Holographic Lattices


Santos, J. (2012). Holographic Lattices. Perimeter Institute. https://pirsa.org/12050032


Santos, Jorge. Holographic Lattices. Perimeter Institute, May. 29, 2012, https://pirsa.org/12050032


          @misc{ pirsa_PIRSA:12050032,
            doi = {10.48660/12050032},
            url = {https://pirsa.org/12050032},
            author = {Santos, Jorge},
            keywords = {Quantum Fields and Strings},
            language = {en},
            title = {Holographic Lattices},
            publisher = {Perimeter Institute},
            year = {2012},
            month = {may},
            note = {PIRSA:12050032 see, \url{https://pirsa.org}}

Jorge Santos University of California, Santa Barbara


We add a gravitational background lattice to the simplest holographic model of matter at finite density and calculate the optical conductivity. With the lattice, the zero frequency delta function found in previous calculations (resulting from translation invariance) is broadened and the DC conductivity is finite. The optical conductivity exhibits a Drude peak with a cross-over to power-law behavior at higher frequencies. Surprisingly, these results bear a strong resemblance to the properties of some of the cuprates.