Flux creep and current relaxation in high-<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="italic">T</mml:mi></mml:mrow><mml:mrow><mml:mi mathvariant="italic">c</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math>superconductors

The long-time asymptotics of the current (magnetization) relaxation in high-temperature superconductors is studied within the framework of collective creep theory. The inverse normalized relaxation rate ${\mathit{S}}^{\mathrm{\ensuremath{-}}1}$ depends linearly on Tln(t/${\mathrm{\ensuremath{\tau}}}_{0}$). The attempt time ${\mathrm{\ensuremath{\tau}}}_{0}$ is shown to be much longer than a ``microscopic'' time scale and is strongly size and ${\mathit{j}}_{\mathit{c}}$ dependent.