  We will study the competitive effect between the transport of a quantum dot
adsorbed to a ballistic channel and laterally coupled to a single-walled carbon
nanotube (SWNT). We will use the tight-binding approach to analytically write
the SWNT Green function and the quantum dot will be solved by the atomic method
for U very large. We will present curves of the electronic density of states
for some different sizes of nanotubes. The results for the conductance curves
will be presented as a function of Ef and for different values of n and hopping
between the nanotube and the quantum dot.
