Chirality Changing Phase Transitions in 4d String Vacua

TL;DR

This paper presents evidence that certain 4d N=1 string vacua with varying generations are interconnected via phase transitions involving fixed points in moduli space, with an M-theory perspective involving wrapped 5-branes.

Contribution

It demonstrates the existence of phase transitions connecting different string vacua with distinct generations through fixed points in moduli space.

Findings

Connected vacua with different generations via phase transitions.

Identified fixed points governing low energy theories.

M-theory description involves wrapped 5-branes at boundaries.

Abstract

We provide evidence that some four-dimensional N=1 string vacua with different numbers of generations are connected through phase transitions. The transitions involve going through a point in moduli space where there is a nontrivial fixed point governing the low energy field theory. In an M-theory description, the examples involve wrapped 5-branes leaving one of the ends of the world.