A matter-antimatter universe?

被引：208

作者：

Cohen, AG

De Rujula, A

Glashow, SL

机构：

[1] Boston Univ, Dept Phys, Boston, MA 02215 USA

[2] CERN, Div Theory, CH-1211 Geneva 23, Switzerland

[3] Harvard Univ, Lyman Lab Phys, Cambridge, MA 02138 USA

来源：

ASTROPHYSICAL JOURNAL | 1998年 / 495卷 / 02期

关键词：

cosmology; theory; diffuse radiation; elementary particles; large-scale structure of universe;

D O I：

10.1086/305328

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We ask whether the universe can be a patchwork consisting of distinct regions of matter and antimatter. We demonstrate that, after recombination, it is impossible to avoid annihilation near regional boundaries. We study the dynamics of this process to estimate two of its signatures: a contribution to the cosmic diffuse gamma-ray background and a distortion of the cosmic microwave background. The former signal exceeds observational limits unless the matter domain we inhabit is virtually the entire visible universe. On general grounds, we conclude that a matter-antimatter symmetric universe is empirically excluded.

引用

页码：539 / 549

页数：11

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