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Holographic Transport via Analytic and Numerical Techniques

  • Matteo BaggioliEmail author
Chapter
Part of the SpringerBriefs in Physics book series (SpringerBriefs in Physics)

Abstract

Let us insist on linear response theory and the definition of the Green’s function. Take a system and apply an external source to it, i.e \(\text {source}(\omega , k)\), which is frequency and momentum dependent. Read the response of the system: \(\text {response}(\omega , k)\). At leading order, the two are related by a linear map. Here, we introduce another very simple example: the electric conductivity. We apply an external electric field E, which will be our source, and we measure the produced electric current J, which is going to be our response.

Copyright information

© The Author(s), under exclusive license to Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Physics DepartmentIFT Instituto de Fisica Teorica MadridMadridSpain

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