Probing modified gravity theories with multiple measurements of high-redshift quasars

ABSTRACT In this paper, we quantify the ability of multiple measurements high-redshift quasars to constrain several theories modified gravity, including Dvali–Gabadadze–Porrati braneworld scenario, generalized Chaplygin gas, f(T) and polytropic Cardassian model. Recently released sample 1598 with X-ray ultraviolet flux in redshift range 0.036 ? z 5.1003, as well a compilation 120 intermediate-luminosity radio covering 0.46 < 2.76 are respectively used standard probes at higher redshifts. For all considered gravity theories, our results show that there is still some possibility ? cold dark matter (?CDM) scenario might not be best cosmological model preferred by current quasar observations. order improve constraints, data also combined latest observations baryon acoustic oscillations, which strongly complement constraints. Finally, discuss support given applying different information theoretic techniques like Akaike criterion, Bayesian Jensen–Shannon divergence.