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- W4288793812 abstract "We propose a model of inflation driven by the relaxation of an initially Planckian cosmological constant due to diffusion. The model can generate a (approximately) scale invariant spectrum of (adiabatic) primordial perturbations with the correct amplitudes and red tilt without an inflaton. The inhomogeneities observable in the cosmic microwave background (CMB) arise from those associated with the fundamental Planckian granularity that are imprinted into the standard model Higgs scalar fluctuations during the inflationary phase. The process admits a semiclassical interpretation and avoids the trans-Planckian problem of standard inflationary scenarios based on the role of vacuum fluctuations. The deviations from scale invariance observed in the CMB are controlled by the self-coupling constant of the Higgs scalar of the standard model of particle physics. The thermal production of primordial black holes can produce the amount of cold dark matter required by observations. For natural initial conditions set at the Planck scale the amplitude and tilt of the power spectrum of perturbations observed at the CMB depend only on known parameters of the standard model such as the self-coupling of the Higgs scalar and its mass." @default.
- W4288793812 created "2022-07-30" @default.
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- W4288793812 date "2022-09-23" @default.
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- W4288793812 title "Planckian discreteness as seeds for cosmic structure" @default.
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- W4288793812 doi "https://doi.org/10.1103/physrevd.106.063528" @default.
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