On Lorentz-invariant bispin-2 theories

被引：0
|
作者：
Kimura, Rampei [1 ]
Naruko, Atsushi [2 ]
Yamauchi, Daisuke [3 ]
机构：
[1] Waseda Univ, Waseda Inst Adv Study, Shinjuku Ku, 1-6-1 Nishi Waseda, Tokyo 1698050, Japan
[2] Kyoto Univ, Yukawa Inst Theoret Phys, Ctr Gravitat Phys, Kyoto 6068502, Japan
[3] Kanagawa Univ, Fac Engn, Kanagawa Ku, Yokohama, Kanagawa 2218686, Japan
来源：
PHYSICAL REVIEW D | 2021年 / 104卷 / 04期
基金：
日本学术振兴会;
关键词：
GRAVITATION; SYSTEMS;
D O I：
10.1103/PhysRevD.104.044021
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We investigate a Lorentz invariant action that is quadratic in two rank-2 symmetric tensor fields in Minkowski spacetime. We apply a scalar-vector-tensor decomposition to two tensor fields by virtue of three-dimensional rotation invariance of Minkowski spacetime and classify theories with 7 degrees of freedom based on the Hamiltonian analysis. We find two new theories, which cannot be mapped from the linearized Hassan-Rosen bigravity. In these theories, the new mass interactions can be allowed thanks to the transverse diffeomorphism invariance of action.
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页数：20
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