Interaction corrections to thermopower in the two-dimensional electron gas

We study how electron-electron interactions enhance or suppress the Seebeck coefficient in the disordered electron gas at low temperatures. We performed a detailed perturbative calculation of the heat density-density correlation function for short-range and long-range Columb interactions. For long-range interactions, we found logarithmic corrections from the sub-temperature intervals of energies in addition to Altshuler-Aronov corrections. In this poster presentation, I will discuss how these logarithmic corrections fit into the structure of the correlation function.