Results 81 to 90 of about 12,766 (215)

Observational constraints on dark matter–dark energy scattering cross section

European Physical Journal C: Particles and Fields, 2017
In this letter, we report precise and robust observational constraints on the dark matter–dark energy scattering cross section, using the latest data from cosmic microwave background (CMB) Planck temperature and polarization, baryon acoustic oscillations
Suresh Kumar, Rafael C. Nunes
doaj   +1 more source

The oscillating behavior of the pair correlation function in galaxies

, 2014
The pair correlation function (PCF) for galaxies presents typical oscillations in the range 20-200 Mpc/h which are named baryon acoustic oscillation (BAO).
Zaninetti, L.
core   +1 more source

Modified holographic Ricci interacting dark energy models: dynamical system analysis and Bayesian comparison

European Physical Journal C: Particles and Fields
We perform a dynamical system analysis and a Bayesian model selection for a new set of interacting scenarios in the framework of modified holographic Ricci dark energy (MHR-IDE) models.
Antonella Cid, Israel Obreque
doaj   +1 more source

Testing the cosmic distance duality relation with baryon acoustic oscillations and supernovae data

European Physical Journal C: Particles and Fields
One of the most fundamental relationships in modern cosmology is the cosmic distance duality relation (CDDR), which describes the relationship between the angular diameter distance ( $$D_\textrm{A}$$ D A ) and the luminosity distance ( $$D_\textrm{L}$$ D
Tian-Nuo Li, Guo-Hong Du, Peng-Ju Wu, Jing-Zhao Qi, Jing-Fei Zhang, Xin Zhang   +5 more
doaj   +1 more source

Forecast and analysis of the cosmological redshift drift

European Physical Journal C: Particles and Fields, 2018
The cosmological redshift drift could lead to the next step in high-precision cosmic geometric observations, becoming a direct and irrefutable test for cosmic acceleration.
Ruth Lazkoz, Iker Leanizbarrutia, Vincenzo Salzano   +2 more
doaj   +1 more source

The effective gravitational decoupling between dark matter and the CMB

, 2013
We present a detailed and self-contained analytical derivation of the evolution of sub-horizon cosmological perturbations before decoupling, based on previous work by S. Weinberg.
Lesgourgues, Julien, Tram, Thomas, Voruz, Luc   +2 more
core   +3 more sources

Next-to-leading resummation of cosmological perturbations via the Lagrangian picture: 2-loop correction in real and redshift spaces

, 2011
We present an improved prediction of the nonlinear perturbation theory (PT) via the Lagrangian picture, which was originally proposed by Matsubara (2008).
, , , , A. Lewis, A. Taruya, A.J.S. Hamilton, Atsushi Taruya, D. Jeong, D.J. Eisenstein, D.J. Eisenstein, D.J. Schlegel ., E. Hivon, E.T. Vishniac, H.-J. Seo, H.-J. Seo ., M. Pietroni, N. Kaiser, P. Catelan, P. Catelan, P.J.E. Peebles, R. Juszkiewicz, S. Matarrese, S.-K. Ma, SDSS collaboration, T. Buchert, T. Buchert, T. Buchert, T. Buchert, T. Hamana, T. Matsubara, T. Nishimichi ., Takahiko Matsubara, Tomohiro Okamura, WMAP collaboration, Y.B. Zel'dovich   +35 more
core   +1 more source

A power-law coupled three-form dark energy model

European Physical Journal C: Particles and Fields, 2018
We consider a field theory model of coupled dark energy which treats dark energy as a three-form field and dark matter as a spinor field. By assuming the effective mass of dark matter as a power-law function of the three-form field and neglecting the ...
Yan-Hong Yao, Yang-Jie Yan, Xin-He Meng
doaj   +1 more source

Squeezing Full-shape Dynamical Dark Energy Constraints with Galaxy Alignments

The Astrophysical Journal Letters
Recent 2 σ –4 σ deviations from the cosmological constant ${\rm{\Lambda }}$ suggest that dark energy (DE) may be dynamical, based on baryon acoustic oscillations and full-shape galaxy clustering (FS GC) analyses.
Junsup Shim, Teppei Okumura, Atsushi Taruya   +2 more
doaj   +1 more source

Quantification of 2D vs 3D BAO tension using SNIa as a redshift interpolator and test of the Etherington relation

Physics Letters B
Several studies in the literature have found a disagreement between compressed data on Baryon Acoustic Oscillations (BAO) derived using two distinct methodologies: the two-dimensional (2D, transverse or angular) BAO, which extracts the BAO signal from ...
Arianna Favale, Adrià Gómez-Valent, Marina Migliaccio   +2 more
doaj   +1 more source