  Using the phenomenological quantum friction models introduced by
Caldirola-Kanai, Kostin, and Albrecht, we study quantum tunneling of a
one-dimensional potential in the presence of energy dissipation. To this end,
we calculate the tunneling probability using a time-dependent wave packet
method. The friction reduces the tunneling probability. We show that the three
models provide similar penetrabilities to each other, among which the
Caldirola-Kanai model requires the least numerical effort. We also discuss the
effect of energy dissipation on quantum tunneling in terms of barrier
distributions.
