摘要：We derive the complete set of off-shell nilpotent and absolutely anticommuting
Becchi-Rouet-Stora-Tyutin (BRST), anti-BRST, and (anti-)co-BRST symmetry transformations for
all the fields of the modified version of two -dimensional (2D)
Proca theory by exploiting the “augmented” superfield formalism where the (dual-)horizontality
conditions and (dual-)gauge invariant restrictions are exploited together. We capture the (anti-)BRST and (anti-)co-BRST invariance
of the Lagrangian density in the language of superfield approach. We also express the nilpotency
and absolute anticommutativity of the (anti-)BRST and (anti-)co-BRST
charges within the framework of augmented superfield formalism. This exercise leads to some novel observations which have, hitherto, not been pointed out in the literature within the framework of
superfield approach to BRST formalism. For the sake of completeness, we also mention, very briefly,
a unique bosonic symmetry, the ghost-scale symmetry, and discrete symmetries of the theory and show
that the algebra of conserved charges provides a physical
realization of the Hodge algebra (satisfied by the de Rham cohomological operators of differential geometry).
