Circum-nuclear molecular disks: role in AGN fueling and feedback
  Gas inflows fueling AGN are now traceable at high-resolution with ALMA and
NOEMA. Dynamical mechanisms are essential to exchange angular momentum and
drive the gas to the super-massive black hole. While at 100pc scale, the gas is
sometimes stalled in nuclear rings, recent observations reaching 10pc scale
(50mas), inside the sphere of influence of the black hole, may bring smoking
gun evidence of fueling, within a randomly oriented nuclear molecular disk. AGN
feedback is also observed, in the form of narrow and collimated molecular
outflows, which point towards the radio mode, or entrainment by a radio jet.
Precession has been observed in a molecular outflow, indicating the precession
of the radio jet. One of the best candidates for precession is the
Bardeen-Petterson effect at small scale, which exerts a torque on the accreting
material, and produces an extended disk warp.
  The misalignment between the inner and large-scale disk, enhances the
coupling of the AGN feedback, since the jet sweeps a large part of the
molecular disk.
