Higgs-Dilaton inflation in Einstein-Cartan gravity

We study the phenomenology of Higgs-Dilaton model in context Einstein-Cartan gravity, focusing on separate impact Holst and Nieh-Yan terms inflationary observables. Using analytical numerical techniques, we show predictions these scenarios to display an attractor-like behaviour intrinsically related curvature field-space manifold metric formulation theory. Beyond that, analysis case reveals existence additional attractor solution induced by a cubic pole inflaton kinetic term that becomes relevant at large dilaton couplings. This constitutes unique feature as compared Palatini counterparts.