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CMBPol Mission Concept Study Probing Ination with CMB Polarization

- D. Baumann, M. Jackson, +56 authors M. Zaldarriaga
- Physics
- 24 November 2008

We summarize the utility of precise cosmic microwave background (CMB) polarization measurements as probes of the physics of ination. We focus on the prospects for using CMB measurements

“In-in” formalism and cosmological perturbations

- P. Adshead, R. Easther, Eugene A. Lim
- Physics
- 27 April 2009

We describe an efficient scheme for evaluating higher order contributions to primordial cosmological perturbations using the ``in-in'' formalism, which is the basis of modern calculations of… Expand

Large non-Gaussianities in single-field inflation

- X. Chen, R. Easther, Eugene A. Lim
- Physics
- 21 November 2006

We compute the three-point correlation function for a general model of inflation driven by a single, minimally coupled scalar field. Our approach is based on the numerical evaluation of both the… Expand

Generation and Characterization of Large Non-Gaussianities in Single Field Inflation

- X. Chen, R. Easther, Eugene A. Lim
- Physics
- 22 January 2008

Inflation driven by a single, minimally coupled, slowly rolling field generically yields a negligible primordial non-Gaussianity. We discuss two distinct mechanisms by which a non-trivial potential… Expand

Random matrices and the spectrum of N-flation

- R. Easther, L. McAllister
- Physics
- 8 December 2005

N-flation is a promising embedding of inflation in string theory in which many string axions combine to drive inflation. We characterize the dynamics of a general N-flation model with nondegenerate… Expand

Non-Gaussianities in Multi-field Inflation

- T. Battefeld, R. Easther
- Physics
- 11 October 2006

We compute the amplitude of the non-Gaussianities in inflationary models with multiple, uncoupled scalar fields. This calculation thus applies to all models of assisted inflation, including… Expand

Generic estimate of trans-Planckian modifications to the primordial power spectrum in inflation

- R. Easther, B. Greene, W. H. Shiu
- Physics
- 16 April 2002

We derive a general expression for the power spectra of scalar and tensor fluctuations generated during inflation given an arbitrary choice of boundary condition for the mode function at a short… Expand

Cosmology from random multifield potentials

- A. Aazami, R. Easther
- Physics
- 5 December 2005

We consider the statistical properties of vacua and inflationary trajectories associated with a random multifield potential. Our underlying motivation is the string landscape, but our calculations… Expand

Inflationary perturbations from a potential with a step

- J. Adams, B. Cresswell, R. Easther
- Physics
- 13 February 2001

We use a numerical code to compute the density perturbations generated during an inflationary epoch which includes a spontaneous symmetry breaking phase transition. A sharp step in the inflaton… Expand

Probing inflation with CMB polarization

- D. Baumann, M. Jackson, +56 authors M. Zaldarriaga
- Physics
- 23 June 2008

We summarize the utility of precise cosmic microwave background (CMB) polarization measurements as probes of the physics of inflation. We focus on the prospects for using CMB measurements to… Expand

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