41 citations · 219 across the 10 of their papers we have counts for
8 papers · 1 filter
Halo Mass Functions in Early Dark Energy Cosmologies
Matthew J. Francis, Geraint F. Lewis, Eric V. Linder
We examine the linear density contrast at collapse time, for large-scale structure in dynamical dark energy cosmologies, including models with early dark energy. Contrary to…
Can Early Dark Energy be Detected in Non-Linear Structure?
Matthew J. Francis, Geraint F. Lewis, Eric V. Linder
We present the first study of early dark energy cosmologies using N-body simulations to investigate the formation of non-linear structure. In contrast to expectations from semi-ana…
Cosmological Radar Ranging in an Expanding Universe
Geraint F. Lewis, Matthew J. Francis, Luke A. Barnes +2
While modern cosmology, founded in the language of general relativity, is almost a century old, the meaning of the expansion of space is still being debated. In this paper, the que…
Coordinate Confusion in Conformal Cosmology
Geraint F. Lewis, Matthew J. Francis, Luke A. Barnes +1
A straight-forward interpretation of standard Friedmann-Lemaitre-Robertson-Walker (FLRW) cosmologies is that objects move apart due to the expansion of space, and that sufficiently…
Expanding Space: the Root of all Evil?
Matthew J. Francis, Luke A. Barnes, J. Berian James +1
While it remains the staple of virtually all cosmological teaching, the concept of expanding space in explaining the increasing separation of galaxies has recently come under fire…
Power Spectra to 1% Accuracy between Dynamical Dark Energy Cosmologies
Matthew J. Francis, Geraint F. Lewis, Eric V. Linder
For dynamical dark energy cosmologies we carry out a series of N-body gravitational simulations, achieving percent level accuracy in the relative mass power spectra at any redshift…