After a brief introduction to the IceCube detector and its current
status, the talk will focus on the potential that this multi-purpose
experiment has in the energy region of a few GeV to about a TeV. In
particular we will discuss a neutrino oscillation analysis with the goal
to measure muon neutrino disappearance as a function of energy for a
constant baseline length of the diameter of the Earth by studying
vertically up-going muon neutrinos. At this baseline disappearance
effects are expected to become sizable at neutrino energies below 100GeV.
The talk will further explore the physics potentials for oscillation
analyses as well as indirect searches for Dark Matter with a particular
focus on Deep Core low energy extension, a new 15MT subdetector that
will be located at the center of IceCube.
