Speaker: T. Senthil, MIT Title: Algebraic charge liquids and the underdoped cuprates Abstract: We describe a possible theoretical route for the evolution with doping of an antiferromagnetic Mott insulator into a gapless d-wave superconductor. Central to the description are "algebraic charge liquids" with power law correlations of gapless, spinless, charge e fermions. Based on this understanding we propose a specific theory of the underdoped cuprates that naturally explains a number of puzzling phenomena including the doping and temperature dependence of the superfluid density, the photoemission spectra, and Shubnikov-de Haas oscillations. Experiments to test the theory are suggested.