Calculating Non-adiabatic Pressure Perturbations during Multi-field Inflation

Details Calculating Non-adiabatic Pressure Perturbations during Multi-field Inflation Calculating Non-adiabatic Pressure Perturbations during Multi-field Inflation

2011-11-29

arxiv.org/abs/1111.6919v2

Phys. Rev. D 85, 063507 (2012)

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

v2: Typos fixed, references and comments added; v1: 8 pages, 10 figures, software available to download at http://pyflation.ia

Scientific paper

10.1103/PhysRevD.85.063507

Isocurvature perturbations naturally occur in models of inflation consisting of more than one scalar field. In this paper we calculate the spectrum of isocurvature perturbations generated at the end of inflation for three different inflationary models consisting of two canonical scalar fields. The amount of non-adiabatic pressure present at the end of inflation can have observational consequences through the generation of vorticity and subsequently the sourcing of B-mode polarisation. We compare two different definitions of isocurvature perturbations and show how these quantities evolve in different ways during inflation. Our results are calculated using the open source Pyflation numerical package which is available to download.

Affiliated with

Also associated with

No associations

Rating

Calculating Non-adiabatic Pressure Perturbations during Multi-field Inflation does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Calculating Non-adiabatic Pressure Perturbations during Multi-field Inflation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Calculating Non-adiabatic Pressure Perturbations during Multi-field Inflation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-16995