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65 research outcomes, page 1 of 7
  • publication . Article . Preprint . Other literature type . 2015
    Open Access
    Authors:
    John McDonald;
    Publisher: IOP Publishing
    Project: RCUK | Particle Physics: From th... (ST/J000418/1)

    A gauge singlet scalar with non-minimal coupling to gravity can drive inflation and later freeze out to become cold dark matter. We explore this idea by revisiting inflation in the singlet direction (S-inflation) and Higgs Portal Dark Matter in light of the Higgs discov...

  • publication . Article . Preprint . 2013
    Open Access English
    Authors:
    Peter Millington;
    Publisher: Published by Elsevier B.V.
    Project: RCUK | Particle Physics: From th... (ST/J000418/1)

    We present a new perturbative formulation of non-equilibrium thermal field theory, based upon non-homogeneous free propagators and time-dependent vertices. The resulting time-dependent diagrammatic perturbation series are free of pinch singularities without the need for...

  • publication . Article . Preprint . 2013
    Open Access
    Authors:
    Anupam Mazumdar; Sayantan Choudhury;
    Publisher: IOP Publishing
    Project: RCUK | Particle Physics: From th... (ST/J000418/1)

    In this paper we will analyze generic predictions of an inflection-point model of inflation with Hubble-induced corrections and study them in light of the Planck data. Typically inflection-point models of inflation can be embedded within Minimal Supersymmetric Standard ...

  • publication . Article . Preprint . Other literature type . 2016
    Open Access English
    Authors:
    Jeff Forshaw; Peter Millington;
    Publisher: American Physical Society
    Project: RCUK | Particle Physics: From th... (ST/J000418/1)

    We present an approach to computing probabilities in quantum field theory for a wide class of source-detector models. The approach works directly with probabilities and not with squared matrix elements, and the resulting probabilities can be written in terms of expectat...

  • publication . Preprint . Article . 2014
    Open Access English
    Authors:
    Mazumdar, Anupam; Pramod Shukla;
    Project: RCUK | Particle Physics: From th... (ST/J000418/1)

    By demanding the validity of an effective field theory description during inflation, in this note we derive some peculiar inequalities among the three interesting stringy and cosmological parameters, namely the tensor-to-scalar ratio ($r$), the string coupling ($g_s$) a...

  • publication . Preprint . 2013
    Open Access English
    Authors:
    Winstanley, Elizabeth;
    Project: RCUK | Particle Physics: From th... (ST/J000418/1)

    Comment: 6 pages, 2 figures, minor changes, contribution to the Proceedings of the Karl Schwarzschild Meeting (Frankfurt, July 22-26, 2013)

  • publication . Article . Preprint . 2015
    Open Access
    Authors:
    Jeff Forshaw; Peter Millington;
    Publisher: IOP Publishing
    Project: RCUK | Particle Physics: From th... (ST/J000418/1)

    We consider a departure from standard quantum field theory, constructed so as to permit momentum eigenstates of both positive and negative energy. The resulting theory is intriguing because it brings about the cancellation of leading ultra-violet divergences and the abs...

  • publication . Preprint . Article . 2014
    Open Access English
    Authors:
    Csaba Balazs; Anupam Mazumdar;
    Project: RCUK | Particle Physics: From th... (ST/J000418/1)

    Comment: 23 pages, 5 figures. Fixed typos in equation 3.2

  • publication . Article . 2015
    Open Access English
    Authors:
    Kent, C.; Winstanley, E.;
    Publisher: American Physical Society
    Project: RCUK | Particle Physics: From th... (ST/J000418/1)

    We consider a real massive free quantum scalar field with arbitrary curvature coupling on n-dimensional anti–de Sitter spacetime. We use Hadamard renormalization to find the vacuum expectation values of the quadratic field fluctuations and the stress-energy tensor, pres...

  • publication . Preprint . 2013
    Open Access English
    Authors:
    van de Bruck, Carsten; Morrice, Jack; Vu, Susan;
    Project: RCUK | Particle Physics: From th... (ST/J000418/1)

    Comment: 5 pages, RevTeX, 2 figures; paper completely rewritten to accommodate new results. Includes now discussions of: multiple disformal couplings, kinetic theory, effective chemical potential, temperature-redshift relation and frame-dependence of equation of state

65 research outcomes, page 1 of 7
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