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The Liegh-Strassler deformation and the quest for integrability
KTH, School of Engineering Sciences (SCI), Theoretical Physics, Mathematical Physics.
2007 (English)In: Journal of High Energy Physics (JHEP), ISSN 1029-8479, E-ISSN 1126-6708Article in journal (Refereed) Published
Abstract [en]

In this paper we study the one-loop dilatation operator of the full scalar field sector of Leigh-Strassler deformed =4 SYM theory. In particular we map it onto a spin chain and find the parameter values for which the Reshetikhin integrability criteria are fulfilled. Some years ago Roiban found an integrable subsector, consisting of two holomorphic scalar fields, corresponding to the XXZ model. He was pondering about the existence of a subsector which would form generalisation of that model to an integrable q(3) model. Later Berenstein and Cherkis added one more holomorphic field and showed that the subsector obtained this way cannot be integrable except for the case when q = eiβ, β. In this work we show if we add an anti-holomorphic field to the two holomorphic ones, we get indeed an integrable q(3) subsector. We find it plausible that a direct generalisation to a q(2|3) one-loop sector will exist, and possibly beyond one-loop.

Place, publisher, year, edition, pages
Institute of Physics Publishing (IOPP), 2007.
National Category
Physical Sciences
URN: urn:nbn:se:kth:diva-66563DOI: 10.1088/1126-6708/2007/06/010OAI: diva2:484323
Qc 20120127Available from: 2012-01-27 Created: 2012-01-26 Last updated: 2012-01-27Bibliographically approved

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