The rare top quark decays t→ cV in the topcolor-assisted technicolor model

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We consider the rare top quark decays in the framework of topcolor-assisted technicolor (TC2) model. We find that the contributions of top-pions and top-Higgs predicted by the TC2 model can enhance the SM branching ratios by as much as 6-9 orders of magnitude. i.e., in the most case, the orders of magnitude of branching ratios are Br(t→ c g) 10⁻⁵, Br(t→ c Z) 10⁻⁵, Br(t→ c γ) 10⁻⁷. With the reasonable values of the parameters in TC2 model, such rare top quark decays may be testable in the future experiments. So, rare top quark decays provide us a unique way to test TC2 model.