期刊
JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 5, 页码 -出版社
SPRINGER
DOI: 10.1007/JHEP05(2021)075
关键词
Renormalization Group; Renormalization Regularization and Renormalons
资金
- Spanish MINECO/FEDER grant [PGC2018-095328-B-I00]
- DGA-FSE [2020-E21-17R]
- COST action [MP1405-37241, QGMM-CA18108]
- Short Term Scientific Mission (STSM), within the COST action [MP1405-37241]
Completing gauge theories with higher derivative terms in the ultraviolet can greatly alter their behavior at high energies. The presence of a large number of derivatives leads to strong interactions, while a low number maintains asymptotic freedom. Consistency issues associated with extra ghosts in higher derivative theories may not affect asymptotically free theories.
The ultraviolet completion of gauge theories by higher derivative terms can dramatically change their behavior at high energies. The requirement of asymptotic freedom imposes very stringent constraints that are only satisfied by a small family of higher derivative theories. If the number of derivatives is large enough (n > 4) the theory is strongly interacting both at extreme infrared and ultraviolet regimes whereas it remains asymptotically free for a low number of extra derivatives (n 4). In all cases the theory improves its ultraviolet behavior leading in some cases to ultraviolet finite theories with vanishing beta -function. The usual consistency problems associated to the presence of extra ghosts in higher derivative theories may not harm asymptotically free theories because in that case the effective masses of such ghosts are running to infinity in the ultraviolet limit.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据