Conformal gauge-Yukawa theories away from four dimensions

被引:19
作者
Codello, Alessandro [1 ]
Langaeble, Kasper [1 ]
Litim, Daniel F. [2 ]
Sannino, Francesco [1 ,3 ]
机构
[1] Univ Southern Denmark, Origins CP3, Campusvej 55, DK-5230 Odense, Denmark
[2] Univ Sussex, Dept Phys & Astron, Brighton BN1 9QH, E Sussex, England
[3] Univ Southern Denmark, Danish IAS, Danish Inst Adv Study, Campusvej 55, DK-5230 Odense, Denmark
来源
JOURNAL OF HIGH ENERGY PHYSICS | 2016年 / 07期
基金
美国国家科学基金会; 新加坡国家研究基金会;
关键词
Field Theories in Higher Dimensions; Field Theories in Lower Dimensions; Renormalization Group; QUANTUM-FIELD THEORY; FIXED-POINTS; C-THEOREM; BEHAVIOR;
D O I
10.1007/JHEP07(2016)118
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
We present the phase diagram and associated fixed points for a wide class of Gauge-Yukawa theories in d = 4 + is an element of 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.
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页数:15
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