Matches in SemOpenAlex for { <https://semopenalex.org/work/W4376116464> ?p ?o ?g. }
- W4376116464 endingPage "018" @default.
- W4376116464 startingPage "018" @default.
- W4376116464 abstract "The four-point correlation function of primordial scalar perturbations has parity-even and parity-odd contributions and the parity-odd signal in cosmological observations is opening a novel window to look for new physics in the inflationary epoch. We study the distinct parity-odd and even prediction from the axion inflation model, in which the inflaton couples to a vector field via a Chern-Simons interaction, and the vector field is considered to be either approximately massless ($m_A ll $ Hubble scale $H$) or very massive ($m_A sim H $). The parity-odd signal arises due to one transverse mode of the vector field being predominantly produced during inflation. We adopt the in-in formalism to evaluate the correlation functions. Considering the vector field mode function to be dominated by its real part up to a constant phase, we simplify the formulas for numerical computations. The numerical studies show that the massive and massless vector fields give significant parity-even signals, while the parity-odd contribution is about one to two orders of magnitude smaller." @default.
- W4376116464 created "2023-05-12" @default.
- W4376116464 creator A5000538134 @default.
- W4376116464 creator A5016324584 @default.
- W4376116464 creator A5068116457 @default.
- W4376116464 creator A5074069195 @default.
- W4376116464 date "2023-05-01" @default.
- W4376116464 modified "2023-10-15" @default.
- W4376116464 title "Parity-odd and even trispectrum from axion inflation" @default.
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