Towards strange metallic holography
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Publication:367673
DOI10.1007/JHEP04(2010)120zbMATH Open1272.83098arXiv0912.1061WikidataQ59254727 ScholiaQ59254727MaRDI QIDQ367673
Author name not available (Why is that?)
Publication date: 16 September 2013
Published in: (Search for Journal in Brave)
Abstract: We initiate a holographic model building approach to `strange metallic' phenomenology. Our model couples a neutral Lifshitz-invariant quantum critical theory, dual to a bulk gravitational background, to a finite density of gapped probe charge carriers, dually described by D-branes. In the physical regime of temperature much lower than the charge density and gap, we exhibit anomalous scalings of the temperature and frequency dependent conductivity. Choosing the dynamical critical exponent appropriately we can match the non-Fermi liquid scalings, such as linear resistivity, observed in strange metal regimes. As part of our investigation we outline three distinct string theory realizations of Lifshitz geometries: from F theory, from polarised branes, and from a gravitating charged Fermi gas. We also identify general features of renormalisation group flow in Lifshitz theories, such as the appearance of relevant charge-charge interactions when . We outline a program to extend this model building approach to other anomalous observables of interest such as the Hall conductivity.
Full work available at URL: https://arxiv.org/abs/0912.1061
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