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Browsing by Subject "cosmology"

Browsing by Subject "cosmology"

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  • Cosmic Growth and Expansion Conjoined 
    Linder, Eric V. (International conference "ECL17: Exploring the Energetic Universe 2017", Nazarbayev University Energetic Cosmic Laboratory, 2016-10-17)
    Cosmological measurements of both the expansion history and growth history have matured, and the two together provide an important test of general relativity. We consider their joint evolutionary track, showing that this ...
  • DETERMINING MODEL-INDEPENDENT H0 AND CONSISTENCY TESTS 
    Liao, Kai; Shafieloo, Arman; Keeley, Ryan E.; Linder, Eric V. (arxiv, 2020)
    We determine the Hubble constant H0 precisely (2.3% uncertainty) in a manner independent of cosmological model through Gaussian process regression, using strong lensing and supernova data. Strong gravitational lensing ...
  • EXPLORING EARLY AND LATE COSMOLOGY WITH NEXT GENERATION SURVEYS 
    Brando, Guilherme; Linder, Eric V. (PHYSICAL REVIEW D, 2020)
    Perturbations from inflation evolve into large scale structure of the late universe, and encode abundant cosmic structure formation physics. We allow freedom in the primordial power spectrum, rather than assuming a power ...
  • Pole dark energy 
    Linder, E. V. (Physical Review, 2019-11)
    Theories with a pole in the kinetic term have been used to great effect in studying inflation, owing to their quantum stability and attractor properties. We explore the use of such pole kinetic terms in dark energy theories, ...
  • The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: constraining modi ed gravity 
    Mueller, Eva-Maria; Percival, Will; Linder, Eric; Alam, Shadab; Zhao, Gong-Bo; Sanchez, Ariel G.; Beutler, Florian (International conference "ECL17: Exploring the Energetic Universe 2017", Nazarbayev University Energetic Cosmic Laboratory, 2016-12-02)
    We use baryon acoustic oscillation and redshift space distortion from the completed Baryon Oscillation Spectroscopic Survey, corresponding to data release 12 of the Sloan Digital Sky Survey, combined sample analysis in ...
  • Λ is Coming: Parametrizing Freezing Fields 
    Linder, Eric V. (International conference "ECL17: Exploring the Energetic Universe 2017", Nazarbayev University Energetic Cosmic Laboratory, 2017-03-21)
    We explore freezing dark energy, where the evolution of the field approaches that of a cosmological constant at late times. We propose two general, two parameter forms to describe the class of freezing field models, in ...