  Color coherence effects play a crucial role in the description of jet
evolution at collider experiments. It is well known that the stimulated gluon
emission suffered by energetic jets traversing deconfined QCD matter is also
affected by color coherence effects. Through multiple soft scatterings with the
medium constituents, an antenna will lose its color correlation, causing its
legs to behave as independent emitters after the so-called decoherence time. In
this work we provide the first computation of the properties of the recoils
produced as a result of these soft scatterings between a color coherent dipole
and the medium constituents. Our findings reveal that the angular phase-space
of these soft recoils is strongly restricted by the opening angle of the dipole
itself due to quantum interference effects. In this long wavelength limit, one
can effectively consider that interactions take place with each of the legs of
the dipole separately, provided that the angular constraints dictated by the
corresponding color flow topologies are respected. This is in complete analogy
with the case of soft gluon emission in vacuum, where the recoil quark plays
the role of the emitted gluon. As a direct phenomenological application we
estimate the collisional energy loss rate of a color antenna. Importantly,
these results indicate the way in which color coherence effects can be
implemented in jet quenching models that account for the recoils from elastic
scatterings, improving in this way our description of medium response physics
in heavy-ion collisions.
