  We study the conformational dynamics within homo-polymer globules by
solvent-implicit Brownian dynamics simulations. A strong dependence of the
internal chain dynamics on the Lennard-Jones cohesion strength {\epsilon} and
the globule size NG is observed. We find two distinct dynamical regimes: a
liquid- like regime (for {\epsilon} < {\epsilon}s) with fast internal dynamics
and a solid-like regime (for {\epsilon} > {\epsilon}s) with slow internal
dynamics. The cohesion strength {\epsilon}s of this freezing transition depends
on NG. Equilibrium simulations, where we investigate the diffusional chain
dynamics within the globule, are compared with non-equilibrium simulations,
where we unfold the globule by pulling the chain ends with prescribed velocity
(encompassing low enough velocities so that the linear-response, viscous regime
is reached). From both simulation protocols we derive the internal viscosity
within the globule. In the liquid-like regime the internal friction increases
continuously with {\epsilon} and scales extensive in NG. This suggests an
internal friction scenario where the entire chain (or an extensive fraction
thereof) takes part in conformational reorganization of the globular structure.
