Imprint of Accretion Disk-Induced Migration on Gravitational Waves from
  Extreme Mass Ratio Inspirals
  We study the effects of a thin gaseous accretion disk on the inspiral of a
stellar--mass black hole into a supermassive black hole. We construct a
phenomenological angular momentum transport equation that reproduces known disk
effects. Disk torques modify the gravitational wave phase evolution to
detectable levels with LISA for reasonable disk parameters. The Fourier
transform of disk-modified waveforms acquires a correction with a different
frequency trend than post-Newtonian vacuum terms. Such inspirals could be used
to detect accretion disks with LISA and to probe their physical parameters.
