Constraints on Einstein-aether theory after GW170817

被引：120

作者：

Oost, Jacob ^{[1
]}

Mukohyama, Shinji ^{[2
,3
]}

Wang, Anzhong ^{[1
,4
]}

机构：

[1] Baylor Univ, GCAP CASPER, Phys Dept, Waco, TX 76798 USA

[2] Kyoto Univ, Yukawa Inst Theoret Phys, Ctr Gravitat Phys, Kyoto 6068502, Japan

[3] Univ Tokyo, Kavli Inst Phys & Math Universe WPI, Inst Adv Study, Kashiwa, Chiba 2778583, Japan

[4] Zhejiang Univ Technol, Inst Adv Phys & Math, Hangzhou 310032, Zhejiang, Peoples R China

来源：

PHYSICAL REVIEW D | 2018年 / 97卷 / 12期

基金：

中国国家自然科学基金; 日本学术振兴会;

关键词：

GRAVITY;

D O I：

10.1103/PhysRevD.97.124023

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In this paper, we carry out a systematic analysis of the theoretical and observational constraints on the dimensionless coupling constants c(i) (i = 1, 2, 3, 4) of the Einstein-aether theory, taking into account the events GW170817 and GRB 170817A. The combination of these events restricts the deviation of the speed c(T) of the spin-2 graviton to the range, -3 x 10(-15) < c(T) - 1 < 7 x 10-(16), which for the Einstein-aether theory implies vertical bar c(13)vertical bar <= 10(-15) with c(ij) equivalent to c(i) thorn c(j) + c(j) The rest of the constraints are divided into two groups: those on the (c(1), c(14))-plane and those on the (c(2), c(14))-plane, except the strong-field constraints. The latter depend on the sensitivities sigma(ae) of neutron stars, which are not known at present in the new ranges of the parameters found in this paper.

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