Associate Professor, Dept. of PhysicsPublications
Journal Articles
Tachyacoustic cosmology: an alternative to inflation [ Abstract / PDF ]
With Dennis Bessada (Univ. at Buffalo, INPE Brazil), Dejan Stojkovic (Univ. at Buffalo), and John Wang (Niagara Univ.)
[ Citation Search ]
Inflationary potentials in DBI models [ Abstract / PostScript ]
With Dennis Bessada (Univ. at Buffalo, INPE Brazil) and Konstantinos Tzirakis (Univ. at Buffalo)
Submitted to JCAP
[ Citation Search ]
Tensors, non-Gaussianities, and the future of potential reconstruction [ Abstract / PostScript ]
With Brian Powell (IPMU) and Konstantinos Tzirakis (Univ. at Buffalo)
Published: JCAP 0904 (2009) 019
[ Citation Search ]
Non-canonical generalizations of slow-roll inflation models [ Abstract / PostScript ]
With Konstantinos Tzirakis (Univ. at Buffalo)
Published: JCAP 0901 (2009) 028
[ Citation Search ]
Latest inflation model constraints from cosmic microwave background measurements [ Abstract / PostScript ]
With Edward W. Kolb (Univ. of Chicago), Alessandro Melchiorri (INFN Rome), and Antonio Riotto (CERN/ INFN Padua)
Published: Phys. Rev. D 78 (2008) 087302
[ PRD / Citation Search ]
Quantum modes in DBI inflation: exact solutions and constraints from vacuum selection [ Abstract / PostScript ]
With Konstantinos Tzirakis (Univ. at Buffalo, SUNY)
Published: Phys. Rev. D 77 (2008) 103517. [ PRD / Citation Search ]
Limits on primordial power spectrum resolution: An inflationary flow analysis [ Abstract / PostScript ]
With Brian A. Powell (Univ. at Buffalo, SUNY)
Published: JCAP 0708 (2007) 006.
[ JCAP / Citation Search ]
Inflation over the hill [ Abstract / PostScript ]
With Konstantinos Tzirakis (Univ. at Buffalo, SUNY)
Published: Phys. Rev. D 75 (2007) 123510.
[ PRD / Citation Search ]
Slow roll in simple non-canonical inflation [ Abstract / PostScript ]
With Gabriela Barenboim (Univ. of Valencia)
Published: JCAP 0703 (2007) 014.
[ JCAP / Citation Search ]
The pre-inflationary vacuum in the cosmic microwave background [ Abstract / PostScript ]
With Brian A. Powell (Univ. at Buffalo, SUNY)
Published: Phys. Rev. D 76 (2007) 063512.
[ PRD / Citation Search ]
Natural Inflation: status after WMAP 3-year data [ Abstract / PostScript ]
With Christopher Savage and Katherine Freese (Univ. of Michigan)
Published: Phys. Rev. D 74 (2006) 123511.
[ PRD / Citation Search ]
Inflation model constraints from the Wilkinson Microwave Anisotropy Probe three-year data [ Abstract / PostScript ]
With Edward Kolb (Fermilab), Alessandro Melchiorri (Rome), and Antonio Riotto (CERN).
Published: Phys. Rev. D 74 (2006) 023502.
[ PRD / Citation Search ]
The Lyth Bound and the end of inflation [ Abstract / PostScript ]
With Richard Easther (Yale) and Brian A. Powell (Univ. at Buffalo, SUNY)
Published: JCAP 0608 (2006) 004.
[ JCAP / Citation Search ]
Theoretical uncertainties in inflationary predictions [ Abstract / PostScript ]
With Antonio Riotto (CERN).
Published: JCAP 0603 (2006) 011.
[ JCAP / Citation Search ]
Boundary effective field theory and trans-Planckian perturbations: astrophysical implications [ Abstract / PostScript ]
With Richard Easther (Yale) and Hiranya Peiris (Univ. of Chicago)
Published: JCAP 0508 (2005) 001.
