Can the string scale be related to the cosmic baryon asymmetry?

被引：99

作者：

Alexander, Stephon H. S.

Gates, S. James, Jr.

机构：

[1] Stanford Univ, Stanford Linear Accelerator Ctr, Menlo Pk, CA USA

[2] Univ Maryland, Dept Phys, Ctr String & Particle Theory, College Pk, MD 20742 USA

来源：

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2006年 / 06期

关键词：

gravity waves/theory; baryon asymmetry;

D O I：

10.1088/1475-7516/2006/06/018

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In a previous work, a mechanism was presented by which baryon asymmetry can be generated during inflation from elliptically polarized gravitons. Nonetheless, the mechanism only generated a realistic baryon asymmetry under special circumstances, which requires an enhancement of the lepton number from an unspecified GUT. In this paper we provide a stringy embedding of this mechanism, demonstrating that if the model-independent axion is the source of the gravitational waves responsible for the lepton asymmetry, one can observationally constrain the string scale and coupling.

引用

页数：12

共 15 条

[1] NATURAL INFLATION - PARTICLE PHYSICS MODELS, POWER-LAW SPECTRA FOR LARGE-SCALE STRUCTURE, AND CONSTRAINTS FROM THE COSMIC BACKGROUND EXPLORER [J].