Superrenormalizable quantum gravity with complex ghosts

被引：127

作者：

Modesto, Leonardo ^{[1
,2
]}

Shapiro, Ilya L. ^{[3
,4
,5
]}

机构：

[1] Fudan Univ, Dept Phys, Shanghai 200433, Peoples R China

[2] Fudan Univ, Ctr Field Theory & Particle Phys, Shanghai 200433, Peoples R China

[3] Univ Fed Juiz de Fora, Dept Fis ICE, BR-33036900 Juiz De Fora, MG, Brazil

[4] Tomsk State Pedag Univ, Tomsk 634041, Russia

[5] Tomsk State Univ, Tomsk 634041, Russia

来源：

PHYSICS LETTERS B | 2016年 / 755卷

关键词：

Quantum gravity; Higher derivatives; Complex poles; FIELD-THEORY; ASYMPTOTIC FREEDOM; UNITARITY; RENORMALIZABILITY;

D O I：

10.1016/j.physletb.2016.02.021

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We suggest and briefly review a new sort of superrenormalizable models of higher derivative quantum gravity. The higher derivative terms in the action can be introduced in such a way that all the unphysical massive states have complex poles. According to the literature on Lee-Wick quantization, in this case the theory can be formulated as unitary, since all massive ghosts-like degrees of freedom are unstable. (C) 2016 The Authors. Published by Elsevier B.V.

引用

页码：279 / 284

页数：6

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