Holographic models for undoped Weyl semimetals
Sep, 201264 pages
Published in:
- JHEP 04 (2013) 127
e-Print:
- 1209.2593 [hep-th]
Report number:
- ITP-UU-12-27,
- SPIN-12-25,
- CERN-PH-TH-2012-240
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Abstract: (Springer)
We continue our recently proposed holographic description of single-particle correlation functions for four-dimensional chiral fermions with Lifshitz scaling at zero chemical potential, paying particular attention to the dynamical exponent z = 2. We present new results for the spectral densities and dispersion relations at non-zero momenta and temperature. In contrast to the relativistic case with z = 1, we find the existence of a quantum phase transition from a non-Fermi liquid into a Fermi liquid in which two Fermi surfaces spontaneously form, even at zero chemical potential. Our findings show that the boundary system behaves like an undoped Weyl semimetal.Note:
- 64 pages, 19 figures
- Holography and condensed matter physics (AdS/CMT)
- AdS-CFT Correspondence
- holography
- scaling: Lifshitz
- density: spectral
- fermion: chiral
- correlation function
- dispersion relation
- critical phenomena
- Fermi surface
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