%0 Journal Article %T The K-process on a tree as a scaling limit of the GREM-like trap model %+ Instituto de Matemática e Estatística (IME) %+ Institut de Mathématiques de Marseille (I2M) %A Fontes, L. R. G. %A Gava, R. J. %A Gayrard, V. %Z Published in at http://dx.doi.org/10.1214/13-AAP937 the Annals of Applied Probability (http://www.imstat.org/aap/) by the Institute of Mathematical Statistics (http://www.imstat.org) %< avec comité de lecture %@ 1050-5164 %J The Annals of Applied Probability %I Institute of Mathematical Statistics (IMS) %V 24 %N 2 %8 2014-04 %D 2014 %Z 1202.4104 %R 10.1214/13-AAP937 %Z Mathematics [math] %Z Physics [physics]/Mathematical Physics [math-ph]Journal articles %X We introduce trap models on a finite volume $k$-level tree as a class of Markov jump processes with state space the leaves of that tree. They serve to describe the GREM-like trap model of Sasaki and Nemoto. Under suitable conditions on the parameters of the trap model, we establish its infinite volume limit, given by what we call a $K$-process in an infinite $k$-level tree. From this we deduce that the $K$-process also is the scaling limit of the GREM-like trap model on extreme time scales under a fine tuning assumption on the volumes. %G English %L hal-01257154 %U https://hal.science/hal-01257154 %~ CNRS %~ UNIV-AMU %~ EC-MARSEILLE %~ INSMI %~ I2M %~ I2M-2014- %~ TDS-MACS