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PublicationsOpen AccessNational Science FoundationCOSMICDAWNJournal of Cosmology and Astropart...SCOAP3 Repository
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8 research outcomes, page 1 of 1
  • publication . Article . Other literature type . Preprint . 2015
    Designing and testing inflationary models with Bayesian networks
    Open Access English
    Authors:
    Layne C. Price; Layne C. Price; Richard Easther; Hiranya V. Peiris; Jonathan Frazer; Jonathan Frazer;
    doi: 10.3204/pubdb-2016-01166 , 10.1088/1475-7516/2016/02/049 , 10.3204/pubdb-2015-04810
    Publisher: IOP
    Project: EC | STRINGFLATION (647995), EC | COSMICDAWN (306478), NSF | Programs on Critical Prob... (1066293)

    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...

  • publication . Article . Preprint . Other literature type . 2014
    Simulating the universe(s): from cosmic bubble collisions to cosmological observables with numerical relativity
    Open Access
    Authors:
    Anthony Aguirre; Hiranya V. Peiris; Matthew C. Johnson; Matthew C. Johnson; Steven L. Liebling; Carroll L. Wainwright; Luis Lehner;
    doi: 10.1088/1475-7516/2014/03/030
    Publisher: IOP Publishing
    Project: NSF | Collaborative Research: L... (1308621), NSERC , NSF | Collaborative Research: D... (0969827), EC | COSMICDAWN (306478)

    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 . Preprint . Other literature type . 2018
    Towards the cold atom analog false vacuum
    Open Access English
    Authors:
    Matthew C. Johnson; Matthew C. Johnson; Hiranya V. Peiris; Hiranya V. Peiris; Silke Weinfurtner; Jonathan Braden;
    doi: 10.1007/jhep07(2018)014
    Publisher: SpringerOpen
    Project: EC | COSMICDAWN (306478), NSF | Programs on Critical Prob... (1066293)

    Comment: v1: 30 pages + appendices, 9 figures, to be submitted to JHEP; v2: Matches published version. Minor revisions, results unchanged

  • publication . Preprint . Article . 2018
    Bayesian emulator optimisation for cosmology: application to the Lyman-alpha forest
    Open Access English
    Authors:
    Hiranya V. Peiris; Hiranya V. Peiris; Simeon Bird; Keir K. Rogers; Licia Verde; Andrew Pontzen; Andreu Font-Ribera;
    doi: 10.1088/1475-7516/2019/02/031
    Project: EC | COSMICDAWN (306478), RCUK | UCL Astrophysics Consolid... (ST/R000476/1), NSF | New Cosmological Constrai... (1817256), EC | BePreSysE (725327)

    Comment: 23 pages, 4 figures. Minor changes to match version published in JCAP

  • publication . Article . Preprint . 2013
    Constraining monodromy inflation
    Open Access
    Authors:
    Richard Easther; Richard Easther; Hiranya V. Peiris; Hiranya V. Peiris; Raphael Flauger; Raphael Flauger; Raphael Flauger;
    doi: 10.1088/1475-7516/2013/09/018
    Publisher: IOP Publishing
    Project: NSF | Probing Fundamental Physi... (0855425), EC | COSMICDAWN (306478), NSF | CAREER: Strings on the Ho... (0645435)

    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 . 2016
    Simulating the Universe(s) III: Observables for the full bubble collision spacetime
    Open Access English
    Authors:
    Hiranya V. Peiris; Carroll L. Wainwright; Matthew C. Johnson; Matthew C. Johnson; Anthony Aguirre;
    doi: 10.1088/1475-7516/2016/07/020
    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 . Preprint . Article . 2018
    An emulator for the Lyman-α forest
    Open Access English
    Authors:
    Andreu Font-Ribera; Licia Verde; Keir K. Rogers; Andrew Pontzen; Hiranya V. Peiris; Simeon Bird; Simeon Bird;
    doi: 10.1088/1475-7516/2019/02/050
    Project: EC | BePreSysE (725327), EC | COSMICDAWN (306478), NSF | New Cosmological Constrai... (1817256), RCUK | UCL Astrophysics Consolid... (ST/R000476/1)

    Comment: 28 pages, 10 figures, accepted to JCAP with minor changes

  • publication . Preprint . Article . 2015
    MULTIMODECODE: an efficient numerical solver for multifield inflation
    Open Access English
    Authors:
    Layne C. Price; Richard Easther; Jonathan Frazer; Jonathan Frazer; Hiranya V. Peiris; Jiajun Xu;
    doi: 10.1088/1475-7516/2015/03/005
    Project: EC | COSMICDAWN (306478), NSF | Programs on Critical Prob... (1066293)

    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...

8 research outcomes, page 1 of 1