Peter Adshead

KICP Fellow

Ph.D., Physics, Yale University, 2010
Contact Information
Phone: (773) 702- 7862
Location: LASR 206
My research lies in the broad overlap between cosmology, high energy theory and astrophysics. My specific interests are constructing and testing theories of the early universe, effective field theories of inflation, and cosmological perturbation theory. Cosmology represents a unique opportunity to study physics at energies far beyond the reach of terrestrial accelerators. The concordance cosmology has the universe emerging from a hot (near) singularity 14 billion years ago, expanding and eventually cooling into the state we observe today. This "Big Bang" provides a laboratory in which we can test our theories at the highest conceivable energies. In addition to theoretical predictions for the earliest times, I am particularly interested in what we can learn about fundamental theories of physics by observing relic radiation from these epochs.

My main research interests include theoretical aspects of cosmological perturbation theory, constraining models of inflation with astrophysical observations, and higher order statistics of stochastic gravitational waves.
Talks, Lectures, & Workshops

KICP Publications
2013 | 2012 | 2011

Latest Journal Publications
  1. "Primordial non-Gaussianity and reionization", Physical Review D, vol. 88, Issue 2, id. 023534 (Jul 2013)
  2. "Bispectrum in single-field inflation beyond slow-roll", Physical Review D, vol. 88, Issue 2, id. 023507 (Jul 2013)
  3. "Gauge fields and inflation: Chiral gravitational waves, fluctuations, and the Lyth bound", Physical Review D, vol. 88, Issue 2, id. 021302 (Jul 2013)
  4. "Perturbations in Chromo-Natural Inflation", arXiv:1305.2930 (May 2013)
  5. "Chern-Simons EM-flation", Journal of High Energy Physics, Volume 2013, article id. #27 (Feb 2013)
  6. "Warp features in DBI inflation", Physical Review D, vol. 86, Issue 6, id. 063529 (Sep 2012)
  7. "Non-Gaussianity and excursion set theory: Halo bias", Physical Review D, vol. 86, Issue 6, id. 063526 (Sep 2012)
  8. "Gauge-flation trajectories in chromo-natural inflation", Physical Review D, vol. 86, Issue 4, id. 043530 (Aug 2012)
  9. "Natural Inflation on a Steep Potential with Classical Non-Abelian Gauge Fields", Physical Review Letters, vol. 108, Issue 26, id. 261302 (Jun 2012)
  10. "Fast computation of first-order feature-bispectrum corrections", Physical Review D, vol. 85, Issue 10, id. 103531 (May 2012)
  11. "Non-Gaussianity from step features in the inflationary potential", Physical Review D, vol. 85, Issue 2, id. 023531 (Jan 2012)
  12. "Fast Computation of Bispectrum Features with Generalized Slow Roll", Physical Review D, vol. 84, Issue 4, id. 043519 (Aug 2011)

Past Visitors:
  1. Joel Meyers, Canadian Institute for Theoretical Astrophysics (2013)
  2. Rachel Rosen, Columbia University (2013)
  3. Matthew Johnson, Perimeter Institute for Theoretical Physics (2012)
  4. Adam Lidz, University of Pennsylvania (2012)
  5. Laura Newburgh, Princeton University (2012)
  6. Will Percival, University of Portsmouth (2012)
  7. David Seery, University of Sussex (2012)
  8. Mustafa Amin, Massachusetts Institute of Technology (2011)
  9. Adam Brown, Princeton University (2011)
  10. Matthew Buckley, Fermi National Accelerator Laboratory (2011)
  11. John Giblin, Kenyon College/Case Western (2011)
  12. Eugene Lim, University of Cambridge (2011)
  13. Rachel Rosen, Columbia University (2011)