Dynamical Polarization from Hidden Spin and Orbital Textures in p-Wave Magnets

Period-averaged descriptions often miss essential features of driven quantum matter. We show that the micromotion of an optically driven $p$-wave magnet unveils a hidden net spin polarization, absent from both the equilibrium and period-averaged spin textures, which remain odd in momentum. This spin polarization oscillates at the drive frequency and is resonantly enhanced at the interband gap set by nonrelativistic exchange splitting. The drive further activates an orbital angular momentum governed by interband quantum geometry. While its linear response remains momentum-odd, nonlinear rectification yields a static, momentum-even orbital polarization for suitably oriented driving fields. These results establish $p$-wave magnets as a source of resonant ac spin and rectified dc orbital polarization: effects invisible to any period-averaged treatment.