Following a new quantum cosmological model proposed by Dvali and Gomez, we quantitatively investigate possible modifications to the Hubble parameter and following corrections to the cosmic microwave background spectrum. In this model, scalar and tensor perturbations are generated by the quantum depletion of the background inflaton and graviton condensate respectively. We show how the inflaton mass affects the power spectra and the tensor-to-scalar ratio. Masses approaching the Planck scale would lead to strong deviations, while standard spectra are recovered for an inflaton mass much smaller than the Planck mass.

Casadio, R., Kühnel, F., Orlandi, A. (2015). Consistent cosmic microwave background spectra from quantum depletion. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2015(09), 002-002 [10.1088/1475-7516/2015/09/002].

Consistent cosmic microwave background spectra from quantum depletion

CASADIO, ROBERTO;ORLANDI, ALESSIO
2015

Abstract

Following a new quantum cosmological model proposed by Dvali and Gomez, we quantitatively investigate possible modifications to the Hubble parameter and following corrections to the cosmic microwave background spectrum. In this model, scalar and tensor perturbations are generated by the quantum depletion of the background inflaton and graviton condensate respectively. We show how the inflaton mass affects the power spectra and the tensor-to-scalar ratio. Masses approaching the Planck scale would lead to strong deviations, while standard spectra are recovered for an inflaton mass much smaller than the Planck mass.
2015
Casadio, R., Kühnel, F., Orlandi, A. (2015). Consistent cosmic microwave background spectra from quantum depletion. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2015(09), 002-002 [10.1088/1475-7516/2015/09/002].
Casadio, Roberto; Kühnel, Florian; Orlandi, Alessio
File in questo prodotto:
Eventuali allegati, non sono esposti

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/515189
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 11
  • ???jsp.display-item.citation.isi??? 11
social impact