Abstract
The low energy vibrational dynamics of dry hen egg-white lysozyme has been investigated by the Terahertz Time-Domain Spectroscopy in the temperature range between 295 and 13 K. The low energy broad peak was clearly observed at about 0.65 THz and at 13 K in lysozyme. This broad peak is very similar to a boson peak, which has been observed in various kinds of glassy materials as the excess part of vibrational density of states.
