  Deflation is an efficient numerical technique for identifying new branches of
steady state solutions to nonlinear partial differential equations. Here, we
demonstrate how to extend deflation to discover new periodic orbits in
nonlinear dynamical lattices. We employ our extension to identify discrete
breathers, which are generic exponentially localized, time-periodic solutions
of such lattices. We compare different approaches to using deflation for
periodic orbits, including ones based on a Fourier decomposition of the
solution, as well as ones based on the solution's energy density profile. We
demonstrate the ability of the method to obtain a wide variety of multibreather
solutions without prior knowledge about their spatial profile.
