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11 research outcomes, page 1 of 2
  • publication . Article . 2013
    Open Access
    Authors:
    Hiranya V. Peiris; Richard Easther; Raphael Flauger;
    Persistent Identifiers
    Publisher: IOP Publishing
    Project: EC | COSMICDAWN (306478), NSF | CAREER: Strings on the Ho... (0645435), NSF | Probing Fundamental Physi... (0855425)

    We use cosmic microwave background (CMB) data from the 9-year WMAP release to derive constraints on monodromy inflation, which is characterized by a linear inflaton potential with a periodic modulation. We identify two possible periodic modulations that significantly im...

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  • publication . Article . Preprint . 2014
    Open Access English
    Authors:
    Wainwright, Carroll L.; Johnson, Matthew C.; Aguirre, Anthony; Peiris, Hiranya V.;
    Publisher: Institute of Physics Publishing/SISSA
    Project: EC | COSMICDAWN (306478)

    Comment: 35 pages, 17 figures

  • publication . Article . Preprint . 2014
    Open Access English
    Authors:
    Wainwright, Carroll L.; Johnson, Matthew C.; Peiris, Hiranya V.; Aguirre, Anthony; Lehner, Luis; Liebling, Steven L.;
    Publisher: Institute of Physics Publishing/SISSA
    Project: NSF | Collaborative Research: D... (0969827), EC | COSMICDAWN (306478), NSF | Collaborative Research: L... (1308621), NSERC

    Comment: 52 pages, 23 figures. A four page summary of methods and results follows the introduction. Version 2 contains minor clarifications and edits to match the version accepted for publication by JCAP. Version 3 fixes a typo in Eq. 3.10 and a typo in the paragraph af...

  • publication . Article . 2014
    Open Access
    Authors:
    Carroll L. Wainwright; Matthew C. Johnson; Hiranya V. Peiris; Anthony Aguirre; Luis Lehner; Steven L. Liebling;
    Persistent Identifiers
    Publisher: IOP Publishing
    Project: EC | COSMICDAWN (306478), NSERC , NSF | Collaborative Research: D... (0969827), NSF | Collaborative Research: L... (1308621)

    The theory of eternal inflation in an inflaton potential with multiple vacua predicts that our universe is one of many bubble universes nucleating and growing inside an ever-expanding false vacuum. The collision of our bubble with another could provide an important obse...

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  • publication . Article . Preprint . 2017
    Open Access English
    Authors:
    Susan Pyne; Benjamin Joachimi; Hiranya V. Peiris;
    Persistent Identifiers
    Publisher: IOP PUBLISHING LTD
    Project: EC | COSMICDAWN (306478)

    Weak gravitational lensing alters the apparent separations between observed sources, potentially affecting clustering statistics. We derive a general expression for the lensing deflection which is valid for any three-point statistic, and investigate its effect on the th...

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  • publication . Article . 2014
    Open Access
    Authors:
    Stephen M. Feeney; Domenico Marinucci; Jason D. McEwen; Hiranya V. Peiris; Benjamin D. Wandelt; Valentina Cammarota;
    Persistent Identifiers
    Publisher: IOP Publishing
    Project: EC | COSMICDAWN (306478), ANR | SUPER (ANR-11-IDEX-0004), EC | PASCAL (277742)

    Sparse inpainting techniques are gaining in popularity as a tool for cosmological data analysis, in particular for handling data which present masked regions and missing observations. We investigate here the relationship between sparse inpainting techniques using the sp...

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  • publication . Article . 2013
    Open Access
    Authors:
    Licia Verde; Stephen M. Feeney; Daniel J. Mortlock; Hiranya V. Peiris;
    Persistent Identifiers
    Publisher: IOP Publishing
    Project: EC | COSMICDAWN (306478), EC | PHYS.LSS (240117)

    We use Bayesian model comparison to determine whether extensions to Standard-Model neutrino physics -- primarily additional effective numbers of neutrinos and/or massive neutrinos -- are merited by the latest cosmological data. Given the significant advances in cosmic m...

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  • publication . Article . Preprint . 2016
    Open Access English
    Authors:
    Johnson, Matthew C.; Wainwright, Carroll L.; Aguirre, Anthony; Peiris, Hiranya V.;
    Publisher: Institute of Physics Publishing/SISSA
    Project: EC | COSMICDAWN (306478), NSF | Programs on Critical Prob... (1066293)

    Comment: 31 pages, 17 figures. Revised to match published version. Minor clarifications, conclusions unchanged

  • publication . Article . 2013
    Open Access
    Authors:
    Stephen M. Feeney; Hiranya V. Peiris; Licia Verde;
    Persistent Identifiers
    Publisher: IOP Publishing
    Project: EC | PHYS.LSS (240117), EC | COSMICDAWN (306478)

    It has been suggested that recent cosmological and flavor-oscillation data favor the existence of additional neutrino species beyond the three predicted by the Standard Model of particle physics. We apply Bayesian model selection to determine whether there is indeed any...

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  • publication . Article . Preprint . 2015
    Open Access English
    Authors:
    Braden, Jonathan; Bond, J. Richard; Mersini-Houghton, Laura;
    Persistent Identifiers
    Project: EC | COSMICDAWN (306478), NSERC

    We study collisions between nearly planar domain walls including the effects of small initial nonplanar fluctuations. These perturbations represent the small fluctuations that must exist in a quantum treatment of the problem. In a previous paper, we demonstrated that at...

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11 research outcomes, page 1 of 2