Probing anomalous top quark couplings at the future linear colliders

In terms of an effective Lagrangian we investigate the possibilities of probing anomalous top quark couplings, t (t) over barH, gammat (t) over bar, Zt (t) over bar and tWb at the future linear colliders. It is found that at a linear collider with a c. m. energy roots similar to 0.5 - 1.5 TeV and a high luminosity of 10 - 1000 fb(-1) e(+)e(-) --> t (t) over barH is an ideal process in probing anomalous t (t) over barH couplings. We also study in detail the effects of anomalous couplings on tf spin correlations in the top pair production as well as the top quark decay processes with three bases (helicity, beam line and off-diagonal bases). Our results show that with a c. m. energy roots similar to 0.5 - 1.5 TeV and a high luminosity of 10 - 1000 fb(-1), e(+)e(-) --> the anomalous couplings gammat (t) over bar, Zt (t) over bar and tWb may be sensitively probed.