Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2012-02-27
Physics
High Energy Physics
High Energy Physics - Theory
11 pages, 4 figures; Contribution to the proceedings of the "XVII European Workshop on String Theory 2011", Padova, Italy, 5-9
Scientific paper
This is a short review of recent developments in the application of AdS/CFT methods to some condensed matter problems. In particular we present the holographic description of a local quantum critical state, related to (non)-Fermi liquids and the strange metal, that appears in large N CFTs with a gravity dual at finite density and zero temperature, and explore its properties by probing it with fermionic operators. Further we discuss possible bosonic and fermionic instabilities, leading to s-, p- or d-wave holographic superconductors and "electron stars". Finally we present a realization of local quantum criticality via an impurity problem.
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