  In spinor Bose-Einstein condensates, spin-changing collisions are a
remarkable proxy to coherently realize macroscopic many-body quantum states.
These processes have been, e.g., exploited to generate entanglement, to study
dynamical quantum phase transitions, and proposed for realizing nematic phases
in atomic condensates. In the same systems dressed by Raman beams, the coupling
between spin and momentum induces a spin dependence in the scattering processes
taking place in the gas. Here we show that, at weak couplings, such modulation
of the collisions leads to an effective Hamiltonian which is equivalent to the
one of an artificial spinor gas with spin-changing collisions that are tunable
with the Raman intensity. By exploiting this dressed-basis description, we
propose a robust protocol to coherently drive the spin-orbit coupled condensate
into the ferromagnetic stripe phase via crossing a quantum phase transition of
the effective low-energy model in an excited-state.

Quantum Gases;Quantum Physics