New density-functional approximations and beyond: general discussion.
Sign Up to like & getrecommendations! Published in 2020 at "Faraday discussions"
DOI: 10.1039/d0fd90023k
Abstract: Jan Gerit Brandenburg, Kieron Burke, Antonio Cancio, Jannis Erhard, Emmanuel Fromager, Abhisek Ghosal, Nikitas Gidopoulos, Paola GoriGiorgi, Trygve Helgaker, Ben Hourahine, Christoph R. Jacob, Derk Kooi, Neepa Maitra, Manasi R. Mulay, Katarzyna Pernal, Aurora Pribram-Jones,… read more here.
Keywords: general discussion; density functional; new density; functional approximations ... See more keywords
Numerical relativity simulation of GW150914 beyond general relativity
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review D"
DOI: 10.1103/physrevd.101.104016
Abstract: We produce the first astrophysically relevant numerical binary black hole gravitational waveform in a higher-curvature theory of gravity beyond general relativity. We simulate a system with parameters consistent with GW150914, the first LIGO detection, in… read more here.
Keywords: gw150914; general relativity; relativity; relativity simulation ... See more keywords
Separate Universes beyond General Relativity
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review D"
DOI: 10.1103/physrevd.95.043529
Abstract: We establish purely geometric or metric-based criteria for the validity of the separate universe ansatz, under which the evolution of small-scale observables in a long-wavelength perturbation is indistinguishable from a separate Friedmann-Robertson-Walker cosmology in their… read more here.
Keywords: cosmology; separate universes; general relativity; perturbation ... See more keywords
Gravity beyond general relativity
Sign Up to like & getrecommendations! Published in 2018 at "International Journal of Modern Physics D"
DOI: 10.1142/s0218271818480012
Abstract: We introduce the standard model of cosmology based on general relativity and discuss its successes and problems. We then discuss motivations to consider gravitational theories beyond general relativity and summarize observational and theoretical constraints that… read more here.
Keywords: gravity beyond; relativity; cosmology; general relativity ... See more keywords