  Gamov-Teller transitions from the $^{14}$N ground state to the $^{14}$C
ground and excited states were investigated, based on the model of
antisymmetrized molecular dynamics. The calculated strengths for the allowed
transitions to the $0^+$, $1^+$, and $2^+$ states of $^{14}$C were compared
with the experimental data measured by high-resolution charge-exchange
reactions. The calculated GT transition to the $2^+_1$ state is strong while
those to the $0^+_{2,3}$ and $2^+_{2,3}$ states having dominant $2\hbar\omega$
excited configurations are relatively weak. The present calculation can not
describe the anonymously long life time of $^{14}$C, though the strength of the
$^{14}$C ground state is somewhat suppressed because of the cluster (many-body)
correlation in the ground states of $^{14}$C and $^{14}$N.
