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Progress on Old and New Themes in cosmology (PONT) 2020

7–11 Dec 2020
Palais des Papes, Avignon
Europe/Paris timezone

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Session

Invited talks

7 Dec 2020, 09:00
Chambre du Trésorier (Palais des Papes, Avignon)

Chambre du Trésorier

Palais des Papes, Avignon

Presentation materials

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  1. 50. The early years of weak-lensing in cosmology
    Nick Kaiser
    07/12/2020, 09:00
  2. 51. The Rubin Observatory (previously LSST): status and anticipated cosmology achievements
    Pierre Astier
    07/12/2020, 09:40
  3. 52. LiteBIRD, in quest for the primordial gravitational waves
    Ludovic Montier
    07/12/2020, 10:40
  4. 53. The dipole in the galaxy bispectrum
    Roy Maartens
    07/12/2020, 11:20
  5. 54. A crisis in the standard model?
    Eleonora Di Valentino (Institut d'Astrophysique de Paris)
    07/12/2020, 12:00

    The standard LCDM cosmological model of structure formation provides an amazing description of a wide range of astrophysical and astronomical data. However, there are a few statistically significant anomalies and tensions between observations at early and late cosmological time that can indicate a failure of the LCDM model. I will show briefly these tensions, with a particular focus on the...

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  6. 56. The status of cosmological tensions after Planck
    Silvia Galli
    07/12/2020, 15:10
  7. 55. The Hubble Constant Tension/Problem/Crisis
    Adam Riess
    07/12/2020, 15:40
  8. 27. A sound-horizon-agnostic look at the Hubble tension
    Prof. Levon Pogosian (Simon Fraser University)
    07/12/2020, 16:35

    The Hubble tension is relieved if the sound horizon at decoupling, r, is reduced. This can happen as a result of the enhanced recombination induced by primordial magnetic fields or caused by more exotic new physics. However, when trying to bring the H0 value measured from CMB into a complete agreement with SH0ES by reducing r alone, one runs into a disagreement with either the BAO or the...

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  9. 57. Primordial Black Holes as a common origin for baryons and dark matter?
    Sébastien Clesse (Catholic University of Louvain)
    08/12/2020, 09:00

    The origin of the baryon asymmetry of the Universe (BAU) and the nature of dark matter are two of the most challenging problems in cosmology. I will present a scenario in which the gravitational collapse of large inhomogeneities at the QCD epoch generates both the baryon asymmetry and the dark matter in the form of primordial black holes (PBHs). It would naturally explains the observed BAU and...

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  10. 23. Dark matter direct detection: present scenario and future prospects
    Prof. José Matias-Lopes (Coimbra University)
    08/12/2020, 09:40

    Profound evidence for the existence of dark matter has been collected throughout the past 100 years. However, its exact nature remains elusive. A large effort is being put into the search for direct detection of weakly interacting massive particles (WIMPs), which arise as dark matter particle candidates in various theories. The search is led by dual-phase liquid xenon time projection chambers...

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  11. 59. Effective Field Theory of Dark Energy: current constraints and forecasts
    Noemi Frusciante (Instituto de Astrofísica e Ciências do Espaço)
    08/12/2020, 10:40
  12. 60. Fifth force searches in galaxies
    Dr Harry Desmond (University of Oxford)
    08/12/2020, 11:20
  13. 61. New tests for ultra-light dark matter with black hole superradiance
    Dr Diego Blas Temino (King's College London)
    08/12/2020, 12:00
  14. 58. Updates on sub-GeV Direct Detection
    Tien-Tien Yu (University of Oregon (US))
    08/12/2020, 16:20
  15. 12. A fresh look at the calculation of tunneling actions
    Prof. Jose Ramon Espinosa (IFT-UAM/CSIC)
    09/12/2020, 09:00

    The calculation of tunneling actions, that control the exponential
    suppression of the decay of metastable phases (like the unstable
    electroweak vacuum), can be reformulated as an elementary variational
    problem in field space. This alternative approach circumvents the use of
    bounces in Euclidean space by introducing an auxiliary function, a
    tunneling potential Vt that connects smoothly the...

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  16. 63. Quantum scale symmetry in cosmology
    Christof Wetterich (Heidelberg University)
    09/12/2020, 09:40
  17. 64. Neff in the Standard Model - an Update
    Marco Drewes (Universite Catholique de Louvain (UCL) (BE))
    09/12/2020, 10:40
  18. 65. Thermal production and interaction rates in the early universe
    Jacopo Ghiglieri (Centre National de la Recherche Scientifique (FR))
    09/12/2020, 11:20
  19. 62. Swampland and Trans-Planckian Censorship Constraints on Inflation and Dark Energy
    Robert Brandenberger (McGill University)
    09/12/2020, 12:00
  20. 66. Primordial gravitational waves with a blue-tilted spectrum
    Sachiko Kuroyanagi (Tokyo University of Science)
    10/12/2020, 09:00
  21. 68. Cosmology with gravitational wave standard sirens: current results and future prospects
    Nicola Tamanini (IPhT CEA/Saclay)
    10/12/2020, 09:40

    I will introduce the concept of standard siren, reviewing the methodologies that one can apply to probe the cosmic expansion using gravitational wave observations. I will then outline the gravitational wave sources that can be used as standard sirens for both Earth-based (LIGO/Virgo/3G) and space-based (LISA) detectors, pointing out for which of them an electromagnetic counterpart is expected...

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  22. 69. Detecting Gravitational Wave Backgrounds and their anisotropies using networked detectors
    Carlo Contaldi (Imperial College London)
    10/12/2020, 10:40
  23. 70. Black hole metric from scattering amplitudes in various dimensions
    Pierre Vanhove
    10/12/2020, 11:20
  24. 67. Tests of gravity with gravitational waves
    Dr Miguel Zumalacarregui (University of California at Berkeley)
    10/12/2020, 12:00
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