Dependence of the damping rate γ/ω₀ (where ω₀ can be either ω₊ or ω₋) on the separation between the loops. a) Equal loop densities ζ_L = ζ_R = 3. b) Unequal loop densities ζ_L = 2.5, ζ_R = 2.9. The damping rate corresponding to ω₋ is shown as full lines, while the damping rate corresponding to ω₊ is shown as thick dashed lines. The damping rates for the kink oscillations of the individual loops (thin dashed and dotted lines) are also shown.