Abstract
We compute the central charge C T and universal conductivity C J of N F fermions coupled to a U (1) gauge field up to next-to-leading order in the 1/N F expansion. We discuss implications of these precision computations as a diagnostic for response and entanglement properties of interacting conformal field theories for strongly correlated condensed matter phases and conformal quantum electrodynamics in 2 + 1 dimensions.
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ArXiv ePrint: 1410.1902
http://users.physics.harvard.edu/∼pstrack (Philipp Strack).
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Huh, Y., Strack, P. Stress tensor and current correlators of interacting conformal field theories in 2+1 dimensions: fermionic Dirac matter coupled to U(1) gauge field. J. High Energ. Phys. 2015, 147 (2015). https://doi.org/10.1007/JHEP01(2015)147
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DOI: https://doi.org/10.1007/JHEP01(2015)147