The dynamics of Domain Wall Strings

Understand

We study the dynamics of domain wall solitons in $(2+1)d$ field theories.

• These objects are extended along one of the spatial directions, so they also behave as strings; hence the name of domain wall strings.
• We show analytically and numerically that the amount of radiation from the propagation of wiggles on these objects is negligible except for regions of high curvature.
• Therefore, at low curvatures, the domain wall strings behave exactly as the Nambu-Goto action predicts.