Towards the correct prescription of van Dam-Veltman-Zakharov discontinuity in Seigal-Zweibach action from String theory in Fierz-Pauli Gauge

In the present work we will give an explicit solution the problem of divergence of propgator of gauge-invariant Siegel-Zwiebach (SZ) action in Fierz-Pauli (FP) gauge (also called van Dam-Veltman-Zakharov discontinuity) by connecting it's Green's functions to that of Transverse-Traceless (TT) gauge using improved finite-field-dependent BRST (FFBRST) method.
Comment: 13 Pages