Finite size effects for giant magnons on physical strings

Details Finite size effects for giant magnons on physical strings Finite size effects for giant magnons on physical strings

2008-01-14

arxiv.org/abs/0801.2064v2

Nucl.Phys.B801:97-117,2008

Physics

High Energy Physics

High Energy Physics - Theory

24 pages, 7 figures; v2 typos fixed

Scientific paper

10.1016/j.nuclphysb.2008.04.018

Using finite gap methods, we find the leading order finite size corrections for an arbitrary number of giant magnons on physical strings, where the sum of the momenta is a multiple of 2\pi. Our results are valid for the Hofman-Maldacena fundamental giant magnons as well as their dyonic generalizations. The energy corrections turn out to be surprisingly simple, especially if all the magnons are fundamental, and at leading order are independent of the magnon flavors. We also show how to use the Bethe ansatz to find finite size corrections for dyonic giant magnons with large R-charges.

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