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6 research outcomes, page 1 of 1
  • publication . Article . Preprint . 2014
    Open Access
    Authors:
    Wainwright, Carroll L.; Johnson, Matthew C.; Aguirre, Anthony; Peiris, Hiranya V.;
    Persistent Identifiers
    Publisher: IOP Publishing
    Project: EC | COSMICDAWN (306478)

    Observing the relics of collisions between bubble universes would provide direct evidence for the existence of an eternally inflating Multiverse; the non-observation of such events can also provide important constraints on inflationary physics. Realizing these prospects...

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

    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 . 2018
    Open Access English
    Authors:
    Jonathan Braden; Matthew C. Johnson; Hiranya V. Peiris; Silke Weinfurtner;
    Persistent Identifiers
    Publisher: Springer Verlag
    Country: United Kingdom
    Project: NSF | Programs on Critical Prob... (1066293), EC | COSMICDAWN (306478)

    Analog condensed matter systems present an exciting opportunity to simulate early Universe models in table-top experiments. We consider a recent proposal for an analog condensed matter experiment to simulate the relativistic quantum decay of the false vacuum. In the pro...

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

    This is the third paper in a series establishing a quantitative relation between inflationary scalar field potential landscapes and the relic perturbations left by the collision between bubbles produced during eternal inflation. We introduce a new method for computing c...

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  • publication . Preprint . Article . 2015
    Open Access English
    Authors:
    Braden, JonathanCITA, University of Toronto, 60 St. George Street, Toronto, ON, M5S 3H8, Canada; Bond, J. Richard(CITA, University of Toronto, 60 St. George Street, Toronto, ON, M5S 3H8, Canada); Mersini-Houghton, Laura(Department of Physics and Astronomy, University of North Carolina-Chapel Hill, 1 Phillips Hall, 120 E. Cameron Avenue, Chapel Hill, NC 27599-3255, U.S.A.);
    Country: Italy
    Project: NSERC , EC | COSMICDAWN (306478)

    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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  • publication . Article . Preprint . 2019
    Open Access English
    Authors:
    Braden, Jonathan; Johnson, Matthew C.; Peiris, Hiranya V.; Pontzen, Andrew; Weinfurtner, Silke;
    Persistent Identifiers
    Publisher: APS
    Project: EC | COSMICDAWN (306478), UKRI | Black Hole Superradiance ... (EP/P00637X/1)

    We introduce a new picture of vacuum decay which, in contrast to existing semiclassical techniques, provides a real-time description and does not rely on classically-forbidden tunneling paths. Using lattice simulations, we observe vacuum decay via bubble formation by ge...

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6 research outcomes, page 1 of 1