Large-Spin and Large-Winding Expansions of Giant Magnons and Single Spikes

TL;DR

This paper extends the analysis of classical string solutions in AdS/CFT by deriving large-spin and large-winding expansions for giant magnons and single spikes, including exponential corrections and velocity-dependent regimes.

Contribution

It introduces a generalized method for large-spin and large-winding expansions of finite-size string solutions, expressing energies via Lambert's W-function and computing detailed exponential corrections.

Findings

Derived classical exponential corrections to dispersion relations.

Expressed energies in terms of Lambert's W-function.

Analyzed velocity regimes for giant magnons and single spikes.

Abstract

We generalize the method of our recent paper on the large-spin expansions of Gubser-Klebanov-Polyakov (GKP) strings to the large-spin and large-winding expansions of finite-size giant magnons and finite-size single spikes. By expressing the energies of long open strings in RxS2 in terms of Lambert's W-function, we compute the leading, subleading and next-to-subleading series of classical exponential corrections to the dispersion relations of Hofman-Maldacena giant magnons and infinite-winding single spikes. We also compute the corresponding expansions in the doubled regions of giant magnons and single spikes that are respectively obtained when their angular and linear velocities become smaller or greater than unity.