2016/05/03 by Antonio Bibiano, Darren J. Croton, Darren Croton · 1 citation
Physics and Astronomy · #Astrophysics #Black Holes and Theoretical Physics #Cosmology #Cosmology and Gravitation Theories #Friedmann–Lemaître–Robertson–Walker metric #Galaxies: Formation, Evolution, Phenomena #Physics #Theoretical physics #astro-ph.CO
paper · pdf · doi:10.1093/mnras/stw1047
14 pages, 7 figures
arxiv created 2016/05/03 · openalex publication_date 2016/05/05 · arxiv updated 2016/05/25 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We present a suite of cosmological N-body simulations describing the ‘Running Friedmann–Lemaïtre–Robertson–Walker’ (R-FLRW) cosmological model. This model is based on quantum field theory in a curved space–time and extends Lambda cold dark matter (ΛCDM) with a time-evolving vacuum density, Λ(z), and time-evolving gravitational Newton's coupling, G(z). In this paper, we review the model and introduce the necessary analytical treatment needed to adapt a reference N-body code. Our resulting simulations represent the first realization of the full growth history of structure in the R-FLRW cosmology into the non-linear regime, and our normalization choice makes them fully consistent with the latest cosmic microwave background data. The post-processing data products also allow, for the first time, an analysis of the properties of the halo and sub-halo populations. We explore the degeneracies of many statistical observables and discuss the steps needed to break them. Furthermore, we provide a quantitative description of the deviations of R-FLRW from ΛCDM, which could be readily exploited by future cosmological observations to test and further constrain the model.