Berciu Replies:

A Reply to the Comment by O. S. Barišić.

Figure 1

(a) Spectral weight $A(0,\omega )$ in 1D, for $t=1$, $\Omega =0.5t$, $\eta =0.01t$, and $\lambda =g^2/(2dt)=0.6$. The curves have been shifted for clarity. (b) Same as (a), for $\lambda =1.1$; (c),(d) are polaron ground-state energy and quasiparticle weight vs $\lambda$, respectively, for $t=1$, $\Omega =0.1t$. Quantum Monte Carlo simulations (QMC) results shown as circles are from Ref. 5.