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5 research outcomes, page 1 of 1
  • publication . Article . Preprint . 2015
    Open Access English
    Authors:
    Richard Easther; Hiranya V. Peiris; Layne C. Price; Jonathan Frazer;
    Publisher: AMER PHYSICAL SOC
    Project: NSF | Programs on Critical Prob... (1066293), EC | COSMICDAWN (306478)

    Comment: 6 pages, 3 figures; v2: discussion updated, matches version accepted by Phys. Rev. Letters

  • publication . Preprint . Article . 2013
    Open Access English
    Authors:
    Richard Easther; Richard Easther; Hiranya V. Peiris; Hiranya V. Peiris; Raphael Flauger; Raphael Flauger; Raphael Flauger;
    Project: NSF | CAREER: Strings on the Ho... (0645435), NSF | Probing Fundamental Physi... (0855425), EC | COSMICDAWN (306478)

    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...

  • publication . Preprint . Article . 2015
    Open Access English
    Authors:
    Layne C. Price; Richard Easther; Jonathan Frazer; Jonathan Frazer; Hiranya V. Peiris; Jiajun Xu;
    Project: NSF | Programs on Critical Prob... (1066293), EC | COSMICDAWN (306478)

    We present MultiModeCode, a Fortran 95/2000 package for the numerical exploration of multifield inflation models. This program facilitates efficient Monte Carlo sampling of prior probabilities for inflationary model parameters and initial conditions and is the first pub...

  • publication . Preprint . Article . 2014
    Open Access English
    Authors:
    Jonathan Frazer; Hiranya V. Peiris; Layne C. Price; Richard Easther;
    Project: EC | COSMICDAWN (306478)

    We explore whether multifield inflationary models make unambiguous predictions for fundamental cosmological observables. Focusing on $N$-quadratic inflation, we numerically evaluate the full perturbation equations for models with 2, 3, and $\mathcal{O}(100)$ fields, usi...

  • publication . Article . Other literature type . Preprint . 2015
    Open Access English
    Authors:
    Layne C. Price; Layne C. Price; Richard Easther; Hiranya V. Peiris; Jonathan Frazer; Jonathan Frazer;
    Publisher: IOP
    Project: EC | STRINGFLATION (647995), NSF | Programs on Critical Prob... (1066293), EC | COSMICDAWN (306478)

    Even simple inflationary scenarios have many free parameters. Beyond the variables appearing in the inflationary action, these include dynamical initial conditions, the number of fields, and couplings to other sectors. These quantities are often ignored but cosmological...

5 research outcomes, page 1 of 1