Observational Signatures and Non-Gaussianities of General Single Field Inflation Export

@misc{citeulike:910290, abstract = {We perform a general study of primordial scalar non-Gaussianities in single field inflationary models. We consider models where the inflaton Lagrangian is an arbitrary function of the scalar field and its first derivative, and the sound speed is arbitrary. We find that under reasonable assumptions, the non-Gaussianity is completely determined by 5 parameters. In special limits of the parameter space, one finds distinctive ``shapes'' of the non-Gaussianity. In models with a small sound speed, several of these shapes would become potentially observable in the near future. Different limits of our formulae recover various previously known results.}, archivePrefix = {arXiv}, author = {Chen, Xingang and Huang, Min-Xin and Kachru, Shamit and Shiu, Gary}, citeulike-article-id = {910290}, citeulike-linkout-0 = {http://arxiv.org/abs/hep-th/0605045}, citeulike-linkout-1 = {http://arxiv.org/pdf/hep-th/0605045}, day = {3}, eprint = {hep-th/0605045}, keywords = {cosmology, inflation, nongaussianities}, month = {May}, posted-at = {2006-10-23 16:29:33}, priority = {2}, title = {Observational Signatures and Non-Gaussianities of General Single Field Inflation}, url = {http://arxiv.org/abs/hep-th/0605045}, year = {2006} }

TY - ELEC ID - citeulike:910290 L3 - citeulike-article-id:910290 N2 - We perform a general study of primordial scalar non-Gaussianities in single field inflationary models. We consider models where the inflaton Lagrangian is an arbitrary function of the scalar field and its first derivative, and the sound speed is arbitrary. We find that under reasonable assumptions, the non-Gaussianity is completely determined by 5 parameters. In special limits of the parameter space, one finds distinctive ``shapes'' of the non-Gaussianity. In models with a small sound speed, several of these shapes would become potentially observable in the near future. Different limits of our formulae recover various previously known results. TI - Observational Signatures and Non-Gaussianities of General Single Field Inflation KW - cosmology KW - inflation KW - nongaussianities AU - Chen, Xingang AU - Huang, Min-Xin AU - Kachru, Shamit AU - Shiu, Gary PY - 2006/May/03/ UR - http://arxiv.org/abs/hep-th/0605045 ER -