We investigate the cosmological observational test of extended quintessence model, i.e. a scalar-tensor gravity model with scalar field potential serving as dark energy, by using Planck 2018 cosmic microwave background (CMB) data, together baryon acoustic oscillations (BAO) and redshift-space distortion (RSD) data. As an example, we consider Brans-Dicke kinetic term $\frac{\omega(\phi)}{\phi} \...

this paper investigates the relationship between macroeconomic instability and private investment of the iranian economy. the study uses a trivariate var(2)-garch(1,1)-in-mean with diagonal bekk approach to proxied inflation and exchange rate uncertainties as the main indicators of macroeconomic instability. moreover, bounds testing approach to level relationship applied to investigate the long...