Multibrane solutions in cubic superstring field theory

TL;DR

This paper constructs and analyzes a class of analytic solutions in cubic superstring field theory, demonstrating that their energy can be expressed as a contour integral and can correspond to multiple D-branes.

Contribution

It introduces a new class of solutions depending on a single function in superstring field theory and computes their energy explicitly.

Findings

Energy expressed as a contour integral

Solutions can represent multiple D-branes

Explicit connection between function choice and brane number

Abstract

Using the elements of the so-called $KBc\gamma$ subalgebra, we study a class of analytic solutions depending on a single function $F(K)$ in the modified cubic superstring field theory. We compute the energy associated to these solutions and show that the result can be expressed in terms of a contour integral. For a particular choice of the function $F(K)$, we show that the energy is given by integer multiples of a single D-brane tension.