Massive Dirac fermions from holography release_nr5bc7jqwzb7dkju6vuqby6wmu

by N.W.M. Plantz, F. García Flórez, H.T.C. Stoof

Released as a article .

2018  

Abstract

We provide a framework to compute the dynamics of massive Dirac fermions using holography. To this end we consider two bulk Dirac fermions that are coupled via a Yukawa interaction and propagate on a gravitational background in which a mass deformation is introduced. Moreover, we discuss the incorporation of this approach in semiholography. The resulting undoped fermionic spectral functions indeed show that the Yukawa coupling induces a gap in the holographic spectrum, whereas the semiholographic extension is in general gapped but additionally contains a quantum critical point at which the effective fermion mass vanishes and a topological phase transition occurs. Furthermore, when introducing doping, the fermionic spectral functions show a quantum phase transition between a gapped material and a Fermi liquid.
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Type  article
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Date   2018-02-12
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Language   en ?
arXiv  1802.04191v1
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