Giant Nernst effect in d-wave density waves

Recently we have shown that the d-wave density wave exhibits a large negative Nernst effect in the presence of a magnetic field perpendicular to the conducting plane. Such Nernst effects have been seen in pseudogap phase in high Tc cuprate superconductors LSCO,YBCO,Bi2212 [1] and more recently in the pseudogap phase in heavy fermion superconductor CeCoIn$_5$ [2]. In particular we can describe the field dependence of the Nernst coefficient of CeCoIn$_5$ very consistently in terms of d-wave density wave. We shall report our analysis of other properties of the pseudogap phase in high $T_c$ cuprates in terms of d-DW. [1] Y. Wan et al, Phys. Rev. Lett. 88,257003(2002) [2] R. Bel et al, Phys. Rev. Lett. 92,217002(2004)