  An understanding of high temperature superconductivity clearly requires the
nature of its normal state, however the normal state of the cuprates is poorly
understood. One possible explanation is the bipolaronic model where mobile,
heavily phonon-dressed holes (polarons) are paired in real space. The ground
state is made up of intersite singlet bipolarons where excitations can be made
to triplet bipolaron and polaron bands. Based on this model I derive the Nernst
coefficient and the Thermoelectric power for the cuprates. The Nernst
coefficient shows an interesting interference term due to the triplet and
singlet bipolaron and polaron current flow. The interference remains even when
the scattering rate is independent of energy.
