On Modifications of the Sp(2) Covariant Superfield Quantization

TL;DR

This paper introduces a modified Sp(2) covariant superfield quantization scheme that aligns with the osp(1,2) formalism in the massless limit, enhancing compatibility with extended BRST symmetry.

Contribution

It presents a novel modification of the Sp(2) superfield quantization that preserves superalgebra compatibility without restricting superfield components.

Findings

Ensures compatibility of superalgebra with extended BRST symmetry.

Coincides with existing schemes in specific gauge-fixing cases.

Provides a unified formalism connecting Sp(2) and osp(1,2) approaches.

Abstract

We propose a modification of the Sp(2) covariant superfield quantization to realize a superalgebra of generating operators isomorphic to the massless limit of the corresponding superalgebra of the osp(1,2) covariant formalism. The modified scheme ensures the compatibility of the superalgebra of generating operators with extended BRST symmetry without imposing restrictions eliminating superfield components from the quantum action. The formalism coincides with the Sp(2) covariant superfield scheme and with the massless limit of the osp(1,2) covariant quantization in particular cases of gauge-fixing and solutions of the quantum master equations.