dc.contributor.author | Ijjas, Anna | |
dc.contributor.author | Steinhardt, Paul J. | |
dc.contributor.author | Loeb, Abraham | |
dc.date.accessioned | 2019-10-03T14:39:41Z | |
dc.date.issued | 2013 | |
dc.identifier.citation | Ijjas, Anna, Paul J. Steinhardt, and Abraham Loeb. 2013. “Inflationary Paradigm in Trouble after Planck2013.” Physics Letters B 723 (4–5): 261–66. https://doi.org/10.1016/j.physletb.2013.05.023. | |
dc.identifier.issn | 0370-2693 | |
dc.identifier.issn | 1873-2445 | |
dc.identifier.uri | http://nrs.harvard.edu/urn-3:HUL.InstRepos:41461284 | * |
dc.description.abstract | Recent results from the Planck satellite combined with earlier observations from WMAP, ACT, SPT and other experiments eliminate a wide spectrum of more complex inflationary models and favor models with a single scalar field, as reported by the Planck Collaboration. More important, though, is that all the simplest inflaton models are disfavored statistically relative to those with plateau-like potentials. We discuss how a restriction to plateau-like models has three independent serious drawbacks: it exacerbates both the initial conditions problem and the multiverse-unpredictability problem and it creates a new difficulty that we call the inflationary "unlikeliness problem." Finally, we comment on problems reconciling inflation with a standard model Higgs, as suggested by recent LHC results. In sum, we find that recent experimental data disfavors all the best-motivated inflationary scenarios and introduces new, serious difficulties that cut to the core of the inflationary paradigm. Forthcoming searches for B-modes, non-Gaussianity and new particles should be decisive. | |
dc.language.iso | en_US | |
dc.publisher | Elsevier | |
dash.license | OAP | |
dc.title | Inflationary paradigm in trouble after Planck2013 | |
dc.type | Journal Article | |
dc.description.version | Accepted Manuscript | |
dc.relation.journal | Physics Letters, B | |
dash.depositing.author | Loeb, Abraham::e022a3952362350ac8a0138f128a8be7::600 | |
dc.date.available | 2019-10-03T14:39:41Z | |
dash.workflow.comments | 1Science Serial ID 79363 | |
dc.identifier.doi | 10.1016/j.physletb.2013.05.023 | |
dash.source.volume | 723;43195 | |
dash.source.page | 261-266 | |