574 citations · 3.8k across the 87 of their papers we have counts for
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Non-Gaussianity from false vacuum inflation: Old curvaton scenario
Jinn-Ouk Gong, Chunshan Lin, Yi Wang
We calculate the three-point correlation function of the comoving curvature perturbation generated during an inflationary epoch driven by false vacuum energy. We get a novel false…
Fluctuations in a Hořava-Lifshitz Bouncing Cosmology
Xian Gao, Yi Wang, Wei Xue +1
Hořava-Lifshitz gravity is a potentially UV complete theory with important implications for the very early universe. In particular, in the presence of spatial curvature it is possi…
Quasi-Single Field Inflation and Non-Gaussianities
Xingang Chen, Yi Wang
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 den…
Large non-Gaussianities with Intermediate Shapes from Quasi-Single Field Inflation
Xingang Chen, Yi Wang
We study the slow-roll inflation models, where the inflaton slow-rolls along a trajectory whose orthogonal directions are lifted by potentials with masses of order the Hubble param…
Cosmological Perturbations in Hořava-Lifshitz Gravity
Xian Gao, Yi Wang, R. Brandenberger +1
We study cosmological perturbations in Hořava-Lifshitz Gravity. We consider scalar metric fluctuations about a homogeneous and isotropic space-time. Starting from the most general…