Can one cure the nommitarity of three-dimensional quadratic gravity using a topological Chern-Simons term?

被引：0
|
作者：
Accioly, A [1 ]
机构：
[1] Univ Estadual Paulista, Inst Fis Teor, BR-01405000 Sao Paulo, SP, Brazil
来源：
NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS | 2004年 / 127卷
关键词：
D O I：
10.1016/S0920-5632(03)02407-1
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
Quadratic gravity in (2+1)D is nonunitarity at the tree level. When a topological Chern-Simons term is added to this theory, the harmless massive scalar mode of the former gives rise to a troublesome massive spin-0 ghost, while the massive spin-2 ghost is replaced by two massive physical particles both of spin-2. Therefore, unlike what it is claimed in the literature, quadratic Chern-Simons gravity in (2+1)D is nonunitary at the tree level.
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页码：100 / 104
页数：5
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