Liang, Shuangran; Jia, Yu
|
| 刊名 | JOURNAL OF HIGH ENERGY PHYSICS
 |
| 出版日期 | 2017 |
| 期号 | 11页码:151 |
| 关键词 | 1/N Expansion Field Theories in Lower Dimensions |
| ISSN号 | 1029-8479 |
| DOI | 10.1007/JHEP11(2017)151 |
| 文献子类 | Article |
| 英文摘要 | The two-dimensional QCD in the large N limit, generally referred to as the 't Hooft model, is numerically investigated in the axial gauge in a comprehensive manner. The corresponding Bethe-Salpeter equation for a bound q (q) over bar pair, originally derived by Bars and Green in 1978, was first numerically tackled by Li and collaborators in late 1980s, yet only for the stationary mesons. In this paper, we make further progress by numerically solving the Bars-Green equation for moving mesons, ranging from the chiral pion to charmonium. By choosing several different quark masses, we computed the corresponding quark condensates, meson spectra and their decay constants for a variety of meson momenta, and found satisfactory agreement with their counterparts obtained using light-cone gauge, thus numerically verifed the gauge and Poincare invariance of the 't Hooft model. Moreover, we have explicitly confirmed that, as the meson gets more and more boosted, the large component of the Bars-Green wave function indeed approaches the corresponding 't Hooft light-cone wave function, while the small component of the wave function rapidly fades away. |
| WOS关键词 | T-HOOFT MODEL ; CHIRAL SYMMETRY-BREAKING ; YANG-MILLS THEORY ; QUANTUM CHROMODYNAMICS ; 1+1 DIMENSIONS ; 1-N EXPANSION ; LIGHT-CONE ; GAUGE ; CONFINEMENT ; SYSTEMS |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000416355700005 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/284658]  |
| 专题 | 高能物理研究所_理论物理室 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Li LJ,Liang SR,Jia Y,et al. Solving the Bars-Green equation for moving mesons in two-dimensional QCD[J]. JOURNAL OF HIGH ENERGY PHYSICS,2017(11):151. |
| APA | 李留记.,梁爽然.,贾宇.,Xiong, Xiaonu.,Li, Liuji.,...&Jia, Yu.(2017).Solving the Bars-Green equation for moving mesons in two-dimensional QCD.JOURNAL OF HIGH ENERGY PHYSICS(11),151. |
| MLA | 李留记,et al."Solving the Bars-Green equation for moving mesons in two-dimensional QCD".JOURNAL OF HIGH ENERGY PHYSICS .11(2017):151. |
入库方式： OAI收割
来源：高能物理研究所
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