Axions in gravity with torsion

被引：36

作者：

Castillo-Felisola, Oscar ^{[1
,2
]}

Corral, Cristobal ^{[1
,2
]}

Kovalenko, Sergey ^{[1
,2
]}

Schmidt, Ivan ^{[1
,2
]}

Lyubovitskij, Valery E. ^{[3
,4
,5
]}

机构：

[1] Univ Tecn Federico Santa Maria, Dept Fis, Valparaiso, Chile

[2] Ctr Cient Tecnol Valparaiso, Valparaiso, Chile

[3] Univ Tubingen, Inst Theoret Phys, Kepler Ctr Astro & Particle Phys, D-72076 Tubingen, Germany

[4] Tomsk State Univ, Dept Phys, Tomsk 634050, Russia

[5] Tomsk Polytech Univ, Dept Math Phys, Tomsk 634050, Russia

来源：

PHYSICAL REVIEW D | 2015年 / 91卷 / 08期

关键词：

SPECTRAL GEOMETRY; SPACE-TIME; CARTAN; VACUUM;

D O I：

10.1103/PhysRevD.91.085017

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study a scenario allowing a solution of the strong charge parity problem via the Peccei-Quinn mechanism, implemented in gravity with torsion. In this framework there appears a torsion-related pseudoscalar field known as the Kalb-Ramond axion. We compare it with the so-called Barbero-Immirzi axion recently proposed in the literature also in the context of the gravity with torsion. We show that they are equivalent from the viewpoint of the effective theory. The phenomenology of these torsion-descended axions is completely determined by the Planck scale without any additional model parameters. These axions are very light and very weakly interacting with ordinary matter. We briefly comment on their astrophysical and cosmological implications in view of the recent BICEP2 and Planck data.

引用

页数：7

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