Unmodified Gravity
arXiv:1004.1920 · doi:10.1111/j.1365-2966.2010.17734.x
Abstract
By relaxing the conventional assumption of a purely gravitational interaction between dark energy and dark matter, substantial alterations to the growth of cosmological structure can occur. In this work we focus on the homogeneous transfer of energy from a decaying form of dark energy. We present simple analytic solutions to the modified growth rates of matter fluctuations in these models, and demonstrate that neglecting physics within the dark sector may induce a significant bias in the inferred growth rate, potentially offering a false signature of modified gravity.
7 pages, 5 figures, new eq (7), changes reflect published version
References in corpus (11)
- Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
- Dark Matter and Dark Radiation
- Large-scale instability in interacting dark energy and dark matter fluids
- Cosmologies with Energy Exchange
- Dark Energy versus Modified Gravity
- Observational constraints on an interacting dark energy model
- On the large-scale instability in interacting dark energy and dark matter fluids
- Effects of dark sectors' mutual interaction on the growth of structures
- Cosmological Perturbations in Models of Coupled Dark Energy
- Acceleration from Modified Gravity: Lessons from Worked Examples
- Redshift Sensitivity of the Kaiser Effect
Cited by in corpus (13)
- Dark Matter and Dark Energy Interactions: Theoretical Challenges, Cosmological Implications and Observational Signatures
- CFHTLenS: Testing the Laws of Gravity with Tomographic Weak Lensing and Redshift Space Distortions
- Interacting Dark Energy -- constraints and degeneracies
- Testing the Interaction between Dark Energy and Dark Matter with Planck Data
- Cosmological constraints on interacting dark energy with redshift-space distortion after Planck data
- Effects of Massive Neutrinos on the Large-Scale Structure of the Universe
- Testing coupled dark energy with large scale structure observation
- Coupled dark energy with perturbed Hubble expansion rate
- Cosmological constraints on coupled dark energy
- Distinguishing interacting dark energy from wCDM with CMB, lensing, and baryon acoustic oscillation data
- The effect of Dark Matter and Dark Energy interactions on the peculiar velocity field and the kinetic Sunyaev-Zel'dovich effect
- Simulating Momentum Exchange in the Dark Sector
- The Distinguishability of Interacting Dark Energy from Modified Gravity