  In this article the quantum fluctuation of a rigid and static string is
reported to be identical to a free quantum particle. Solutions similar to this
static string have already been found in the semi-classical quantizaton of
pulsating strings, and our results show that the semi-classical quantization of
pulsating strings is, in some cases, a perturbation of static strings. We also
interpret the energy of the static string as a lower bound for the pulsating
string and speculate about a description of quantum mechanics in terms of
semi-classical string theory.
