Primordial non-gaussianities from multiple-field inflation Export

@misc{citeulike:755004, abstract = {We calculate the three-point correlation function evaluated at horizon crossing for a set of interacting scalar fields coupled to gravity during inflation. This provides the initial condition for the three-point function of the curvature perturbation in the Sasaki--Stewart \delta N formulation. We find that the effect is small, of the order of a slow-roll parameter, and that the non-gaussianity can be determined on large scales once the unperturbed background evolution is known. As an example of the use of our formalism, we calculate the primordial non-gaussianity arising in a model of assisted inflation.}, archivePrefix = {arXiv}, author = {Seery, David and Lidsey, James E.}, citeulike-article-id = {755004}, citeulike-linkout-0 = {http://arxiv.org/abs/astro-ph/0506056}, citeulike-linkout-1 = {http://arxiv.org/pdf/astro-ph/0506056}, day = {21}, eprint = {astro-ph/0506056}, keywords = {calculation, hybrid, inflation, perturbation}, month = {Sep}, posted-at = {2006-07-12 17:09:56}, priority = {2}, title = {Primordial non-gaussianities from multiple-field inflation}, url = {http://arxiv.org/abs/astro-ph/0506056}, year = {2005} }

TY - ELEC ID - citeulike:755004 L3 - citeulike-article-id:755004 N2 - We calculate the three-point correlation function evaluated at horizon crossing for a set of interacting scalar fields coupled to gravity during inflation. This provides the initial condition for the three-point function of the curvature perturbation in the Sasaki--Stewart \delta N formulation. We find that the effect is small, of the order of a slow-roll parameter, and that the non-gaussianity can be determined on large scales once the unperturbed background evolution is known. As an example of the use of our formalism, we calculate the primordial non-gaussianity arising in a model of assisted inflation. TI - Primordial non-gaussianities from multiple-field inflation KW - calculation KW - hybrid KW - inflation KW - perturbation AU - Seery, David AU - Lidsey, James PY - 2005/Sep/21/ UR - http://arxiv.org/abs/astro-ph/0506056 ER -