  Global particle simulations of the lower hybrid waves have been carried out
using fully kinetic ions and drift kinetic electrons with a realistic
electron-to-ion mass ratio. The lower hybrid wave frequency, mode structure,
and electron Landau damping from the electrostatic simulations agree very well
with the analytic theory. Linear simulation of the propagation of a lower
hybrid wave-packet in the toroidal geometry shows that the wave propagates
faster in the high field side than the low field side, in agreement with a ray
tracing calculation. Electromagnetic benchmarks of lower hybrid wave dispersion
relation are also carried out. Electromagnetic mode conversion are observed in
toroidal geometry, slow waves are launched at the plasma boundary and converts
to fast waves at the mode conversion layer, which is consistent with linear
theory.
