Observational signatures of anisotropic inflationary models
Journal of Cosmology and Astroparticle Physics, ISSN: 1475-7516, Vol: 2013, Issue: 12, Page: 009-009
2013
- 64Citations
- 16Captures
Metric Options: CountsSelecting the 1-year or 3-year option will change the metrics count to percentiles, illustrating how an article or review compares to other articles or reviews within the selected time period in the same journal. Selecting the 1-year option compares the metrics against other articles/reviews that were also published in the same calendar year. Selecting the 3-year option compares the metrics against other articles/reviews that were also published in the same calendar year plus the two years prior.
Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
Citation Benchmarking is provided by Scopus and SciVal and is different from the metrics context provided by PlumX Metrics.
Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
Citation Benchmarking is provided by Scopus and SciVal and is different from the metrics context provided by PlumX Metrics.
Article Description
We study observational signatures of two classes of anisotropic inflationary models in which an inflaton field couples to (i) a vector kinetic term FνFν and (ii) a two-form kinetic term HνλHμνλ. We compute the corrections from the anisotropic sources to the power spectrum of gravitational waves as well as the two-point cross correlation between scalar and tensor perturbations. The signs of the anisotropic parameter g are different depending on the vector and the two-form models, but the statistical anisotropies generally lead to a suppressed tensor-to-scalar ratio r and a smaller scalar spectral index n in both models. In the light of the recent Planck bounds of n and r, we place observational constraints on several different inflaton potentials such as those in chaotic and natural inflation in the presence of anisotropic interactions. In the two-form model we also find that there is no cross correlation between scalar and tensor perturbations, while in the vector model the cross correlation does not vanish. The non-linear estimator f of scalar non-Gaussianities in the two-form model is generally smaller than that in the vector model for the same orders of g |, so that the former is easier to be compatible with observational bounds of non-Gaussianities than the latter. © 2013 IOP Publishing Ltd and Sissa Medialab srl.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84891789644&origin=inward; http://dx.doi.org/10.1088/1475-7516/2013/12/009; https://iopscience.iop.org/article/10.1088/1475-7516/2013/12/009; http://stacks.iop.org/1475-7516/2013/i=12/a=009/pdf; http://stacks.iop.org/1475-7516/2013/i=12/a=009?key=crossref.05c590a017dbb29e1882986714b536d0; https://dx.doi.org/10.1088/1475-7516/2013/12/009; https://validate.perfdrive.com/fb803c746e9148689b3984a31fccd902/?ssa=167774e6-33dc-4c57-a54f-27951226d196&ssb=94606293308&ssc=https%3A%2F%2Fiopscience.iop.org%2Farticle%2F10.1088%2F1475-7516%2F2013%2F12%2F009&ssi=4981a532-8427-406d-93b2-87b8eae4cab4&ssk=support@shieldsquare.com&ssm=103958358858410011126217051655736534&ssn=b9786dd2fe1a9c99723962b3356540567f0717f9ea44-4e1f-4e35-b49a3d&sso=49ee415e-f9d9f87a371fa79840fe76a441cd5f290e817b2e06222466&ssp=79255577751719308554171976961797039&ssq=39749108407328189941405699035230349145318&ssr=NTIuMy4yMTcuMjU0&sst=com.plumanalytics&ssu=&ssv=&ssw=&ssx=eyJ1em14IjoiN2Y5MDAwMWUxYTVkMGQtYjRlNi00ZTQ0LWFmYTgtNzUxMTFmZjg0ZDlmNi0xNzE5MzA1Njk5NDA1NDc4MzczNzY5LTViODU0YTI4YjgyN2RjODAxMTI2MDkiLCJfX3V6bWYiOiI3ZjYwMDBjMGI2MzM1NC00OGRkLTRjNTUtODVmZS00NzZmMjgxYzE5ZDgxNzE5MzA1Njk5NDA1NDc4MzczNzY5LTRkYTgwYTczMTA2ZTFjYjAxMTI2MTIiLCJyZCI6ImlvcC5vcmcifQ==
IOP Publishing
Provide Feedback
Have ideas for a new metric? Would you like to see something else here?Let us know