  It is now well-recognized that the Universe may behave like a condensed
matter system in which several phase transitions have taken place.
Superconductors and the superfluid phases of 3He are condensed matter systems
with useful similarities to the Universe: they both contain Bose fields (order
parameter) and Fermions (quasiparticles) which interact in a way similar to the
interaction of Higgs and gauge particles with fermions in particle physics.
This analogy allows us to simulate many properties of the cosmologically
relevant physical (particle physics) vacuum in condensed matter, while direct
experiments in particle physics are still far from realization. Recently, the
anomalous generation of momentum (called ``momentogenesis'') was experimentally
confirmed in 3He: in the non-trivial background of a moving 3He vortex, quantum
effects gave rise to the production of quasiparticles with momentum which were
detected by measuring the force on the vortex. This phenomenon is based on the
same physics as the anomalous generation of matter in particle physics and
bears directly on the cosmological problem of why the Universe contains much
more matter than antimatter (``baryogenesis''). Here we report the experimental
observation of the effect opposite to momentogenesis: the conversion of
quasiparticle momentum into a non-trivial order parameter configuration or
``texture''. The corresponding process in a cosmological setting would be the
creation of a primordial magnetic field due to changes in the matter content.
