Comparison between observed V-band light curve of RX J0513.9-6951 (panel a; Alcock et al. 1996) and that predicted from our WD accretion model (panel b) with an initial WD mass of M_WD = 1.3 M_⊙. Panel c: initial mass accretion rate (Ṁ_acc) adopted in our model. The positions marked by “A”, “B”, and “C”, respectively, correspond to the accretion rates of , , and . Panel d: time evolution of the WD photospheric radius in units of R_⊙ (solid line) and the surface effective temperature of the WD in units of eV (dotted line) in our model. Here, we used the apparent distance modulus of (m − M)_V = 18.7 (Hachisu & Kato 2003b) to calculate V-band magnitudes.