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Conformal field theories at non-zero temperature: operator product expansions, Monte Carlo, and holography
Emanuel Katz, Subir Sachdev, Erik S. Sorensen +1
We compute the non-zero temperature conductivity of conserved flavor currents in conformal field theories (CFTs) in 2+1 spacetime dimensions. At frequencies much greater than the t…
Interacting Weyl semimetals: characterization via the topological Hamiltonian and its breakdown
William Witczak-Krempa, Michael Knap, Dmitry Abanin
Weyl semimetals (WSMs) constitute a 3D phase with linearly-dispersing Weyl excitations at low energy, which lead to unusual electrodynamic responses and open Fermi arcs on boundari…
Quantum critical charge response from higher derivatives: is more different?
William Witczak-Krempa
We present new possibilities for the charge response in the quantum critical regime in 2+1D using holography, and compare them with field theory and recent quantum Monte Carlo resu…