title: End of aging in a complex system.
abstract: Aging phenomena in complex systems have been used as an important tool to investigate the physics of complexity. In particular, aging effects in spin glasses, measured using the thermoremanent magnetization decays, have been instrumental as a probe of complex equilibrium and nonequilibrium dynamics. In this Letter, we show that aging found in spin glass materials has a finite lifetime. After the aging part of the decay has ended, we find a post-aging decay which is apparently logarithmic in nature. This decay is independent of the waiting time and part of the same mechanism that produces aging.
authors.affiliation: Department of Physics, Indiana University of Pennsylvania, Indiana, PA 15705-1098, USA.
authors.forename: G G
authors.initials: GG
authors.lastname: Kenning
authors.forename: G F
authors.initials: GF
authors.lastname: Rodriguez
authors.forename: R
authors.initials: R
authors.lastname: Orbach