$(p-1)$-Bracket for D$p$-branes in Large R-R Field Background

TL;DR

This paper introduces a ($p-1$)-bracket to describe volume-preserving diffeomorphisms in D$p$-brane theories with large R-R backgrounds, extending to non-Abelian gauge fields and deriving a general D$p$-brane action.

Contribution

It generalizes the ($p-1$)-bracket to non-Abelian gauge theories and derives a comprehensive D$p$-brane action for $p \,\leq\, 6$, linking symmetries with brane dynamics.

Findings

Defined the ($p-1$)-bracket for volume-preserving diffeomorphisms.

Extended the bracket to non-Abelian gauge fields.

Derived a general D$p$-brane action for $p\leq 6$.

Abstract

The volume-preserving diffeomorphism is a key feature that characterizes the large constant R-R ($p-1$)-form field background in a D$p$-brane theory. It represents a symmetry of the theory that preserves the volume of space. To describe this symmetry, we introduce the concept of the ($p-1$)-bracket, which generates the volume-preserving diffeomorphism. The ($p-1$)-bracket is a mathematical operation that acts on ($p-1$)-forms and encodes the transformation of the background field under the symmetry. To generalize the ($p-1$)-bracket, we can apply it to the non-Abelian one-form gauge field, which is relevant in gauge theories with non-Abelian gauge groups. This allows us to extend the concept of volume-preserving diffeomorphism and its associated symmetry to non-Abelian gauge theories. When considering D-branes and T-duality, we introduce the transverse coordinates of the branes. By incorporating T-duality and the generalized bracket, a general expression for the action in D$p$-branes can be derived when $p\le 6$. This result connects the existing construction of D$p$-branes with our generalized bracket, illustrating the relationship between the symmetry and its associated transformations and the dynamics of the branes. In addition, we can discuss the non-Abelianization of the ($p-2$)-form gauge potential. This process involves generalizing the concept of non-Abelian gauge fields to higher-form gauge potentials. By extending the Lagrangian description of a single D-brane to multiple D-branes, a similar Lagrangian description can be established for both cases, highlighting the common underlying structure and symmetry properties. Our developments demonstrate the interplay between symmetries, gauge fields, and D-brane dynamics, providing a deeper understanding of the underlying principles within D-branes.