Citations:isocurvature


 * 2008 Chiaki Hikage et al, "Limits on Isocurvature Perturbations from Non-Gaussianity in WMAP Temperature Anisotropies" arXiv
 * For the quadratic isocurvature model, we obtain a stringent upper limit on the isocurvature fraction alpha<0.070 (95% CL) for a scale invariant spectrum which is comparable to the limit obtained from the power spectrum.
 * 2009 Xingang Chen, Yi Wang, "Quasi-Single Field Inflation and Non-Gaussianities" arXiv
 * In quasi-single field inflation models, massive isocurvature modes, that are coupled to the inflaton and have mass of order the Hubble parameter, can have nontrivial impacts on density perturbations, especially non-Gaussianities.
 * 2010 Cristian Armendariz-Picon et al, "Primordial Perturbations in Einstein-Aether and BPSH Theories" arXiv
 * Geometrically, the isocurvature mode is the potential for the velocity field of the aether with respect to matter.