D0-branes in SO(32)$\times$SO(32) open type 0 string theory

TL;DR

This paper constructs D0-branes in SO(32)×SO(32) open type 0 string theory, supporting the conjecture of S-duality with bosonic string theory on the SO(32) lattice through spectrum analysis.

Contribution

It introduces a method to construct D0-branes in SO(32)×SO(32) open type 0 string theory and clarifies the spectrum truncation consistent with S-duality.

Findings

Constructed D0-branes in the theory.

Supported the S-duality conjecture.

Identified spectrum truncation consistent with duality.

Abstract

We construct D0-branes in SO(32)$\times$SO(32) open type 0 string theory using the same method as the one used to construct non-BPS D0-brane in type I string theory. It has been proposed that this theory is S-dual to bosonic string theory compactified on SO(32) lattice, which has SO(32)$\times$SO(32) spinor states as excited states of fundamental string. One of these states seems to correspond to the D0-brane, and by the requirement that other states which do not have corresponding states must be removed, we can determine the way of truncation of the spectrum. This result supports the conjecture.