Testing multi-field inflation with LiteBIRD

doi:10.1088/1475-7516/2024/03/011

Testing multi-field inflation with LiteBIRD

2024-03-06

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DOI：10.1088/1475-7516/2024/03/011

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We investigate expected constraints on the primordial tensor power spectrum from the future cosmic microwave background polarization experiment LiteBIRD as a test of multi -field inflation, where we specifically consider spectator models as representative examples. We argue that the measurements of the tensor -to -scalar ratio and the tensor spectral index, in combination with the constraints on the scalar spectral index from the Planck observation, are useful in testing multi -field inflation models. We also discuss implications for multi -field inflationary model building.

Keywords:

inflation

Inflation and CMBR theory

Testing multi-field inflation with LiteBIRD

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