BPS States of Exceptional Non-Critical Strings

TL;DR

This paper investigates BPS states of non-critical strings from zero size instantons in exceptional groups, revealing novel phenomena like infinitely many light states and a nearly massless gravitino through dualities and mirror symmetry.

Contribution

It introduces a new analysis of BPS states in non-critical strings associated with exceptional groups using advanced duality and mirror symmetry techniques.

Findings

Discovery of infinitely many light states.

Identification of a nearly massless gravitino.

Evidence of novel physical phenomena in non-critical string contexts.

Abstract

We study the BPS states of non-critical strings which arise for zero size instantons of exceptional groups. This is accomplished by using F-theory and M-theory duals and by employing mirror symmetry to compute the degeneracy of membranes wrapped around 2-cycles of the Calabi-Yau threefold. We find evidence for a number of novel physical phenomena, including having infinitely many light states with the first lightest state including a nearly massless gravitino.