Echo of interactions in the dark sector

S Kumar, RC Nunes - Physical Review D, 2017 - APS
We investigate the observational constraints on an interacting vacuum energy scenario with
two different neutrino schemes (with and without a sterile neutrino) using the most recent …

Can interacting dark energy solve the tension?

E Di Valentino, A Melchiorri, O Mena - Physical Review D, 2017 - APS
The answer is yes. We indeed find that interacting dark energy can alleviate the current
tension on the value of the Hubble constant H 0 between the cosmic microwave background …

First evidence of running cosmic vacuum: challenging the concordance model

J Solà, A Gómez-Valent… - The Astrophysical …, 2017 - iopscience.iop.org
Despite the fact that a rigid ${\rm {\Lambda}} $-term is a fundamental building block of the
concordance ΛCDM model, we show that a large class of cosmological scenarios with …

[HTML][HTML] The H0 tension in light of vacuum dynamics in the Universe

J Solà, A Gómez-Valent, J de Cruz Pérez - Physics Letters B, 2017 - Elsevier
Despite the outstanding achievements of modern cosmology, the classical dispute on the
precise value of H 0, which is the first ever parameter of modern cosmology and one of the …

Novel approach toward the large-scale stable interacting dark-energy models and their astronomical bounds

W Yang, S Pan, DF Mota - Physical Review D, 2017 - APS
Stability analysis of interacting dark-energy models generally divides its parameters space
into two regions,(i) wx≥-1 and ξ≥ 0 and (ii) wx≤-1 and ξ≤ 0, where wx is the dark-energy …

A new interacting two-fluid model and its consequences

GS Sharov, S Bhattacharya, S Pan… - Monthly Notices of …, 2017 - academic.oup.com
In the background of a homogeneous and isotropic space-time with zero spatial curvature,
we consider interacting scenarios between two barotropic fluids, one is the pressureless …

Vacuum dynamics in the Universe versus a rigid =const.

J Solà, A Gómez-Valent… - International Journal of …, 2017 - World Scientific
In this year, in which we celebrate 100 years of the cosmological term, Λ, in Einstein's
gravitational field equations, we are still facing the crucial question whether Λ is truly a …

Reconstructing the dark sector interaction with LISA

RG Cai, N Tamanini, T Yang - Journal of Cosmology and …, 2017 - iopscience.iop.org
We perform a forecast analysis of the ability of the LISA space-based interferometer to
reconstruct the dark sector interaction using gravitational wave standard sirens at high …

Constraints on interacting dark energy models from Planck 2015 and redshift-space distortion data

AA Costa, XD Xu, B Wang… - Journal of Cosmology and …, 2017 - iopscience.iop.org
We investigate phenomenological interactions between dark matter and dark energy and
constrain these models by employing the most recent cosmological data including the …

A model with interaction of dark components and recent observational data

S Pan, GS Sharov - Monthly Notices of the Royal Astronomical …, 2017 - academic.oup.com
In the proposed model with interaction between dark energy and dark matter, we consider
cosmological scenarios with different equations of state (wd) for dark energy. For both …