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Equilateral Non-Gaussianity and New Physics on the Horizon

- D. Baumann, D. Green
- Physics
- 25 February 2011

We examine the effective theory of single-field inflation in the limit where the scalar perturbations propagate with a small speed of sound. In this case the non-linearly realized time-translation… Expand

Cosmological non-linearities as an effective fluid

- D. Baumann, A. Nicolis, L. Senatore, M. Zaldarriaga
- Physics
- 14 April 2010

The universe is smooth on large scales but very inhomogeneous on small scales. Why is the spacetime on large scales modeled to a good approximation by the Friedmann equations? Are we sure that… Expand

Inflation and String Theory

- D. Baumann, L. McAllister
- Physics, Economics
- 9 April 2014

We review cosmological inflation and its realization in quantum field theory and in string theory. This material is a portion of a book, also entitled "Inflation and String Theory", to be published… Expand

TASI Lectures on Inflation

- D. Baumann
- Physics
- 30 July 2009

In a series of five lectures I review inflationary cosmology. I begin with a description of the initial conditions problems of the Friedmann-Robertson-Walker (FRW) cosmology and then explain how… Expand

Towards an Explicit Model of D-brane Inflation

- D. Baumann, A. Dymarsky, I. Klebanov, L. McAllister
- Mathematics
- 4 June 2007

We present a detailed analysis of an explicit model of warped D-brane inflation, incorporating the effects of moduli stabilization. We consider the potential for D3-brane motion in a warped conifold… Expand

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

On D3-brane Potentials in Compactifications with Fluxes and Wrapped D-branes

- D. Baumann, A. Dymarsky, I. Klebanov, J. Maldacena, L. McAllister, A. Murugan
- Physics
- 7 July 2006

We study the potential governing D3-brane motion in a warped throat region of a string compactification with internal fluxes and wrapped D-branes. If the Kahler moduli of the compact space are… Expand

Non-Gaussianity as a particle detector

- H. Lee, D. Baumann, G. L. Pimentel
- Physics
- 13 July 2016

A bstractWe study the imprints of massive particles with spin on cosmological correlators. Using the framework of the effective field theory of inflation, we classify the couplings of these particles… Expand

D3-brane potentials from fluxes in AdS/CFT

- D. Baumann, A. Dymarsky, S. Kachru, I. Klebanov, L. McAllister
- Physics
- 28 January 2010

We give a comprehensive treatment of the scalar potential for a D3-brane in a warped conifold region of a compactification with stabilized moduli. By studying general ultraviolet perturbations in… Expand

The cosmological bootstrap: inflationary correlators from symmetries and singularities

- N. Arkani-Hamed, D. Baumann, H. Lee, G. L. Pimentel
- PhysicsJournal of High Energy Physics
- 31 October 2018

Scattering amplitudes at weak coupling are highly constrained by Lorentz invariance, locality and unitarity, and depend on model details only through coupling constants and the particle content of… Expand

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