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Wilson loops from multicentre and rotating branes, mass gaps and phase structure in gauge theories

Brandhuber, A and Sfetsos, K (1999) Wilson loops from multicentre and rotating branes, mass gaps and phase structure in gauge theories Adv.Theor.Math.Phys., 3. pp. 851-887.

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Abstract

Within the AdS/CFT correspondence we use multicentre D3-brane metrics to investigate Wilson loops and compute the associated heavy quark-antiquark potentials for the strongly coupled SU(N) super-Yang-Mills gauge theory, when the gauge symmetry is broken by the expectation values of the scalar fields. For the case of a uniform distribution of D3-branes over a disc, we find that there exists a maximum separation beyond which there is no force between the quark and the antiquark, i.e. the screening is complete. We associate this phenomenon with the possible existence of a mass gap in the strongly coupled gauge theory. In the finite-temperature case, when the corresponding supergravity solution is a rotating D3-brane solution, there is a class of potentials interpolating between a Coulombic and a confining behaviour. However, above a certain critical value of the mass parameter, the potentials exhibit a behaviour characteristic of statistical systems undergoing phase transitions. The physical path preserves the concavity property of the potential and minimizes the energy. Using the same rotating-brane solutions, we also compute spatial Wilson loops, associated with the quark-antiquark potential in models of three-dimensional gauge theories at zero temperature, with similar results.

Item Type: Article
Authors :
NameEmailORCID
Brandhuber, AUNSPECIFIEDUNSPECIFIED
Sfetsos, Kk.sfetsos@surrey.ac.ukUNSPECIFIED
Date : 25 June 1999
Uncontrolled Keywords : hep-th, hep-th
Related URLs :
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 12:27
Last Modified : 17 May 2017 12:27
URI: http://epubs.surrey.ac.uk/id/eprint/835410

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