Anisotropic Inflation from Vector Impurity

We study an inflationary scenario with a vector impurity. We show that the universe undergoes anisotropic inflationary expansion due to a preferred direction determined by the vector. Using the slow-roll approximation, we find a formula to determine anisotropy of the inflationary universe. We discus...

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Veröffentlicht in:	arXiv.org 2008-08
Hauptverfasser:	Kanno, Sugumi, Kimura, Masashi, Soda, Jiro, Yokoyama, Shuichiro
Format:	Artikel
Sprache:	eng
Schlagworte:	Anisotropy Curvature Gravitation Gravitational waves Impurities Physics - Astrophysics of Galaxies Physics - Cosmology and Nongalactic Astrophysics Physics - Earth and Planetary Astrophysics Physics - General Relativity and Quantum Cosmology Physics - High Energy Astrophysical Phenomena Physics - High Energy Physics - Phenomenology Physics - High Energy Physics - Theory Physics - Instrumentation and Methods for Astrophysics Physics - Solar and Stellar Astrophysics Universe
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