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
复制
发表时间:
2015
期刊:
影响因子:
5
通讯作者:
B. C. Rees
B. C. Rees
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Matthijs Hogervorst;S. Rychkov;B. C. Rees

文献摘要

参考文献

被引文献

相似文献

我们考虑自由相互作用标量场理论对非整数时空维度 d 的延续。我们发现这些理论中的相关函数必然与幺正性(或与欧几里得签名中的反射正性)不相容。特别是,除非 d 是正整数,否则理论包含负范数状态。这些负范数状态可以通过简单的正范数算子的算子乘积展开来获得,因此是该理论的一个组成部分。在威尔逊-费舍尔不动点,非幺正性导致复杂反常维度的存在。我们证明它们在 epsilon 展开式中已经处于领先地位。
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.
DOI: 10.1007/jhep05(2015)036
发表时间: 2015-02
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
3d Ising 的关键指数和共形引导的相关模型
DOI: 10.1007/jhep10(2014)042
发表时间: 2014
影响因子: 5.4
作者:
Gliozzi F
通讯作者: Gliozzi F