[ JCAP / Citation Search ]
Horizon crossing and inflation with large η [ Abstract / PostScript ]
Published: Phys. Rev. D 72 (2005) 023515. [ PRD / Citation Search ]
Observing trans-Planckian signatures in the Cosmic Microwave Background [ Abstract / PostScript ]
With Richard Easther (Yale) and Hiranya Peiris (Univ. of Chicago)
Published: JCAP 0505 (2005) 009.
[ JCAP / Citation Search ]
The Phantom Bounce: a new oscillating cosmology [ Abstract / PostScript ]
With Matthew G. Brown and Katherine Freese (Univ. of Michigan)
Published: JCAP 0803 (2008) 002.
[ JCAP / Citation Search ]
On Natural Inflation [ Abstract / PostScript ]
With Katherine Freese (Univ. of Michigan)
Published: Phys. Rev. D 70 (2004) 083512.
[ PRD / Citation Search ]
WMAPing inflationary physics [ Abstract / PostScript ]
With Edward W. Kolb (Fermilab), Alessandro Melchiorri (Univ. of Oxford), and Antonio Riotto (INFN, Padua)
Published: Phys. Rev. D 69 (2003) 103516.
[ PRD / Citation Search ]
Monte Carlo reconstruction of the inflationary potential [ Abstract / PostScript ]
With Richard Easther (Columbia Univ.)
Published: Phys. Rev. D 67 (2003) 043511.
[ PRD / Citation Search ]
Inflation: flow, fixed points and observables to arbitrary order in slow roll [ Abstract / PostScript ]
Published: Phys. Rev. D 66 (2002) 083508. [ PRD / Citation Search ]
The Ultimate Fate of Life in an Accelerating Universe [ Abstract / PostScript ]
With Katherine Freese (Univ. of Michigan)
Published: Phys. Lett. B558 (2003) 1.
[ Citation Search ]
A generic estimate of trans-Planckian modifications to the primordial power spectrum in inflation [ Abstract / PostScript ]
With Richard Easther (Columbia Univ.), Brian Greene (Columbia Univ.), and Gary Shiu (Penn. Univ.)
Published: Phys. Rev. D 66 (2002) 023518.
[ PRD / Citation Search ]
Imprints of short distance physics on inflationary cosmology [ Abstract / PostScript ]
With Richard Easther (Columbia Univ.), Brian Greene (Columbia Univ.), and Gary Shiu (Penn. Univ.)
Published: Phys. Rev. D 67 (2003) 063508.
[ Citation Search ]
Cosmology with a long range repulsive force [ Abstract / PostScript ]
With Martina Brisudova (Univ. of Florida) and Richard Woodard (Univ. of Florida)
Published: Phys. Rev. D 65 (2002) 103513.
[ PRD / Citation Search ]
Short distance physics and the consistency relation for scalar and tensor fluctuations in the inflationary universe [ Abstract / PostScript ]
With Lam Hui (Columbia Univ.)
Published: Phys. Rev. D 65 (2002) 103507.
[ PRD / Citation Search ]
Homogeneous and isotropic charge densities to accelerate the universe [ Abstract / PostScript ]
With Martina Brisudova (Univ. of Florida) and Richard Woodard (Univ. of Florida)
Published: Class. Quant. Grav. 18 (2001) 3929
[ Citation Search ]
Inflation as a probe of short distance physics [ Abstract / PostScript ]
With Richard Easther (Columbia Univ.), Brian Greene (Columbia Univ.) and Gary Shiu (Penn Univ.)
Published: Phys. Rev. D 64 (2001) 103502.
