On the Liouville 2D dilaton gravity models with sinh-Gordon matter
Sign Up to like & getrecommendations! Published in 2017 at "Journal of High Energy Physics"
DOI: 10.1007/jhep02(2018)088
Abstract: A bstractWe study 1 + 1 dimensional dilaton gravity models which take into account backreaction of the sinh-Gordon matter field. We found a wide class of exact solutions which generalizes black hole solutions of the… read more here.
Keywords: dilaton gravity; gravity models; gordon matter; gravity ... See more keywords
Motives and periods in Bianchi IX gravity models
Sign Up to like & getrecommendations! Published in 2017 at "Letters in Mathematical Physics"
DOI: 10.1007/s11005-018-1096-6
Abstract: We show that, when considering the anisotropic scaling factors and their derivatives as affine variables, the coefficients of the heat-kernel expansion of the Dirac–Laplacian on SU(2) Bianchi IX metrics are algebro-geometric periods of motives of… read more here.
Keywords: periods bianchi; gravity models; motives periods; bianchi gravity ... See more keywords
Gravity models as tool for basin boundary demarcation: A case study of Anambra Basin, Southeastern Nigeria
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Applied Geophysics"
DOI: 10.1016/j.jappgeo.2017.11.002
Abstract: Abstract This work analyzed gravity data over the Anambra Basin, Southeastern, Nigeria, with the aim of inferring the boundaries of the basin from gravity models. Method of study involved data acquisition and reduction, generation of… read more here.
Keywords: gravity models; anambra basin; basin southeastern; study ... See more keywords
Gravity Models of Interregional Migration in Indonesia
Sign Up to like & getrecommendations! Published in 2017 at "Bulletin of Indonesian Economic Studies"
DOI: 10.1080/00074918.2017.1298719
Abstract: This article explores the determinants of interregional migration in Indonesia. Employing basic and modified (extended) gravity models, and using data from the 2000 and 2010 Population Censuses and the 2005 Intercensal Population Survey, we test… read more here.
Keywords: interregional migration; migration; migration indonesia; gravity models ... See more keywords
Gravity models, PPML estimation and the bias of the robust standard errors
Sign Up to like & getrecommendations! Published in 2019 at "Applied Economics Letters"
DOI: 10.1080/13504851.2019.1581902
Abstract: ABSTRACT In gravity models with exporter and importer dummies, the robust standard errors of the slope parameters tend to be severely downward biased when estimated by PPML. The coverage rate of confidence intervals of the… read more here.
Keywords: ppml estimation; gravity models; standard errors; models ppml ... See more keywords
Smarr formula for BTZ black holes in general three-dimensional gravity models
Sign Up to like & getrecommendations! Published in 2017 at "Classical and Quantum Gravity"
DOI: 10.1088/1361-6382/aa552b
Abstract: Recent studies have presented the interpretation of thermodynamic enthalpy for the mass of BTZ black holes and the corresponding Smarr formula. All these are made in the background of three-dimensional (3D) general relativity. In this… read more here.
Keywords: three dimensional; black holes; gravity models; btz black ... See more keywords
On the viability of f(Q) gravity models
Sign Up to like & getrecommendations! Published in 2022 at "Classical and Quantum Gravity"
DOI: 10.1088/1361-6382/accef7
Abstract: In general relativity, the contracted Bianchi identity makes the field equation compatible with the energy conservation, likewise in f(R) theories of gravity. We show that this classical phenomenon is not guaranteed in the symmetric teleparallel… read more here.
Keywords: viability gravity; gravity; field equation; gravity models ... See more keywords
Galaxy rotation curves in modified gravity models
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2018/08/012
Abstract: In this work, we investigate the possibility that the galaxy rotation curves can be explained in the framework of modified gravity models that introduce a Yukawa term in the gravitational potential. We include dark matter… read more here.
Keywords: rotation curves; gravity models; modified gravity; galaxy rotation ... See more keywords
Constraints on extended gravity models through gravitational wave emission
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2021/03/014
Abstract: Using recent experimental results of detection of gravitational waves from the binary black hole signals by Advanced LIGO and Advanced Virgo, we investigate the propagation of gravitational waves in the context of fourth order gravity… read more here.
Keywords: models gravitational; gravitational waves; gravity models; constraints extended ... See more keywords
The galaxy–halo connection in modified gravity cosmologies: environment dependence of galaxy luminosity function
Sign Up to like & getrecommendations! Published in 2019 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stz1664
Abstract: We investigate the dependence of the galaxy–halo connection and galaxy density field in modified gravity models using the N-body simulations for f(R) and nDGP models at z = 0. Because of the screening mechanisms employed by… read more here.
Keywords: galaxy; gravity models; luminosity; halo connection ... See more keywords
Strong lensing constraints on modified gravity models
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review D"
DOI: 10.1103/physrevd.98.124027
Abstract: We impose the first strong-lensing constraints on a wide class of modified gravity models where an extra field that modifies gravity also couples to photons (either directly or indirectly through a coupling with baryons) and… read more here.
Keywords: constraints modified; strong lensing; gravity models; lensing constraints ... See more keywords