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On the asymptotic states and the quantum S matrix of the η-deformed AdS5×S5 superstring
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Theoretical Physics.
2015 (English)In: Journal of High Energy Physics (JHEP), ISSN 1029-8479, E-ISSN 1126-6708, Vol. 168Article in journal (Refereed) Published
Abstract [en]

We investigate the worldsheet S matrix of string theory in η-deformed AdS5×S5. By computing the six-point tree-level S matrix we explicitly show that there is no particle production at this level, as required by the classical integrability of the theory. At one and two loops we show that integrability requires that the classical two-particle states be redefined in a non-local and η-dependent way. This is a significant departure from the undeformed theory which is probably related to the quantum group symmetry of the worldsheet theory. We use generalized unitarity to carry out the loop calculations and identify a set of integrals that allow us to give a two-loop Feynman integral representation of the logarithmic terms of the two-loop S matrix. We finally also discuss aspects of the calculation of the two-loop rational terms.

Place, publisher, year, edition, pages
2015. Vol. 168
National Category
Subatomic Physics
Research subject
Theoretical Physics
URN: urn:nbn:se:uu:diva-252094DOI: 10.1007/JHEP03(2015)168ISI: 000352275400001OAI: diva2:808881
Available from: 2015-04-29 Created: 2015-04-29 Last updated: 2015-05-04Bibliographically approved

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Engelund, Oluf
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