I-Brane Inflow and Anomalous Couplings on D-Branes

TL;DR

This paper demonstrates how anomaly inflow arguments can derive the anomalous couplings of D-brane gauge and gravitational fields to Ramond-Ramond potentials, clarifying the gravitational coupling structure.

Contribution

It introduces a straightforward anomaly inflow method to determine D-brane couplings, including the eight-form gravitational coupling, advancing understanding of D-brane interactions.

Findings

Derived anomalous couplings using anomaly inflow

Determined the eight-form gravitational coupling

Provided a simple method for analyzing D-brane couplings

Abstract

We show that the anomalous couplings of $D$-brane gauge and gravitational fields to Ramond-Ramond tensor potentials can be deduced by a simple anomaly inflow argument applied to intersecting $D$-branes and use this to determine the eight-form gravitational coupling.