As I understand, the Wilson line is the operator $W(x) = P\exp(i\int_{xi}^{xf} A.dx)$, where $P$ is path ordering. The Polyakov loop $P(x)$ on the other hand is the trace of the Wilson loop $W(x)$ along the time axis, i.e. = $Tr[T\exp(i\int_0^t A.dt)]$, where $T$ is time ordering.
Now, my question is: is there any relation between the Polyakov loop correlator $\langle P(0)P(d)\rangle$ and the Wilson loop around the closed rectangular curve of length $d$ along the spatial direction, and length $t$ along time axis?
