  In this work, we report analytical results on transverse domain wall (TDW)
statics and field-driven dynamics in quasi one-dimensional biaxial nanowires
under arbitrary uniform transverse magnetic fields (TMFs) based on the
Landau-Lifshitz-Gilbert equation. Without axial driving fields, the static TDW
should be symmetric about its center meanwhile twisted in its azimuthal angle
distribution. By decoupling of polar and azimuthal degrees of freedom, an
approximate solution is provided which reproduces these features to a great
extent. When an axial driving field is applied, the dynamical behavior of a TDW
is viewed as the response of its static profile to external excitations. By
means of the asymptotic expansion method, the TDW velocity in traveling-wave
mode is obtained, which provides the extent and boundary of the
"velocity-enhancement" effect of TMFs to TDWs in biaxial nanowires. Finally
numerical simulations are performed and strongly support our analytics.
