Unitarity violation at the Wilson-Fisher fixed point in 4-$\epsilon$ dimensions
Unitarity violation at the Wilson-Fisher fixed point in 4-$\epsilon$ dimensions
复制标题
4-$epsilon$ 维度中 Wilson-Fisher 不动点处的幺正性违规
DOI:
10.1103/physrevd.93.125025
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发表时间:
2015
影响因子:
5
通讯作者:
B. C. Rees
中科院分区:
文献类型:
--
作者:
Matthijs Hogervorst;S. Rychkov;B. C. Rees
We consider the continuation of free and interacting scalar field theory to noninteger spacetime dimension d. We find that the correlation functions in these theories are necessarily incompatible with unitarity (or with reflection positivity in Euclidean signature). In particular, the theories contain negative-norm states unless d is a positive integer. These negative-norm states can be obtained via the operator product expansion from simple positive-norm operators, and are therefore an integral part of the theory. At the Wilson-Fisher fixed point the nonunitarity leads to the existence of complex anomalous dimensions. We demonstrate that they appear already at leading order in the epsilon expansion.
影响因子:
5.4
作者:
F. Gliozzi;P. Liendo;M. Meineri;A. Rago
通讯作者:
F. Gliozzi;P. Liendo;M. Meineri;A. Rago
影响因子:
5.4
作者:
Gliozzi F
通讯作者:
Gliozzi F