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- W3092301466 abstract "We compute the inflationary perturbation spectra and the quantity r+8nT to the next-to-next-to-leading log order in quantum gravity with purely virtual particles (which means the theory R+R2+C2 with the fakeon prescription/projection for C2). The spectra are functions of the inflationary running coupling α (1/k) and satisfy the cosmic renormalization-group flow equations, which determine the tilts and the running coefficients. The tensor fluctuations receive contributions from the spin-2 fakeon χ μν at every order of the expansion in powers of α ∼ 1/115. The dependence of the scalar spectrum on the χ μν mass mχ, on the other hand, starts from the α2 corrections, which are handled perturbatively in the ratio mϕ/mχ, where mϕ is the inflaton mass. The predictions have theoretical errors ranging from α4∼10−8 to α3 ∼ 10−6. Nontrivial issues concerning the fakeon projection at higher orders are addressed." @default.
- W3092301466 created "2020-10-15" @default.
- W3092301466 creator A5017701661 @default.
- W3092301466 date "2021-02-15" @default.
- W3092301466 modified "2023-10-12" @default.
- W3092301466 title "High-order corrections to inflationary perturbation spectra in quantum gravity" @default.
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- W3092301466 doi "https://doi.org/10.1088/1475-7516/2021/02/029" @default.
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