Holographic Transport via Analytic and Numerical Techniques

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


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.

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© 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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