  The pulsar light curves and energy spectra are explored in dissipative pulsar
magnetospheres with the Aristotelian electrodynamics (AE), where particle
acceleration is fullly balanced with radiation reaction. The AE magnetospheres
with non-zero pair multiplicity are computed by a pseudo-spectral method in the
co-moving frame. The dissipative region near the current sheet outside the LC
is accurately captured by the high-resolution simulation. The pulsar light
curves and spectra are computed by the test particle trajectory method
including the influence of both the consistent accelerating electric field and
radiation reaction. Our results can generally reproduce the double-peak light
curves and the GeV cut-off energy spectra in agreement with the Fermi
observations for the pair multiplicity $\kappa\gtrsim1$.
