Journal
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
Volume -, Issue 5, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1475-7516/2018/05/049
Keywords
inflation; non-gaussianity; particle physics; cosmology connection
Funding
- NSF [PHY-1417421]
- Targeted Scholarship Scheme under the HKSAR Government Scholarship Fund
- Kerry Holdings Limited Scholarship
- ECS [26300316]
- GRF from the Research Grants Council of Hong Kong [16301917]
- Center of Mathematical Sciences and Applications, Harvard University
- Division Of Physics
- Direct For Mathematical & Physical Scien [1650217] Funding Source: National Science Foundation
Ask authors/readers for more resources
We calculate the primordial trispectrum of curvature perturbation in quasi-single field inflation, with general sound speeds for both the inflaton and the massive scalar. Special attention is paid to various soft limits of the trispectrum, where the shape function shows characteristic oscillatory pattern (known as the quantum primordial standard clock signal) as a function of the momentum ratio. Our calculation is greatly simplified by using the mixed propagator developed under a diagrammatic representation of the in-in formalism.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available