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The quasi-normal modes of quantum criticality
William Witczak-Krempa, Subir Sachdev
We study charge transport of quantum critical points described by conformal field theories in 2+1 spacetime dimensions. The transport is described by an effective field theory on a…
Pyrochlore electrons under pressure, heat and field: shedding light on the iridates
William Witczak-Krempa, Ara Go, Yong Baek Kim
We study the finite temperature and magnetic field phase diagram of electrons on the pyrochlore lattice subject to a local repulsion as a model for the pyrochlore iridates. We prov…
Universal transport near a quantum critical Mott transition in two dimensions
William Witczak-Krempa, Pouyan Ghaemi, T. Senthil +1
We discuss the universal transport signatures near a zero-temperature continuous Mott transition between a Fermi liquid (FL) and a quantum spin liquid in two spatial dimensions. Th…
Correlation effects on 3D topological phases: from bulk to boundary
Ara Go, William Witczak-Krempa, Gun Sang Jeon +2
Topological phases of quantum matter defy characterization by conventional order parameters but can exhibit quantized electro-magnetic response and/or protected surface states. We…