Superparticle actions from superfields

TL;DR

This paper derives gauge-invariant superparticle actions from superfield equations, covering massive and massless cases in four dimensions, and relates complex actions to real constrained actions via BRST quantization.

Contribution

It introduces a systematic derivation of superparticle actions from superfield equations, including new real actions with second class constraints.

Findings

Derived gauge-invariant superparticle actions from superfield equations.

Connected complex actions to real actions using generalized BRST quantization.

Handled both massive and massless superparticles in four dimensions, with and without external fields.

Abstract

Gauge invariant complex covariant actions for superparticles are derived from the field equations for the chiral superfields in a precise manner. The massive and massless cases in four dimensions are treated both free and in interaction with an external super Maxwell field. By means of a generalized BRST quantization these complex actions are related to real actions with second class constraints which are new in some cases.