Covariant Gauge Fixing for Super IIA D-branes

TL;DR

This paper develops a covariant gauge fixing method for super IIA D-branes, simplifying their effective action by removing non-linearities while maintaining kappa-symmetry, and explores the connection between different formulations.

Contribution

It introduces a covariant gauge fixing approach for super IIA D-branes that simplifies the effective action and clarifies the relation between different formulations.

Findings

Effective action with auxiliary scalar field constructed.

Covariant gauge fixing removes non-linear square root structure.

Connection between different effective actions discussed.

Abstract

For the kappa-symmetric super IIA D-brane action by the canonical approach we construct an equivalent effective action which is characterized by an auxiliary scalar field. By analyzing the canonical equations of motion for the kappa-symmetry-gauge-fixed action we find a suitable conformal-like covariant gauge fixing of reparametrization symmetry to obtain a simplified effective action where the non-linear square root structure is removed. We discuss how the two effective actions are connected.