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Paper   IPM / Astronomy / 15594
School of Astronomy
  Title:   Basic formulation of δN formalism
  Author(s): 
1.  Ali Akbar. Abolhasani
2.  Hassan. Firouzjahi
3.  Atsushi. Naruko
4.  Misao. Sasaki
  Status:   Published
  Journal: world scientific
  Year:  2019
  Pages:   184
  Supported by:            ipm IPM
  Abstract:
The following sections are included:PreliminaryLinear perturbation theorySingle field slow-roll inflationδN formalism in linear perturbation theoryδN formalism in slow-roll inflationδN formalism in multi-field inflation beyond slow-rollNon-linear δN formalismThe Einstein equationsGradient expansionLeading order in gradient expansionCurvature perturbation and non-linear δN formulaStatistical quantitiesPower spectrum in cosmological perturbation theoryPower spectrum and spectral index in δN formalismNon-GaussianitiesImplementation of δN formalism for non-GaussianityPreliminary Linear perturbation theory Single field slow-roll inflation δN formalism in linear perturbation theory δN formalism in slow-roll inflation δN formalism in multi-field inflation beyond slow-roll Non-linear δN formalism The Einstein equations Gradient expansion Leading order in gradient expansion Curvature perturbation and non-linear δN formula Statistical quantities Power spectrum in cosmological perturbation theory Power spectrum and spectral index in δN formalism Non-Gaussianities Implementation of δN formalism for non-Gaussianity

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