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2019 CAP Congress / Congrès de l'ACP 2019

2–7 Jun 2019
Simon Fraser University
America/Vancouver timezone
Welcome to the 2019 CAP Congress Program website! / Bienvenue au siteweb du programme du Congrès de l'ACP 2019 !

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Session

T3-9 Cosmology (DTP) | Cosmologie (DPT)

T3-9
4 Jun 2019, 13:15
Simon Fraser University

Simon Fraser University

Conveners

T3-9 Cosmology (DTP) | Cosmologie (DPT)

  • Ghazal Geshnizjani (University of Waterloo; Perimeter Institute)

Presentation materials

There are no materials yet.

  1. 2643. Probing Dark Energy with CHIME
    Dr Richard Shaw (UBC)
    04/06/2019, 13:15
    Theoretical Physics / Physique théorique (DTP-DPT)
    Invited Speaker / Conférencier(ère) invité(e)

    CHIME will use Intensity Mapping of the 21cm line of neutral hydrogen to map
    large-scale structure between redshifts of 0.8 and 2.5. By measuring Baryon
    Acoustic Oscillations (BAO) we will place constraints on the dark energy
    equation of state as it begins to dominate the expansion of the Universe,
    particularly at redshifts poorly probed by current BAO surveys.

    In this talk I will introduce...

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  2. 2913. A critical analysis of the CMB: constraining CMB physics with peaks, valleys, and saddles
    Dagoberto Contreras (York University )
    04/06/2019, 13:45
    Theoretical Physics / Physique théorique (DTP-DPT)
    Invited Speaker / Conférencier(ère) invité(e)

    Data analysis of the cosmic microwave background is often performed by making a map of the sky and then converting that map into its spherical harmonics. This is done because the expectation is that the spherical harmonic coefficients are Gaussian random variables, and the data agrees with this prediction extremely well. In this talk I will discuss a less often used map space approach. The...

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  3. 2542. Searching for new physics with next generation CMB experiments
    Prof. Levon Pogosian (SFU)
    04/06/2019, 14:15
    Theoretical Physics / Physique théorique (DTP-DPT)
    Oral (Non-Student) / Orale (non-étudiant(e))

    I will discuss the current status and future prospects of searching for cosmic microwave background signatures of cosmic birefringence, primordial magnetic fields and cosmic strings, and implications for fundamental physics.

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  4. 2669. Geometric Inflation
    Dr Robie Hennigar
    04/06/2019, 14:30
    Theoretical Physics / Physique théorique (DTP-DPT)
    Oral (Non-Student) / Orale (non-étudiant(e))

    We argue that the presence of an inflationary epoch is a natural, almost unavoidable, consequence of the existence of a sensible effective action involving an infinite tower of higher-curvature corrections to the Einstein-Hilbert action. No additional fields besides the metric are required. We show that a family of such corrections giving rise to a well-posed cosmological evolution exists and...

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  5. 2839. TO BE REPLACED - A new semiclassical picture of vacuum decay
    Matthew Johnson (York University/Perimeter Institute)
    Theoretical Physics / Physique théorique (DTP-DPT)
    Invited Speaker / Conférencier(ère) invité(e)

    In this talk I will introduce a new real-time description of vacuum decay in quantum field theories. Vacuum decay via bubble formation is simulated by generating realizations of vacuum fluctuations and evolving lattice simulations with the classical equations of motion. The decay rate obtained from an ensemble of simulations is in excellent agreement with existing semi-classical techniques. I...

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