  The Symmetric Exclusion Process (SEP), where particles hop on a 1D lattice
with the restriction that there can only be one particle per site, is a
paradigmatic model of interacting particle systems. Recently, it has been shown
that the nature of the initial conditions - annealed or quenched - has a
quantitative impact on the long-time properties of tracer diffusion. However,
so far, all the studies in the quenched case focused on the low-density limit
of the SEP. Here, we derive the cumulant generating function of the tracer
position in the dense limit with quenched initial conditions. Importantly, our
approach also allows us to consider the nonequilibrium situations of (i) a
biased tracer in the SEP and (ii) a symmetric tracer in a step of density. In
the former situation, we show that the initial conditions have a striking
impact, and change the very dependence of the cumulants on the bias.
