ABSTRACT
Slow relaxation and aging are ubiquitous in the low-temperature behavior of complex systems, notably structural and spin glasses [1-3]. The challenge for nonequilibrium statistical mechanics is to formulate a theory for these phenomena. In such a context, domain growth is of particular importance as a paradigm where the mechanisms
leading to slow relaxation and aging are believed to bewell understood. In this chapter, we will review our understanding of aging in domain growth problems.
