We theoretically study the creep of vortex matter in superconductors. The low
temperatures experimental phenomenology, previously interpreted in terms of
``quantum tunnelling'' of vortices, is reproduced by Monte Carlo simulations of
a purely ``classical'' vortex model. We demonstrate that a non-zero creep rate
in the limit of vanishing temperature is to be expected in systems with slow
relaxations as a consequence of their off-equilibrium evolution in a complex
free energy landscape.Comment: extended references, published versio
