Dependence of the modulation phase Φ_gl on input physics as a function of Δν. The relative difference ΔΦ_gl = Φ_gl, mod − Φ_gl, ref, where Φ_gl, ref and Φ_gl, mod are the modulation phases found in the reference and modified models, is shown for 0.5 μHz wide Δν bins between 0.1 μHz and 4.0 μHz (except for the first Δν bin that is [0.1, 0.5] μHz). The reference model is defined with 1.75 M_⊙ and solar metallicity, and the input physics are those indicated in Table 1. The settings of the modified models are similar to those of the reference models, except for one parameter, which is changed as indicated on the labels. (a) and (b) are obtained on the RGB and clump stage plus AGB, respectively.