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Plasma photoemission from string theory

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Abstract

Leading ’t Hooft coupling corrections to the photoemission rate of the planar limit of a strongly-coupled \( \mathcal{N}=4 \) SYM plasma are investigated using the gauge/string duality. We consider the full \( \mathcal{O}\left( {{\alpha^{{\prime 3}}}} \right) \) type IIB string theory corrections to the supergravity action, including higher order terms with the Ramond-Ramond five-form field strength. We extend our previous results presented in [1]. Photoemission rates depend on the ’t Hooft coupling, and their curves suggest an interpolating behaviour from strong towards weak coupling regimes. Their slopes at zero light-like momentum give the electrical conductivity as a function of the ’t Hooft coupling, in full agreement with our previous results of [2]. Furthermore, we also study the effect of corrections beyond the large N limit.

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Authors and Affiliations

  1. The Rudolf Peierls Centre for Theoretical Physics, Department of Physics, University of Oxford, 1 Keble Road, Oxford, OX1 3NP, U.K.

    Babiker Hassanain

  2. IFLP-CCT-La Plata, CONICET and Departamento de Física, Universidad Nacional de La Plata, Calle 49 y 115, C.C. 67, (1900), La Plata, Buenos Aires, Argentina

    Martin Schvellinger

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ArXiv ePrint: 1209.0427

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Hassanain, B., Schvellinger, M. Plasma photoemission from string theory. J. High Energ. Phys. 2012, 95 (2012). https://doi.org/10.1007/JHEP12(2012)095

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