Sliver frame stubs in OSFT via auxiliary fields

TL;DR

This paper extends the auxiliary field method for constructing stubs in open string field theory to non-BPZ even sliver frames, demonstrating quantum consistency and applying it to specific solutions.

Contribution

It generalizes the auxiliary field approach to non-BPZ even sliver frames and proves quantum-level consistency for these constructions.

Findings

Method successfully applied to tachyon vacuum

Constructed stubs in non-BPZ even sliver frames

Confirmed quantum-level consistency

Abstract

In this short paper we want to generalize some recent concepts related to stubs in open string field theory. First, we modify the auxiliary field method by Erbin and Firat [#Erbin2023] to non-BPZ even sliver frame stubs. We then also show that the construction is consistent at the full quantum level without any additional assumptions. Finally, we apply the method explicitly to the tachyon vacuum and the simplest identity-like solution.