[ PRD / Citation Search ]
New constraints on inflation from the cosmic microwave background [ Abstract / PostScript ]
With Alessandro Melchiorri (Universita la Sapienza, Rome) and Antonio Riotto (Scuola Normale Superiore, Pisa)
Published: Phys. Rev. D 63 (2001) 023505
[ PRD / Citation Search ]
Back reaction of a long range force on a Friedmann-Robertson-Walker background [ Abstract / PostScript ]
With Martina Brisudova (Univ. of Florida)
Published: Phys. Rev. D 62 (2000) 103516
[ PRD / Citation Search ]
How to fool CMB parameter estimation [ Abstract / PostScript ]
Published: Phys. Rev. D 63 (2001) 043001 [ PRD / Citation Search ]
Evidence for universal structure in galactic halos [ Abstract / PostScript ]
With Pierre Sikivie (Univ. of Florida)
Published: Phys. Rev. D 61 (2000) 087305
[ PRD / Citation Search ]
Measuring the cosmological lepton asymmetry through the CMB anisotropy [ Abstract / PostScript ]
With Antonio Riotto (CERN)
Published: Phys. Rev. Lett. 83 (1999) 3366
[ PRL / Citation Search ]
Constraining inflation with cosmic microwave background polarization [ Abstract / PostScript ]
Published: Phys. Rev. D 58 (1998) 123506 [ PRD / Citation Search ]
A signature of inflation from dynamical supersymmetry breaking [ Abstract / PostScript ]
With Antonio Riotto (CERN)
Published: Phys. Lett. B435 (1998) 272
[ Citation Search ]
Dynamical supersymmetric inflation [ Abstract / PostScript ]
With Antonio Riotto (CERN)
Published: Astropart. Phys. 10 (1999) 387
[ Citation Search ]
Ribbons on the CBR sky: a powerful test of a baryon symmetric universe [ Abstract / PostScript ]
With Edward W. Kolb and Michael S. Turner (Fermilab / Univ. of Chicago)
Published: Phys. Rev. Lett. 79 (1997) 2620
[ PRL / Citation Search ]
A Hamilton-Jacobi approach to non-slow-roll inflation [ Abstract / PostScript ]
Published: Phys. Rev. D 56 (1997) 2002 [ PRD / Citation Search ]
Cosmic microwave background measurements can discriminate among inflation models [ Abstract / PostScript ]
With Scott Dodelson (Fermilab) and Edward W. Kolb (Fermilab / Univ. of Chicago)
Published: Phys. Rev. D 56 (1997) 3207
[ PRD / Citation Search ]
Inflation at low scales: general analysis and a detailed model [ Abstract / PostScript ]
With K.T. Mahanthappa (Univ. of Colorado)
Published: Phys. Rev. D 53 (1996) 5455
[ PRD / Citation Search ]
Inflation from symmetry breaking below the Planck scale [ Abstract / PostScript ]
With K.T. Mahanthappa (Univ. of Colorado)
Published: Phys. Lett. B383 (1996) 24
[ Citation Search ]
Natural inflation from fermion loops [ Abstract / PostScript ]
With K.T. Mahanthappa (Univ. of Colorado)
Published: Phys. Rev. D 52 (1995) 5529
[ PRD / Citation Search ]
Ph.D. Thesis (Univ. of Colorado, 1996)
Scalar field potentials in inflationary cosmology: general results and models using pseudo Nambu-Goldstone bosons [ Abstract / PostScript (121 pages, 880K) ]
Conference Proceedings
Non-Gaussianity as a Probe of the Physics of the Primordial Universe and the Astrophysics of the Low Redshift Universe [ Abstract / Postscript ]
Science White Paper submitted to the US Astro2010 Decadal Survey. Primary author: E. Komatsu.
The Origin of the Universe as Revealed Through the Polarization of the Cosmic Microwave Background [ Abstract / Postscript ]
Science White Paper submitted to the US Astro2010 Decadal Survey. Primary author: S. Dodelson.
TASI Lectures on Inflation [ Abstract / PDF ]
Lectures given at the 2008 Theoretical Advanced Study Institute at Univ. of Colorado, Boulder.
CMBPol Mission Concept Study: Probing Inflation with CMB Polarization [ Abstract / PDF ]
AIP Conference Proceedings, CMBPol mission concept study.
