Inflationary squeezed bispectrum and super-horizon modes

ORAL

Abstract

Generically, inflation predicts a larger number of e-folds than the $N=60$ required to solve the horizon problem. Therefore, our observations only probe a sub-volume of the whole patch generated during inflation, and the locally observed statistics might be different than the statistics in the large volume, inducing a bias, or variance, on the locally observed cosmological parameters. We study the coupling between sub- and super-horizon modes and its impact on late time correlation functions of the curvature perturbation. In particular, in this talk, we focus on the case of the bispectrum in the squeezed limit, a popular probe to study the properties of multi-field inflation.

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Authors

  • Anne-Sylvie Deutsch

    Penn State

  • Nick Colmenares

    Los Alamos National Laboratory, Tsinghua Univ, Univ of Tennessee, Western Michigan Univ, Goether Univ, Washington Univ, UMass Lowell, Univ of Hong Kong, Michigan State Univ, ANL, UMD College Park, Cyclotron Institute, Chemistry Department, Texas A&M University, Cyclotron Institute, Texas A&M University, TU Darmstadt, Germany, University of York, United Kingdom, University of Cologne, Germany, National Superconducting Cyclotron Laboratory, Michigan State University, USA, Simon Fraser University, University of York, TU Darmstadt, National Superconducting Cyclotron Laboratory, Osaka University, RCNP, TU Darmstadt, Michigan State University/National Superconducting Cyclotron Laboratory, Albert Einstein Institute, CITA, University of Toronto, California Institute of Technology, University of Wisconsin–Milwaukee, Northwestern University, California State University, Fullerton, Georgia Institute of Technology, Rochester Institute of Technology, Sichuan U, Caltech, University of Florida, Goddard Space Flight Center, LIGO Hanford Observatory, University of Texas at Arlington, Florida State Univ, Perimeter Institute for Theoretical Physics, Canadian Institute for Theoretical Astrophysics, Princeton University, Harvard University, None, FHNW, SSL, ISZF, Ioffe-Institute, Stanford Univ, BAERI, LMSAL, Stanford Univ, INFN Pisa (Italy), New York City College of Technology, CUNY, ITI Vietnam National University, Univ of Chicago, Rochester Inst of Tech, NASA/Marshall Space Flight Center, Montana State University, University of Southampton, The University of Tokyo, Tokyo, Japan, University of the Ryukyus, Okinawa, Japan, University of Wisconsin-Milwaukee, Institute for Theoretical Physics, Frankfurt am Main, Germany, Osaka University, Toyonaka, Japan, University of Mississippi, Jet Propulsion Laboratory, Cornell Center for Astrophysics and Planetary Science, Canadian Institute for Advanced Research, National Center for Supercomputing Applications, University of Illinois at Urbana-Champaign, University of Cambridge, NCSA University of Illinois at Urbana-Champaign, Fort Hare, Georgia Institue of Technology, Georgia Inst of Tech, South Dakota State University, University of Massachusetts, Amherst, MIT Lincoln Laboratory, Fairfield University, University of Iowa, Sinop University, Bingol University, CERN, Washington University in St. Louis, Michigan State University, Argonne National Lab, University of Science and Technology of China, University of Kentucky, Michigan State University and NSCL, USA, J{\"u}lich Centre for Neutron Science, Germany, Physikalisch-Technische Bundesanstalt, Germany, Technische Universit{\"a}t M{\"u}nchen, Germany, University of Michigan, USA, Ohio University, University of Manchester, Vinca Institute, University of Belgrade, Institute for High Energy Physics, Protvino, Los Alamos National Lab, NASA/GSFC, University of Amsterdam, University of Wuerzburg, University of Wisconsin - Milwaukee, UNSW Australia, University of Victoria, BC, Canada, and Perimeter Institute for Theoretical Physics, Queen's University, Belfast, UK, Bowie State University, MD, University of Manitoba, McGill University, Louisiana State University, University of California, Irvine, Soreq NRC, Yavne 81800, Israel, Lawrence Livermore National Laboratory, Argonne National Laboratory, University of Chicago, Argonne National Laboratory, LLNL, Univ of Notre Dame, Univ of Manitoba, McGill Univ, LBL, LSU, UC Berkeley, University of Notre Dame, University of California, Berkeley, University of Chicago, University of Bonn, University of Bonn, Research Center Julich, George Washington Univ, Univ of Wisconsin, Madison, University of Kansas, INFN, ASI Science Data Center, Clemson University, MIT, Hiroshima University, Astrophysical Science Center, NASA Goddard Space Flight Center, Agenzia Spaziale Italiana Science Data Center, Linnaeus University, Florida International University, University of Maryland, Univ of Texas, Arlington, Tel Aviv U., TAMU, TRIUMF, U. Manitoba, U. British Columbia, Cyclotron Institute, Texas A\&M Univ., Univ. of Manitoba, Tel Aviv Univ., Pennsylvania State Univ, Texas A&M University, Aichi University of Education, Duke University, Thomas Jefferson National Accelerator Facility, Univ of Virginia, Alchemy Logic Systems, Santa Rosa CA, U. of Illinois at Urbana-Champaign, Hebrew University of Jerusalem, U. of North Carolina, California Institute of Tech., Argonne Natl Lab, North Carolina State U., Louisiana State U., Columbia U., Pen. 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