\[U\left(-\tfrac{1}{2}\mu^{2},\mu t\sqrt{2}\right)\sim\frac{2g(\mu)}{(1-t^{2})^{%
\frac{1}{4}}}\*\left(\cos\kappa\sum_{s=0}^{\infty}(-1)^{s}\frac{\widetilde{%
\cal{A}}_{2s}(t)}{\mu^{4s}}-\sin\kappa\sum_{s=0}^{\infty}(-1)^{s}\frac{%
\widetilde{\cal{A}}_{2s+1}(t)}{\mu^{4s+2}}\right),\]