The Phantom Bounce: A New Proposal for an Oscillating Cosmology [ Abstract / PostScript ]
New York Academy of Sciences Proceedings, Origins of Time's Arrow Conference, October 2007. [ Conference Info ]
Particle physics in the sky: the current status of inflation [ PostScript ]
In the Proceedings of the CTP Symposium on Supersymmetry at LHC: Theoretical and Experimental Prospectives, British University in Egypt, Cairo, Egypt, March 2007. [ Conference Info ]
Inflation after WMAP3 [ Abstract / PostScript ]
In the proceedings of Colliders to Cosmic Rays 2007, Lake Tahoe, CA, February 2007. [ Conference Info ]
Particle physics in the sky: the current status of inflation [ PostScript ]
In the Proceedings of the Symposium on 50 Years of Particle Physics at University of Buffalo, December 2006.
Inflation after WMAP [ Abstract / Postscript ]
In the proceedings of the XXXIXth Rencontres de Moriond "Exploring the Universe". [ Conference Info ]
The energy scale of inflation: is the hunt for the primordial B-mode a waste of time? [ Abstract / Postscript ]
In the proceedings of "The Cosmic Microwave Background and its Polarization", New Astronomy Reviews, (eds. S. Hanany and K.A. Olive). [ Conference Info ]
Cosmology, inflation, and the physics of nothing [ Abstract / Postscript (w/ high-res figures, 11MB gzipped) ]
Lectures given at the NATO Advanced Study Institute on Techniques and Concepts of High Energy Physics, St. Croix, USVI (2002). [ Conference Info ]
Cosmology with a long-range repulsive force [ Abstract / PostScript ]
With Martina Brisudova (Indiana U.) and Richard Woodard (Univ. of Florida)
To appear in the Proceedings of the 4th International Heidelberg Conference in Dark Matter Astro and Particle Physics, Cape Town, South Africa, 4-9 Feb 2002.
[ Conference Info ]
Dark matter and relic particles [ PostScript ]
With Stephen J. Asztalos (MIT), Paolo Gondolo (Case Western Reserve Univ.) and Richard W. Schnee (Case Western Reserve Univ.)
In the Proceedings of Snowmass 2001, Snowmass, CO, July 2001.
[ Conference Info ]
New constraints on inflation from the CMB [ PostScript ]
With Alessandro Melchiorri (Universita la Sapienza, Rome) and Antonio Riotto (Scuola Normale Superiore, Pisa)
In the proceedings of the 2000 Texas Symposium on Relativistic Astrophysics, Austin, Texas, December 2000.
[ Conference Info ]
Dark matter caustics [ PostScript ]
With Pierre Sikivie (Univ. of Florida).
In the proceedings of DARK 2000, Heidelberg Germany, July 2000.
[ Conference Info ]
An attempt to do without dark matter. [ Abstract / PostScript ]
With Martina Brisudova (Univ. of Florida).
In the Proceedings of the 15th Florida Workshop in Nonlinear Astronomy and Physics, "The Onset of Nonlinearity".
[ Conference Info ]
Dark matter caustics [ Abstract / PostScript ]
With Pierre Sikivie (Univ. of Florida).
In the proceedings of COSMO99, Particle physics and the early universe, Trieste, Italy.
CMB polarization constraints on inflation [ PostScript ]
In the proceedings of COSMO98, Asilomar, CA, Second international workshop on particle physics and the early universe (1998) 168. [ Conference Info ]
Cosmic microwave background measurements as a way to discriminate among inflation models [ Abstract / PostScript ]
With Scott Dodelson (Fermilab) and Edward W. Kolb (Fermilab / Univ. of Chicago)
In the proceedings of the XXXIIIrd Rencontres de Moriond, Les Arcs, France, Fundamental Parameters in Cosmology (1998) 3.
[ Conference Info ]
Using the cosmic microwave background to discriminate among inflation models [ PostScript ]
With Scott Dodelson (Fermilab) and Edward W. Kolb (Fermilab / Univ. of Chicago)
In Ambleside 1997, Particle physics and the early universe (1997) 386.
[ Conference Info ]
Inflation at low scales: general analysis and a model [ PostScript ]
With K.T. Mahanthappa (Univ. of Colorado)
In proceedings of 28th International Conference on High-energy Physics, Warsaw, Poland, ICHEP 96 (1996) 1529.
[ Conference Info ]
