FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W3101702999> ?p ?o ?g. }

• W3101702999 endingPage "145" @default.
• W3101702999 startingPage "99" @default.
• W3101702999 abstract "We review the recent progress for modified gravity models of dark energy – including f(R) gravity, scalar-tensor theories, and braneworld models. In f(R) gravity, where the Lagrangian density f is a function of the Ricci scalar R, the coupling strength between dark energy and non-relativistic matter is of order 1 ( $$Q = -1/sqrt{6}$$ ) in the Einstein frame. Even in this situation it is possible for f(R) models to be consistent with local gravity constraints under the chameleon mechanism, while at the same time satisfying conditions for the cosmological viability. We present a number of viable f(R) models that satisfy cosmological and local gravity constraints. We also study a class of scalar-tensor dark energy models based on Brans–Dicke theory with a scalar-field potential. The action in the Einstein frame can be viewed as a coupled quintessence scenario with a constant coupling Q that is related to a Brans–Dicke parameter $$omega_{mathrm{BD}}$$ via $$3+2omega_{mathrm{BD}}=1/2Q^2$$ . We show that, even when $$|Q|$$ is of the order of 1, it is possible for these models to be consistent with cosmological and local gravity constraints as long as the field potential is designed in a suitable way. We investigate the evolution of matter density perturbations for f(R) and scalar-tensor models and show that model parameters as well as the strength of the coupling Q can be constrained from matter/CMB power spectra due to the enhanced growth rate of perturbations compared to the ΛCDM model. Finally, we discuss the DGP braneworld model as a candidate for dark energy. While the late-time cosmic acceleration is possible, this model is under strong pressure from joint constraints using the data of SNLS, BAO, and the CMB shift parameter. Moreover, a ghost mode is present for such a self-accelerating universe. Thus the original DGP model is effectively ruled out from observational constraints as well as from the ghost problem." @default.
• W3101702999 created "2020-11-23" @default.
• W3101702999 creator A5013481498 @default.
• W3101702999 date "2010-01-01" @default.
• W3101702999 modified "2023-10-11" @default.
• W3101702999 title "Modified Gravity Models of Dark Energy" @default.
• W3101702999 cites W1492154955 @default.
• W3101702999 cites W1556419317 @default.
• W3101702999 cites W1877851269 @default.
• W3101702999 cites W1908723437 @default.
• W3101702999 cites W1934775445 @default.
• W3101702999 cites W1958232190 @default.
• W3101702999 cites W1966780261 @default.
• W3101702999 cites W1967450024 @default.
• W3101702999 cites W1968519690 @default.
• W3101702999 cites W1971230011 @default.
• W3101702999 cites W1975340488 @default.
• W3101702999 cites W1975756206 @default.
• W3101702999 cites W1979642537 @default.
• W3101702999 cites W1980560740 @default.
• W3101702999 cites W1982583605 @default.
• W3101702999 cites W1985121837 @default.
• W3101702999 cites W1985176266 @default.
• W3101702999 cites W1987594565 @default.
• W3101702999 cites W1988270939 @default.
• W3101702999 cites W1989972931 @default.
• W3101702999 cites W1994511500 @default.
• W3101702999 cites W2004493956 @default.
• W3101702999 cites W2007073865 @default.
• W3101702999 cites W2007479791 @default.
• W3101702999 cites W2012139916 @default.
• W3101702999 cites W2015121291 @default.
• W3101702999 cites W2017801404 @default.
• W3101702999 cites W2021084482 @default.
• W3101702999 cites W2023724948 @default.
• W3101702999 cites W2024192612 @default.
• W3101702999 cites W2036482104 @default.
• W3101702999 cites W2036853133 @default.
• W3101702999 cites W2040972036 @default.
• W3101702999 cites W2041664594 @default.
• W3101702999 cites W2049393017 @default.
• W3101702999 cites W2050573442 @default.
• W3101702999 cites W2056264338 @default.
• W3101702999 cites W2058814248 @default.
• W3101702999 cites W2071863200 @default.
• W3101702999 cites W2071937107 @default.
• W3101702999 cites W2073603601 @default.
• W3101702999 cites W2075948549 @default.
• W3101702999 cites W2079340835 @default.
• W3101702999 cites W2079447845 @default.
• W3101702999 cites W2080819887 @default.
• W3101702999 cites W2081135636 @default.
• W3101702999 cites W2084180141 @default.
• W3101702999 cites W2086175205 @default.
• W3101702999 cites W2094403770 @default.
• W3101702999 cites W2096255088 @default.
• W3101702999 cites W2096895652 @default.
• W3101702999 cites W2098593734 @default.
• W3101702999 cites W2106668864 @default.
• W3101702999 cites W2110328452 @default.
• W3101702999 cites W2111042150 @default.
• W3101702999 cites W2112251478 @default.
• W3101702999 cites W2112904195 @default.
• W3101702999 cites W2113396177 @default.
• W3101702999 cites W2116393936 @default.
• W3101702999 cites W2117619769 @default.
• W3101702999 cites W2125048434 @default.
• W3101702999 cites W2130439604 @default.
• W3101702999 cites W2131279590 @default.
• W3101702999 cites W2131628703 @default.
• W3101702999 cites W2137113888 @default.
• W3101702999 cites W2137919480 @default.
• W3101702999 cites W2140074232 @default.
• W3101702999 cites W2141564053 @default.
• W3101702999 cites W2149441316 @default.
• W3101702999 cites W2151768910 @default.
• W3101702999 cites W2152565162 @default.
• W3101702999 cites W2154678216 @default.
• W3101702999 cites W2154905269 @default.
• W3101702999 cites W2156404110 @default.
• W3101702999 cites W2158947088 @default.
• W3101702999 cites W2160304727 @default.
• W3101702999 cites W2163930464 @default.
• W3101702999 cites W2169031147 @default.
• W3101702999 cites W2171317216 @default.
• W3101702999 cites W2171939758 @default.
• W3101702999 cites W2173390048 @default.
• W3101702999 cites W2175308253 @default.
• W3101702999 cites W2212193725 @default.
• W3101702999 cites W2591817099 @default.
• W3101702999 cites W2594609997 @default.
• W3101702999 cites W2748011312 @default.
• W3101702999 cites W3037060671 @default.
• W3101702999 cites W3037340860 @default.
• W3101702999 cites W3037480702 @default.
• W3101702999 cites W3037508136 @default.
• W3101702999 cites W3097984739 @default.
• W3101702999 cites W3098371892 @default.

• next