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arXiv 1603.03462hep-thgr-qchep-lathep-ph
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远离四维的共形规范-汤川理论

Conformal Gauge-Yukawa Theories away From Four Dimensions

Alessandro Codello, Kasper Langaeble, Daniel Litim, Francesco Sannino

摘要:

本文给出了$d=4+ε$维中一类Gauge-Yukawa理论的相图和相应的不动点。我们研究的理论涉及非阿贝尔规范场,费米子和标量在Veneziano-Witten极限。分析是分步骤进行的,我们从QCD $_d$开始,然后我们添加汤川相互作用和标量,我们研究的次-和次-领先的顺序。相互作用的红外固定点自然出现在低于四维的维度上,而紫外固定点则出现在四维以上。我们还分析了所发现的不动点的标量势的稳定性。我们认为,一个非常丰富的相图在三维空间,而在高于四个维度的某些规范汤川理论是紫外线完成,因为出现了一个渐近安全的不动点。

英文摘要:

We present the phase diagram and associated fixed points for a wide class of Gauge-Yukawa theories in $d=4+ε$ dimensions. The theories we investigate involve non-abelian gauge fields, fermions and scalars in the Veneziano-Witten limit. The analysis is performed in steps, we start with QCD$_d$ and then we add Yukawa interactions and scalars which we study at next-to- and next-to-next-to-leading order. Interacting infrared fixed points naturally emerge in dimensions lower than four while ultraviolet ones appear above four. We also analyse the stability of the scalar potential for the discovered fixed points. We argue for a very rich phase diagram in three dimensions while in dimensions higher than four certain Gauge-Yukawa theories are ultraviolet complete because of the emergence of an asymptotically safe fixed point.

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。

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