String theory in AdS_3 x S^3 x T^4 with mixed flux: semiclassical and 1-loop phase in the S-matrix

Abstract

We present a semiclassical derivation of the tree-level and 1-loop dressing phases in the massive sector of string theory on AdS_3 x S^3 x T^4 supplemented by R-R and NS-NS 3-form fluxes. In analogy with the AdS_5 x S^5 case, we use the dressing method to obtain scattering solutions for dyonic giant magnons which allows us to determine the semiclassical bound-state S-matrix and its 1-loop correction. We also find that the 1-loop correction to the dyonic giant magnon energy vanishes. Looking at the relation between the bound-state picture and elementary magnons in terms of the fusion procedure we deduce the elementary dressing phases. In both the semiclassical and 1-loop cases we find agreement with recent proposals from finite-gap equations and unitarity cut methods. Further, we find consistency with the finite-gap picture by determining the resolvent for the dyonic giant magnon from the semiclassical bosonic scattering data.

arXiv comment28 pages. v2: references added, v3: extended introduction

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Cited by in corpus (6)

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• New Dressing Factors for AdS3/CFT2
• Elliptic solutions in the Neumann-Rosochatius system with mixed flux
• Minimal surfaces with mixed three-form flux
• Fermion zero modes for the mixed-flux AdS${}_3$ giant magnon
• Semiclassical quantization of the mixed-flux AdS${}_3$ giant magnon