A New delta N Formalism for Multi-Component Inflation Export

@misc{citeulike:708291, abstract = {The delta N formula that relates the final curvature perturbation on comoving slices to the inflaton perturbation on flat slices after horizon crossing is a powerful and intuitive tool to compute the curvature perturbation spectrum from inflation. However, it is customarily assumed further that the conventional slow-roll condition is satisfied, and satisfied by all components, during horizon crossing. In this paper, we develop a new delta N formalism for multi-component inflation that can be applied in the most general situations. This allows us to generalize the idea of general slow-roll inflation to the multi-component case, in particular only applying the general slow-roll condition to the relevant component. We compute the power spectrum of the curvature perturbation in multi-component general slow-roll inflation, and find that under quite general conditions it is invertible.}, archivePrefix = {arXiv}, author = {Lee, Hyun-Chul and Sasaki, Misao and Stewart, Ewan D. and Tanaka, Takahiro and Yokoyama, Shuichiro}, citeulike-article-id = {708291}, citeulike-linkout-0 = {http://arxiv.org/abs/astro-ph/0506262}, citeulike-linkout-1 = {http://arxiv.org/pdf/astro-ph/0506262}, day = {24}, eprint = {astro-ph/0506262}, keywords = {delta-n, inflation, review}, month = {Sep}, posted-at = {2006-06-23 14:46:46}, priority = {2}, title = {A New delta N Formalism for Multi-Component Inflation}, url = {http://arxiv.org/abs/astro-ph/0506262}, year = {2005} }

TY - ELEC ID - citeulike:708291 L3 - citeulike-article-id:708291 N2 - The delta N formula that relates the final curvature perturbation on comoving slices to the inflaton perturbation on flat slices after horizon crossing is a powerful and intuitive tool to compute the curvature perturbation spectrum from inflation. However, it is customarily assumed further that the conventional slow-roll condition is satisfied, and satisfied by all components, during horizon crossing. In this paper, we develop a new delta N formalism for multi-component inflation that can be applied in the most general situations. This allows us to generalize the idea of general slow-roll inflation to the multi-component case, in particular only applying the general slow-roll condition to the relevant component. We compute the power spectrum of the curvature perturbation in multi-component general slow-roll inflation, and find that under quite general conditions it is invertible. TI - A New delta N Formalism for Multi-Component Inflation KW - delta-n KW - inflation KW - review AU - Lee, Hyun-Chul AU - Sasaki, Misao AU - Stewart, Ewan AU - Tanaka, Takahiro AU - Yokoyama, Shuichiro PY - 2005/Sep/24/ UR - http://arxiv.org/abs/astro-ph/0506262 ER -