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Large rank Wilson loops in N=2 superconformal QCD at strong coupling / Benedict Fraser, Prem Kumar

Journal of High Energy Physics, Volume: 2012, Issue: 3

Swansea University Author: Prem Kumar

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Abstract

We compute the expectation values of circular Wilson loops in large representations at strong coupling, in the large-N limit of the N=2 superconformal theory with SU(N) gauge group and 2N hypermultiplets. Employing Pestun's matrix integral, we focus attention on symmetric and antisymmetric repr...

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Published in: Journal of High Energy Physics
ISSN: 1029-8479
Published: Springer 2012
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa8040
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Abstract: We compute the expectation values of circular Wilson loops in large representations at strong coupling, in the large-N limit of the N=2 superconformal theory with SU(N) gauge group and 2N hypermultiplets. Employing Pestun's matrix integral, we focus attention on symmetric and antisymmetric representations with ranks of order N. We find that large rank antisymmetric loops are independent of the coupling at strong 't Hooft coupling while symmetric Wilson loops grow exponentially with it. Symmetric loops display a non-analyticity as a function of the rank, characterized by the splitting of a single matrix model eigenvalue from the continuum, bearing close resemblance to Bose-Einstein condensation in an ideal gas. We discuss implications of these for a putative large-N string dual. The method of calculation we adopt makes explicit the connection to Fermi and Bose gas descriptions and also suggests a tantalizing connection of the above system to a multichannel Kondo model.
Item Description: Accepted in Journal of High Energy Physics
College: College of Science
Issue: 3