Superstring dualities and p-brane bound states

TL;DR

This paper demonstrates that superstring dualities and diffeomorphism invariance necessitate specific p-brane bound states in IIA and IIB superstring theories, supported by supergravity solutions.

Contribution

It establishes the requirement of p-brane bound states in superstring theories due to dualities and invariance, and confirms their existence through supergravity solutions.

Findings

Presence of p-brane bound states in IIA and IIB theories.

Supergravity solutions corresponding to these bound states.

Consistency with superstring dualities and invariance.

Abstract

We show that the M-theory/IIA and IIA/IIB superstring dualities together with the diffeomorphism invariance of the underlying theories require the presence of certain p-brane bound states in IIA and IIB superstring theories preserving 1/2 of the spacetime supersymmetry. We then confirm the existence of IIA and IIB supergravity solutions having the appropriate p-brane bound states interpretation.