Remarks on the asymptotic behavior of the ’t Hooft’s magnetic monopole

Abstract
We investigate the asymptotic behavior of the ’t Hooft’s solution at r→0 and r→∞. Using the methods of the qualitative theory of ordinary differential systems, we are able to derive the asymptotic form of the solution up to a higher approximation than in ’t Hooft’s original paper [G. ’t Hooft, Nucl. Phys. B 79, 276 (1974], as well as show that the Prasad–Sommerfield’s exact solution can be considered as an analytical limit of the ’t Hooft’s solution for μ2→0, λ→0. Some remarks on the stability of the monopole close the paper.

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