We study an anisotropic inflationary scenario. We show that the universe undergoes anisotropic inflationary expansion due to a preferred direction determined by a vector. In particular, it is stressed that primordial gravitational waves can be induced from curvature perturbations. Hence, even in low scale inflation, a sizable amount of primordial gravitational waves may be produced during inflation. To verify this expectation, we study perturbations in the anisotropic inflationary background.
|Publication status||Published - 2008|
|Event||18th Workshop on General Relativity and Gravitation in Japan, JGRG 2008 - Higashi-Hiroshima, Japan|
Duration: Nov 17 2008 → Nov 21 2008
|Other||18th Workshop on General Relativity and Gravitation in Japan, JGRG 2008|
|Period||11/17/08 → 11/21/08|
All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics