Title: Dynamical instability of the electric transport in strongly fluctuating superconductors,
Abstract: Theory of the influence of the thermal fluctuations on the electric transport
beyond linear response in superconductors is developed within the framework of
the time dependent Ginzburg - Landau approach. The I - V curve is calculated
using the dynamical self - consistent gaussian approximation. Under certain
conditions it exhibits a reentrant behaviour acquiring an S - shape form. The
unstable region below a critical temperature $T^{\ast }$ is determined for
arbitrary dimensionality ($D=1,2,3$) of the thermal fluctuations. The results
are applied to analyse the transport data on nanowires and several classes of
2D superconductors: metallic thin films, layered and atomically thick novel
materials.