  Recent results applying resurgence theory to finite-temperature field
theories yield a detailed analytic structure determined by topological
excitations. We examine finite-temperature SU(N) lattice gauge theories in
light of these results. Double-trace Polyakov loop deformations move through
different regions of the confined phase characterized by continuous change in
the adjoint Polyakov loop. Lattice models show how the behavior of monopole
constituents of calorons can change in the different confining regions. We
conjecture that the pure SU(N) gauge theory is close to a special symmetric
point where monopole effects give rise to Casimir string-tension scaling.
