arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0803.2541hep-thastro-phhep-ph
收藏

强耦合规范理论中的凝聚

On Condensates in Strongly Coupled Gauge Theories

Stanley J. Brodsky, Robert Shrock

摘要:

本文对量子色动力学中夸克和胶子凝聚的性质提出了新的看法。我们认为,QCD凝聚的空间支持仅限于强子的内部,因为这些凝聚是由于禁闭夸克和胶子的相互作用而产生的。一个类比是与序参量,如库珀对凝聚和自发磁化实验测量有限样品中的凝聚态物理。我们的图像解释了最近的研究结果,没有发现真空胶子凝聚的显着信号。我们还对渐近自由矢量和手征规范理论中的凝聚作了一般性的讨论。

英文摘要:

We present a new perspective on the nature of quark and gluon condensates in quantum chromodynamics. We suggest that the spatial support of QCD condensates is restricted to the interiors of hadrons, since these condensates arise due to the interactions of confined quarks and gluons. An analogy is drawn with order parameters like the Cooper pair condensate and spontaneous magnetization experimentally measured in finite samples in condensed matter physics. Our picture explains the results of recent studies which find no significant signal for the vacuum gluon condensate. We also give a general discussion of condensates in asymptotically free vectorial and chiral gauge theories.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