期刊
JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 11, 页码 -出版社
SPRINGER
DOI: 10.1007/JHEP11(2012)030
关键词
Scattering Amplitudes; Nonperturbative Effects; Renormalization Group
资金
- DOE [DE-FG02-92ER40716]
- Marie Curie Grant [PIRG-GA-2009-256313]
We point out that the scenario for UV completion by classicalization, proposed recently is in fact Wilsonian in the classical Wilsonian sense. It corresponds to the situation when a field theory has a nontrivial UV fixed point governed by a higher dimensional operator. Provided the kinetic term is a relevant operator around this point the theory will flow in the ID to the free scalar theory. Physically, classicalization, if it can he realized, would correspond to a situation when the fluctuations of the field operator in the UV are smaller than in the IR. As a result there exists a clear tension between the classicalization scenario and constraints imposed by unitarily on a quantum field theory, making the existence of classicalizing unitary theories questionable.
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