De-Sitter Quantum Loops as the origin of Primordial Non-Gaussianities
- Creators
- An, Haipeng
- Wise, Mark B.
- Zhang, Zipei
Abstract
It was recently pointed out that in some inflationary models quantum loops containing a scalar of mass m that couples to the inflaton can be the dominant source of primordial non-Gaussianities. We explore this phenomenon in the simplest such model focusing on the behavior of the primordial curvature fluctuations for small m/H. Explicit calculations are done for the three- and four-point curvature fluctuation correlations. Constraints on the parameters of the model from the cosmic microwave background limits on primordial non-Gaussianity are discussed. The bispectrum in the squeezed limit and the trispectrum in the compressed limit are examined. The form of the n-point correlations as any partial sum of wave vectors gets small is determined.
Additional Information
© 2019 Published by the American Physical Society under the terms of the the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3. Received 18 September 2018; published 15 March 2019. H. A. is supported by the Recruitment Program for Young Professionals of the 1000 Talented Plan and the Tsinghua University Initiative Scientific Research Program. M. B. W. is supported by the DOE Grant No. DE-SC0011632 and the Walter Burke Institute for Theoretical Physics.Attached Files
Published - PhysRevD.99.056007.pdf
Submitted - 1806.05194.pdf
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Additional details
- Eprint ID
- 87280
- Resolver ID
- CaltechAUTHORS:20180620-154220173
- 042002006
- 1000 Young Talents Program
- 53330200618
- Tsinghua University
- DE-SC0011632
- Department of Energy (DOE)
- Walter Burke Institute for Theoretical Physics, Caltech
- SCOAP3
- Created
-
2018-06-20Created from EPrint's datestamp field
- Updated
-
2021-11-15Created from EPrint's last_modified field
- Caltech groups
- Walter Burke Institute for Theoretical Physics
- Other Numbering System Name
- CALT-TH
- Other Numbering System Identifier
- 2018-027