Charge transport in holography with momentum dissipation

A bstract In this work, we examine how charge is transported in a theory where momentum is relaxed by spatially dependent, massless scalars. We analyze the possible IR phases in terms of various scaling exponents and the (ir)relevance of operators in the IR effective holographic theory with a dilato...

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Bibliographic Details
Published in:	The journal of high energy physics 2014-04, Vol.2014 (4), p.1-31, Article 181
Main Author:	Gouteraux, B
Format:	Article
Language:	eng
Subjects:	AdS-CFT Correspondence Charge Classical and Quantum Gravitation Dilatons Disorders Dissipation Elementary Particles Encounters Gauge-gravity correspondence Holography and condensed matter physics (AdS/CMT) Infrared radiation Insulators Low frequencies Physics Physics and Astronomy Quantum Field Theories Quantum Field Theory Quantum Physics Relativity Theory String Theory
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Summary:	A bstract In this work, we examine how charge is transported in a theory where momentum is relaxed by spatially dependent, massless scalars. We analyze the possible IR phases in terms of various scaling exponents and the (ir)relevance of operators in the IR effective holographic theory with a dilaton. We compute the (finite) resistivity and encounter broad families of (in)coherent metals and insulators, characterized by universal scaling behaviour. The optical conductivity at zero temperature and low frequencies exhibits power tails which can violate scaling symmetries, due to the running of the dilaton. At low temperatures, our model captures features of random-field disorder.
ISSN:	1029-8479 1126-6708 1029-8479