Lorentz boost
= Lorentz boost
{c}
{title2=$t'=\gamma(t-vx),\quad x'=\gamma(x-vt)$}
A Lorentz boost relates <inertial frames> moving at a constant relative velocity without an additional spatial rotation. In units with light speed one, the displayed transformation preserves $t^2-x^2$, with <Lorentz factor> $\gamma=(1-v^2)^{-1/2}$. Applying it to a static <classical field-theory soliton> produces a uniformly moving solution in a Lorentz-invariant theory.