Chiral symmetry and the cosmological constant

被引：4

作者：

Alexander, Stephon ^{[1
]}

Herczeg, Gabriel ^{[1
,2
]}

Liu, Jinglong ^{[1
,2
]}

McDonoug, Evan ^{[1
,2
]}

机构：

[1] Brown Univ, Brown Theoret Phys Ctr, 182 Hope St, Providence, RI 02903 USA

[2] Brown Univ, Dept Phys, 182 Hope St, Providence, RI 02903 USA

来源：

PHYSICAL REVIEW D | 2020年 / 102卷 / 08期

关键词：

ENERGY COSMIC-RAYS; UNIVERSE;

D O I：

10.1103/PhysRevD.102.083526

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In this work, we provide a link between a nearly vanishing cosmological constant and chiral symmetry. This is accomplished with a modification of general relativity coupled to a topological field theory, namely BF theory, by introducing fermions charged under the BF theory gauge group. We find that the cosmological constant sources a chiral anomaly for the fermions, providing a "technical naturalness" explanation for the smallness of the observed cosmological constant. Applied to the early Universe, we show that production of fermions during inflation can provide all the dark matter in the Universe today, in the form of superheavy dark baryons.

引用

页数：12

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