Energy flow of λ in Hořava-Lifshitz cosmology

Hořava-Lifshitz gravity is  perturbatively renormalizable quantum gravity model candidate with an anisotropic UV-scaling between space and time. I would like to present a cosmological background analysis of the minimal projectable formulations of the theory, with particular focus on the running of the parameter λ with energy. Using a large dataset consisting of Cosmic Microwave Background data from Planck, Pantheon+ supernovae catalogue, SH0ES Cepheid variable stars, Baryon acoustic oscillations (BAO), Cosmic Chronometers, and gamma-ray bursts (GRB), provide new bounds on the cosmological parameters, in particular λ, which describes deviation from the classical general relativity. The obtained bounds differ from the value λ=1 corresponding to Einstein gravity and seem to run with the energies of the data sources.

Dates: 

Tuesday, 3 December, 2024 - 11:00 to 11:45

Localisation / Location: 

APC

Salle / Local: 

454A
  • Séminaire

Nom/Prénom // Last name/First name: 

Czuchry Ewa

Affiliation: 

Warsaw, Institute of Mathematics and Cryptology, M U T)

Equipe(s) organisatrice(s) / Organizing team(s): 

  • Cosmologie

Pays / Country: 

Pologne

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