Strict Limit on CPT Violation from Polarization of γ-Ray Bursts

被引：54

作者：

Toma, Kenji ^{[1
]}

Mukohyama, Shinji ^{[2
]}

Yonetoku, Daisuke ^{[3
]}

Murakami, Toshio ^{[3
]}

Gunji, Shuichi ^{[4
]}

Mihara, Tatehiro ^{[5
]}

Morihara, Yoshiyuki ^{[3
]}

Sakashita, Tomonori ^{[3
]}

Takahashi, Takuya ^{[3
]}

Wakashima, Yudai ^{[3
]}

Yonemochi, Hajime ^{[3
]}

Toukairin, Noriyuki ^{[4
]}

机构：

[1] Osaka Univ, Dept Earth & Space Sci, Toyonaka, Osaka 5600043, Japan

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

[3] Kanazawa Univ, Sch Math & Phys, Coll Sci & Engn, Kanazawa, Ishikawa 9201192, Japan

[4] Yamagata Univ, Fac Sci, Dept Phys, Yamagata 9908560, Japan

[5] RIKEN, Cosm Radiat Lab, Wako, Saitama 3510198, Japan

来源：

PHYSICAL REVIEW LETTERS | 2012年 / 109卷 / 24期

基金：

日本学术振兴会;

关键词：

PROMPT EMISSION; GRB; 041219A; ABOARD;

D O I：

10.1103/PhysRevLett.109.241104

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the strictest observational verification of CPT invariance in the photon sector, as a result of gamma-ray polarization measurement of distant gamma-ray bursts (GRBs), which are the brightest stellar-sized explosions in the Universe. We detected gamma-ray polarization of three GRBs with high significance levels, and the source distances may be constrained by a well-known luminosity indicator for GRBs. For the Lorentz- and CPT-violating dispersion relation E-+(2) = p(2) +/- 2 xi p(3)/M-Pl, where +/- denotes different circular polarization states of the photon, the parameter xi is constrained as vertical bar xi vertical bar < O(10(-15)). Barring precise cancellation between quantum gravity effects and dark energy effects, the stringent limit on the CPT-violating effect leads to the expectation that quantum gravity presumably respects the CPT invariance. DOI: 10.1103/PhysRevLett.109.241104

引用

页数：4

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